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249 verified UnitedHealthcare Gastroenterologists in Washington, DC
Zocdoc verifies all providers before they can appear in Zocdoc search results. Every provider that appears in search is open to new patients.
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Availability last updated 11/11/2026
Availability last updated 11/11/2026
Gastroenterologist
4.87
·435 reviews
Dr Lowe was professional, knowledgeable and overall great..!!!! - Apr 2, 2025 by milorad L.Click to read more
18 mi · 3405 Olandwood Ct, Ste 101-104, Olney, MD 20832
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait timeExpertise in upper gi endoscopy + 2 more
Next available: tomorrow
Physician Assistant (Gastroenterology)
4.95
·20 reviews
I would definitely recommend my PA MELISSA To a friend. She was very thorough and extremely helpful and nice! - Mar 20, 2026 by Gloria G.Click to read more
9 mi · 10301 Georgia Ave, Ste 208, Silver Spring, MD 20902
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Ms. Melissa Nickols is an experienced physician assistant who specializes in gastroenterology. She is based out of Maryland and offers in-person services at Gastro Center of MD in Silver Spring, Riverdale, and Gaithersburg. As part of her formal education, Ms. Nickols acquired a master's degree in ...Click to read more
Next available: Tue, Nov 24
Gastroenterologist
4.90
·554 reviews
Improvement needed on timeliness, though the Doctor apologized for the unforeseen delay in waiting.Click to read more
18 mi · 3405 Olandwood Ct, Ste 101-104, Olney, MD 20832
In-network · UnitedHealthcare
Accepting new patients · 18 years of experience · Highly recommended · Expertise in colonoscopy + 3 more ·
Read bio
Farzin Rashti, M.D., FACP is Board Certified in Gastroenterology & Hepatology and Internal Medicine and is dedicated to offering his patients superior personalized care in a respectful and supportive environment. Dr. Rashti works toward developing a partnership with his patients and forms a unique c...Click to read more
Next available: tomorrow
Gastroenterologist
4.84
·124 reviews
Great experience the doctor was very knowledgeable and friendly. - Oct 7, 2025 by Vecoya B.Click to read more
17 mi · 15225 Shady Grove Rd,, Ste 304, Rockville, MD 20850
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Expertise in acute gastrointestinal bleeding + 5 more ·
Read bio
Dr. Monica Passi is a distinguished gastroenterologist. She practices at the Gastro Center of MD and sees patients in Riverdale and Annapolis, MD.  Dr. Passi completed her medical degree from George Washington University and her internship in internal medicine at North Shore University Hospital. Sh...Click to read more
Next available: Mon, Nov 16
Gastroenterologist
5.00
·36 reviews
Very good. Doctor and everyone is was very polite and happy. Would recommend anyone to come here. by DEClick to read more
17 mi · 15225 Shady Grove Rd,, Ste 304, Rockville, MD 20850
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Dr. Raymond Richhart is a gastroenterologist who sees patients at Gastro Centers of America in Silver Spring, Rockville, and Riverdale, MD. He provides care for individuals seeking evaluation and support for digestive health concerns. Dr. Richhart earned his medical degree from the University of Vi...Click to read more
Next available: Mon, Nov 16
Gastroenterologist
4.90
·40 reviews
She was really attentive & listened to my issues. Hopefully everything goes well! Then I'll have an update. by FTClick to read more
17 mi · 15225 Shady Grove Rd,, Ste 304, Rockville, MD 20850
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Dr. Neha Rajpal is a gastroenterologist who sees patients in person at Gastro Centers of America in Silver Spring, Rockville, and Riverdale, MD. She provides care for individuals seeking evaluation and treatment of digestive health concerns. Dr. Rajpal completed her medical degree at Georgetown Uni...Click to read more
Next available: Tue, Nov 17
Gastroenterologist
4.93
·109 reviews
Dr. Talati was very kind, knowledgeable & very understanding. Thank you. by ABClick to read more
17 mi · 15225 Shady Grove Rd,, Ste 304, Rockville, MD 20850
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Dr. Rushi Talati is an experienced gastroenterologist at Gastro Center of MD in Riverdale, Gaithersburg, and Olney, MD. He also offers services to people with digestive conditions that affect their quality of life. Dr. Talati understands patients' conditions and prepares individualized treatment pl...Click to read more
Next available: Thu, Nov 19
Internist
5.00
·1 review
13 mi · 9401 Lee Hwy, Ste 302, Fairfax, VA 22031
In-network · UnitedHealthcare
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Dr. Simmi Singh, MD is an Internal Medicine physician dedicated to patient-centered, evidence-based primary care for adults. A native of the Washington, DC metropolitan area, Dr. Singh earned her medical degree from Howard University College of Medicine and a Master of Public Health from The George ...Click to read more
Next available: tomorrow
Gastroenterologist
4.66
·71 reviews
Dr. Byrne was very nice and did a good job communicating with me - Feb 4, 2026 by Matthew K.Click to read more
17 mi · 15225 Shady Grove Rd,, Ste 304, Rockville, MD 20850
In-network · UnitedHealthcare
Accepting new patients ·
Read bio
Dr. Robert Byrne is an experienced gastroenterologist who practices at the Gastro Center of MD. He offers services to people in Riverdale and Gaithersburg, MD. Dr. Byrne is committed to providing exceptional, patient-centered care for digestive and liver disorders. He listens to each patient and cr...Click to read more
Next available: Fri, Nov 20
Nurse Practitioner
10.5 mi · 8315 Lee Hwy, Ste 503, Fairfax, VA 22031
In-network · UnitedHealthcare
Also offers video visits · Accepting new patients ·
Read bio
Yuna is a board-certified Family Nurse Practitioner dedicated to delivering comprehensive, patient-centered primary care at Ace Primary Care in Fairfax, VA. She earned her Bachelor of Science in Nursing from the University of Oklahoma and her Master of Science in Nursing from Georgetown University....Click to read more
Next available: Tue, Nov 17
Gastroenterologist
4.82
·432 reviews
Dr Xu is excellent and very informative. He is extremely thorough and makes clear decisions on next steps. - Jun 30, 2023 by Michael O.Click to read more
18 mi · 3405 Olandwood Ct, Ste 101-104, Olney, MD 20832
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait timeExpertise in upper gi endoscopy + 4 more
Next available: Mon, Nov 16
Gastroenterologist
4.81
·309 reviews
Blew up phone with texts. Repeatedly for the same thing that had been completed on line. Stick with pen and paper - Jan 30, 2025Click to read more
18 mi · 3405 Olandwood Ct, Ste 101-104, Olney, MD 20832
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Expertise in colonoscopy + 3 more ·
Read bio
Dr. Pia Prakash completed her medical training in Washington, D.C. She received her Bachelor in Arts and Sciences from The George Washington University with a major in Psychology. She then attended the George Washington University School of Medicine where she received her medical degree and complete...Click to read more
Next available: Mon, Nov 16
Gastroenterologist
4.66
·71 reviews
Dr. Byrne was very nice and did a good job communicating with me - Feb 4, 2026 by Matthew K.Click to read more
18 mi · 3405 Olandwood Ct, Ste 101-104, Olney, MD 20832
In-network · UnitedHealthcare
Accepting new patients ·
Read bio
Dr. Robert Byrne is an experienced gastroenterologist who practices at the Gastro Center of MD. He offers services to people in Riverdale and Gaithersburg, MD. Dr. Byrne is committed to providing exceptional, patient-centered care for digestive and liver disorders. He listens to each patient and cr...Click to read more
Next available: Wed, Nov 18
Gastroenterologist
4.93
·109 reviews
Dr. Talati was very kind, knowledgeable & very understanding. Thank you. by ABClick to read more
18 mi · 3405 Olandwood Ct, Ste 101-104, Olney, MD 20832
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Dr. Rushi Talati is an experienced gastroenterologist at Gastro Center of MD in Riverdale, Gaithersburg, and Olney, MD. He also offers services to people with digestive conditions that affect their quality of life. Dr. Talati understands patients' conditions and prepares individualized treatment pl...Click to read more
Next available: Tue, Nov 24
Physician Assistant
5.00
·10 reviews
The team was very professional and friendly. I would recommend this team to a friend. I enjoyed the team listening and not rushing the appointment. I would go back and hopefully have a great experience as I did this first time.Click to read more
10.5 mi · 9500 Medical Center Dr, #105, Largo, MD 20774
In-network · UnitedHealthcare
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
I am a dedicated board-certified Physician Assistant specializing in primary care medicine at TRiiBE Medical LLC in Upper Marlboro, Maryland. With a strong commitment to providing quality healthcare for all individuals, I actively address health disparities within my local community. I earned my Bac...Click to read more
Next available: Mon, Dec 14
Gastroenterologist
4.88
·243 reviews
Great and exceptional service. Doctor Castillo is a great listener and he is caring. - Jan 10, 2022 by Franklyn I.Click to read more
18 mi · 3405 Olandwood Ct, Ste 101-104, Olney, MD 20832
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait time · Expertise in upper gi endoscopy + 2 more ·
Read bio
Serving the communities of Olney and Columbia, MD, Dr. Eduardo Castillo is an attending physician at Gastro Center of Maryland. An accomplished gastroenterologist, he looks forward to providing his patients with the proper tools and advice they need to improve or maintain their overall health. Dr...Click to read more
Next available: Tue, Dec 1
Gastroenterologist
4.70
·40 reviews
Great staff. The doctor was very communicative and listened to all my concerns. - Jan 27, 2026 by Carlos A.Click to read more
18 mi · 3405 Olandwood Ct, Ste 101-104, Olney, MD 20832
In-network · UnitedHealthcare
Accepting new patients ·
Read bio
Dr. Jennie Zhang is a distinguished gastroenterologist. She practices at the Gastro Center of MD, serving patients in Silver Spring, Riverdale, and Olney, MD. Dr. Zhang completed her medical degree at the West Virginia School of Osteopathic Medicine and her residency in internal medicine at the Uni...Click to read more
Next available: Wed, Dec 2
Gastroenterologist
4.87
·435 reviews
Dr Lowe was professional, knowledgeable and overall great..!!!! - Apr 2, 2025 by milorad L.Click to read more
20 mi · 501 N Frederick Ave, Ste 204, Gaithersburg, MD 20877
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait timeExpertise in upper gi endoscopy + 2 more
Next available: Mon, Nov 16
Nurse Practitioner
5.00
·3 reviews
She was awesome! Definitely will be back - Nov 4, 2026 by Jessica S.Click to read more
16.5 mi · 10110 Molecular Dr, Ste 209, Rockville, MD 20850
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Christina Sasselli, CRNP, is a board-certified Family Nurse Practitioner committed to delivering compassionate, holistic, and patient-centered care. She earned her Master of Science in Nursing (MSN) from Duquesne University in Pittsburgh and her Bachelor of Science in Nursing (BSN) from Chamberlain ...Click to read more
Next available: tomorrow
Family Nurse Practitioner
5.00
·7 reviews
I had such a great experience with Deidre Fisher! She is an incredible listener and makes you feel genuinely heard and comfortable throughout the entire appointment. She never makes you feel rushed and takes the time to explain everything thoroughly, making sure you understand what’s going on. I als...Click to read more
16.5 mi · 10110 Molecular Dr, Ste 209, Rockville, MD 20850
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Deidre Fisher, MSN, APRN, FNP-C, is a Family Nurse Practitioner with a 30-year career dedicated to patient care. Her journey in nursing began after graduating with a Bachelor of Science in Nursing from the University of Delaware, where she also participated in ARMY ROTC. Following her education, Dei...Click to read more
Next available: tomorrow
Gastroenterologist
4.66
·71 reviews
Dr. Byrne was very nice and did a good job communicating with me - Feb 4, 2026 by Matthew K.Click to read more
20 mi · 501 N Frederick Ave, Ste 204, Gaithersburg, MD 20877
In-network · UnitedHealthcare
Accepting new patients ·
Read bio
Dr. Robert Byrne is an experienced gastroenterologist who practices at the Gastro Center of MD. He offers services to people in Riverdale and Gaithersburg, MD. Dr. Byrne is committed to providing exceptional, patient-centered care for digestive and liver disorders. He listens to each patient and cr...Click to read more
Next available: Thu, Dec 3
Gastroenterologist
4.70
·40 reviews
Great staff. The doctor was very communicative and listened to all my concerns. - Jan 27, 2026 by Carlos A.Click to read more
20 mi · 501 N Frederick Ave, Ste 204, Gaithersburg, MD 20877
In-network · UnitedHealthcare
Accepting new patients ·
Read bio
Dr. Jennie Zhang is a distinguished gastroenterologist. She practices at the Gastro Center of MD, serving patients in Silver Spring, Riverdale, and Olney, MD. Dr. Zhang completed her medical degree at the West Virginia School of Osteopathic Medicine and her residency in internal medicine at the Uni...Click to read more
Next available: Fri, Dec 4
Family Physician
4.74
·31 reviews
16.5 mi · 10110 Molecular Dr, Ste 209, Rockville, MD 20850
In-network · UnitedHealthcare
Accepting new patients · 24 years of experience · Highly recommended · Excellent wait time · Expertise in underactive thyroid + 4 more ·
Read bio
Avni Jain, MD, FAAFP is board-certified in family medicine and obesity medicine. She is a dedicated and compassionate physician with a passion for helping individuals and families achieve their optimal health and well-being. As a board-certified Family and Obesity Medicine specialist, she brings a u...Click to read more
Next available: Fri, Nov 13
Gastroenterologist
4.82
·432 reviews
Dr Xu is excellent and very informative. He is extremely thorough and makes clear decisions on next steps. - Jun 30, 2023 by Michael O.Click to read more
20 mi · 501 N Frederick Ave, Ste 204, Gaithersburg, MD 20877
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait timeExpertise in upper gi endoscopy + 4 more
Next available: Mon, Dec 7
Physician Assistant (Gastroenterology)
4.95
·20 reviews
I would definitely recommend my PA MELISSA To a friend. She was very thorough and extremely helpful and nice! - Mar 20, 2026 by Gloria G.Click to read more
17 mi · 15225 Shady Grove Rd,, Ste 304, Rockville, MD 20850
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Ms. Melissa Nickols is an experienced physician assistant who specializes in gastroenterology. She is based out of Maryland and offers in-person services at Gastro Center of MD in Silver Spring, Riverdale, and Gaithersburg. As part of her formal education, Ms. Nickols acquired a master's degree in ...Click to read more
Next available: Fri, Nov 13
Gastroenterologist
4.67
·15 reviews
very professional and thorough. listened and asked questions by Hermione C.Click to read more
22 mi · 7120 Minstrel Way, Ste 100, Columbia, MD 21045
In-network · UnitedHealthcare
Accepting new patients · 25+ years of experience · Excellent wait time · Expertise in gastroenteritis + 9 more ·
Read bio
Dr. Rai is the Medical Director of Gastro Center of Maryland and Cascades Endoscopy Center. He is a Board-Certified Gastroenterologist and Hepatologist with over 20 years of experience. Dr. Rai completed his Bachelor of Medicine, Bachelor of Surgery at the All India Institute of Medical Sciences,...Click to read more
Next available: Mon, Nov 16
Gastroenterologist
4.39
·38 reviews
Dr Ahmed was very attentive, patient and knowledgeable. He listened to my symptoms and concerns, before checking me and giving his expert opinion. When I shared with him I had lab appointment afterwards, he made me aware lab office was in-house, which was very convenient. I would recommend him to an...Click to read more
22 mi · 7130 Minstrel Way, Ste 215, Columbia, MD 21045
In-network · UnitedHealthcare
Accepting new patients · Expertise in upper gi endoscopy + 5 more ·
Read bio
Dr. Urooj Ahmed is a dedicated gastroenterologist practicing at the Gastro Center of MD, serving the communities of Columbia and Annapolis, MD. With extensive training and experience, Dr. Ahmed diagnoses and manages various gastrointestinal conditions to improve his patients' quality of life. Dr. A...Click to read more
Next available: Mon, Nov 16
Gastroenterologist
4.82
·319 reviews
Very positive experience with Dr. Rosenbloom and staff! - May 18, 2026Click to read more
22 mi · 7120 Minstrel Way, Ste 100, Columbia, MD 21045
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Expertise in acid reflux + 4 more ·
Read bio
Dr. Josh Rosenbloom is a Board-Certified physician who specializes in both Gastroenterology and hepatology. Dr. Rosenbloom received his medical degree from Des Moines University and completed his internal medicine residency and Gastroenterology fellowship at St. John Providence health system through...Click to read more
Next available: Tue, Nov 17
Gastroenterologist
4.90
·233 reviews
The doctor was very informative and explained what I didn't know and pointed me in the right direction to get what I needed - Nov 6, 2025Click to read more
22 mi · 7130 Minstrel Way, Ste 215, Columbia, MD 21045
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Dr. Thi Khuc is a skilled gastroenterologist currently practicing at the Gastro Center of MD in Columbia and Annapolis (MD). She is also certified by the American Board of Internal Medicine. After earning her medical degree from the University of Virginia, Dr. Khuc completed her internal medicine ...Click to read more
Next available: Tue, Nov 17
Gastroenterologist
4.80
·41 reviews
I’ve been a patient for 10+ years and Dr. Lasner has been the best GI I’ve seen around. He’s a great person he genuinely cares about his patients wellbeing and will do anything in his power to help get them to remission. - Mar 26, 2026 by Moe RClick to read more
22.5 mi · 5651 Stone Rd, Centreville,, VA 20120
In-network · UnitedHealthcare
Accepting new patients · 25+ years of experience · Highly recommended · Expertise in colonoscopy + 2 more ·
Read bio
Dr. Lance Lasner is one of a select few doctors to receive the Vitals® Patients’ Choice and the Vitals Compassionate Doctor awards for five consecutive years. He brings over 25 years of experience to his role as a gastroenterologist at Northern Virginia Gastroenterology, P.C. Dr. Lasner earned hi...Click to read more
Next available: Mon, Nov 16
Gastroenterologist
4.88
·243 reviews
Great and exceptional service. Doctor Castillo is a great listener and he is caring. - Jan 10, 2022 by Franklyn I.Click to read more
22 mi · 7120 Minstrel Way, Ste 100, Columbia, MD 21045
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait time · Expertise in upper gi endoscopy + 2 more ·
Read bio
Serving the communities of Olney and Columbia, MD, Dr. Eduardo Castillo is an attending physician at Gastro Center of Maryland. An accomplished gastroenterologist, he looks forward to providing his patients with the proper tools and advice they need to improve or maintain their overall health. Dr...Click to read more
Next available: Mon, Nov 16
Gastroenterologist
4.83
·48 reviews
Doc Moc is killer. Colloquial. Friendly. Clear and thorough. - Sep 8, 2026 by Richard E.Click to read more
22 mi · 7120 Minstrel Way, Ste 100, Columbia, MD 21045
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait time · Expertise in upper gi endoscopy + 2 more ·
Read bio
Dr. Shaffer Mok is a skilled gastroenterologist. He practices at Gastro Center of MD in Owings Mills, Nottingham, and Lutherville Timonium, MD. With a patient-centered approach, Dr. Mok takes the time to understand each individual's symptoms, concerns, and lifestyle, fostering a trusting and collab...Click to read more
Next available: Wed, Nov 18
Gastroenterologist
4.93
·109 reviews
Dr. Talati was very kind, knowledgeable & very understanding. Thank you. by ABClick to read more
22 mi · 7130 Minstrel Way, Ste 215, Columbia, MD 21045
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Dr. Rushi Talati is an experienced gastroenterologist at Gastro Center of MD in Riverdale, Gaithersburg, and Olney, MD. He also offers services to people with digestive conditions that affect their quality of life. Dr. Talati understands patients' conditions and prepares individualized treatment pl...Click to read more
Next available: Wed, Nov 18
Gastroenterologist
4.39
·38 reviews
Dr Ahmed was very attentive, patient and knowledgeable. He listened to my symptoms and concerns, before checking me and giving his expert opinion. When I shared with him I had lab appointment afterwards, he made me aware lab office was in-house, which was very convenient. I would recommend him to an...Click to read more
22 mi · 7120 Minstrel Way, Ste 100, Columbia, MD 21045
In-network · UnitedHealthcare
Accepting new patients · Expertise in upper gi endoscopy + 5 more ·
Read bio
Dr. Urooj Ahmed is a dedicated gastroenterologist practicing at the Gastro Center of MD, serving the communities of Columbia and Annapolis, MD. With extensive training and experience, Dr. Ahmed diagnoses and manages various gastrointestinal conditions to improve his patients' quality of life. Dr. A...Click to read more
Next available: Thu, Nov 19
Gastroenterologist
4.84
·124 reviews
Great experience the doctor was very knowledgeable and friendly. - Oct 7, 2025 by Vecoya B.Click to read more
22 mi · 7120 Minstrel Way, Ste 100, Columbia, MD 21045
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Expertise in acute gastrointestinal bleeding + 5 more ·
Read bio
Dr. Monica Passi is a distinguished gastroenterologist. She practices at the Gastro Center of MD and sees patients in Riverdale and Annapolis, MD.  Dr. Passi completed her medical degree from George Washington University and her internship in internal medicine at North Shore University Hospital. Sh...Click to read more
Next available: Thu, Nov 19
Gastroenterologist
4.87
·435 reviews
Dr Lowe was professional, knowledgeable and overall great..!!!! - Apr 2, 2025 by milorad L.Click to read more
22 mi · 7120 Minstrel Way, Ste 100, Columbia, MD 21045
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait timeExpertise in upper gi endoscopy + 2 more
Next available: Fri, Nov 20
Gastroenterologist
4.90
·554 reviews
Improvement needed on timeliness, though the Doctor apologized for the unforeseen delay in waiting.Click to read more
22 mi · 7120 Minstrel Way, Ste 100, Columbia, MD 21045
In-network · UnitedHealthcare
Accepting new patients · 18 years of experience · Highly recommended · Expertise in colonoscopy + 3 more ·
Read bio
Farzin Rashti, M.D., FACP is Board Certified in Gastroenterology & Hepatology and Internal Medicine and is dedicated to offering his patients superior personalized care in a respectful and supportive environment. Dr. Rashti works toward developing a partnership with his patients and forms a unique c...Click to read more
Next available: Mon, Nov 23
Gastroenterologist
4.82
·432 reviews
Dr Xu is excellent and very informative. He is extremely thorough and makes clear decisions on next steps. - Jun 30, 2023 by Michael O.Click to read more
22 mi · 7120 Minstrel Way, Ste 100, Columbia, MD 21045
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait timeExpertise in upper gi endoscopy + 4 more
Next available: Tue, Nov 24
Gastroenterologist
4.92
·218 reviews
Very fast, listens wells, and the staff was friendly and willing to give steps and explanation. by APClick to read more
22 mi · 7120 Minstrel Way, Ste 100, Columbia, MD 21045
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Dr. Alexander Mamunes is a reliable and accomplished internist. Catering to the people of Columbia and Timonium, MD, he works at the Gastro Center of MD, treating various complex chronic disorders in adults. As a part of his educational training, Dr. Mamunes acquired his medical degree from the Un...Click to read more
Next available: Wed, Nov 25
Gastroenterologist
4.93
·109 reviews
Dr. Talati was very kind, knowledgeable & very understanding. Thank you. by ABClick to read more
22 mi · 7120 Minstrel Way, Ste 100, Columbia, MD 21045
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Dr. Rushi Talati is an experienced gastroenterologist at Gastro Center of MD in Riverdale, Gaithersburg, and Olney, MD. He also offers services to people with digestive conditions that affect their quality of life. Dr. Talati understands patients' conditions and prepares individualized treatment pl...Click to read more
Next available: Wed, Nov 25
Internist
5.00
·1 review
18 mi · 3903 Fair Rdg Dr, Ste 218, Fairfax, VA 22033
In-network · UnitedHealthcare
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Dr. Simmi Singh, MD is an Internal Medicine physician dedicated to patient-centered, evidence-based primary care for adults. A native of the Washington, DC metropolitan area, Dr. Singh earned her medical degree from Howard University College of Medicine and a Master of Public Health from The George ...Click to read more
Next available: Fri, Nov 13
Physician Assistant
5.00
·3 reviews
She is one of the best doctors that I have. She took her time to listen and to review my issue. She cares for her patient. - Oct 16, 2026 by Diem Loan D.Click to read more
18 mi · 3903 Fair Rdg Dr, Ste 218, Fairfax, VA 22033
In-network · UnitedHealthcare
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Juliana Samar, PA-C, DMSc, is a highly trained physician assistant at Prima Medicine with a strong foundation in primary care, dermatology, preventive medicine, and patient-centered chronic disease management. She earned her Doctorate in Medical Science from Shenandoah University and completed advan...Click to read more
Next available: Fri, Nov 13
Gastroenterologist
4.81
·309 reviews
Blew up phone with texts. Repeatedly for the same thing that had been completed on line. Stick with pen and paper - Jan 30, 2025Click to read more
22 mi · 7120 Minstrel Way, Ste 100, Columbia, MD 21045
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Expertise in colonoscopy + 3 more ·
Read bio
Dr. Pia Prakash completed her medical training in Washington, D.C. She received her Bachelor in Arts and Sciences from The George Washington University with a major in Psychology. She then attended the George Washington University School of Medicine where she received her medical degree and complete...Click to read more
Next available: Thu, Dec 3
Gastroenterologist
4.90
·233 reviews
The doctor was very informative and explained what I didn't know and pointed me in the right direction to get what I needed - Nov 6, 2025Click to read more
22 mi · 7120 Minstrel Way, Ste 100, Columbia, MD 21045
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
Dr. Thi Khuc is a skilled gastroenterologist currently practicing at the Gastro Center of MD in Columbia and Annapolis (MD). She is also certified by the American Board of Internal Medicine. After earning her medical degree from the University of Virginia, Dr. Khuc completed her internal medicine ...Click to read more
Next available: Thu, Dec 10
Nurse Practitioner (Gastroenterology)
4.91
·116 reviews
Clear, concise, great listener, and very kind. Go to her! - Jul 13, 2026 by Grace G.Click to read more
22 mi · 46169 Westlake Dr, Ste 200, Sterling, VA 20165
In-network · UnitedHealthcare
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
*$75 cancellation fee if cancelled within 48 hours of the appointment* Courtney Ngo, MSN, FNP-C, is a board-certified family nurse practitioner committed to providing patient-centered, quality care. She earned her bachelor's degree from Virginia Tech and completed her master's in nursing at The Geo...Click to read more
Next available: tomorrow
Gastroenterologist
4.84
·124 reviews
Great experience the doctor was very knowledgeable and friendly. - Oct 7, 2025 by Vecoya B.Click to read more
28.5 mi · 1419 Frst Dr, Annapolis, MD 21403
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Expertise in acute gastrointestinal bleeding + 5 more ·
Read bio
Dr. Monica Passi is a distinguished gastroenterologist. She practices at the Gastro Center of MD and sees patients in Riverdale and Annapolis, MD.  Dr. Passi completed her medical degree from George Washington University and her internship in internal medicine at North Shore University Hospital. Sh...Click to read more
Next available: Fri, Nov 13
Nurse Practitioner (Gastroenterology)
4.89
·94 reviews
Amazing care and bedside manner! The whole staff was wonderful. - Jul 17, 2026 by Nargess T.Click to read more
22 mi · 46169 Westlake Dr, Ste 200, Sterling, VA 20165
In-network · UnitedHealthcare
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
Read bio
*$75 cancellation fee if cancelled within 48 hours of the appointment* Maria Layao FNP-BC is a dedicated and compassionate nurse practitioner who cares for patients with Crohn’s disease, ulcerative colitis, infectious colitis, GERD, Barrett’s esophagus, viral hepatitis, liver disease, and many othe...Click to read more
Next available: Mon, Nov 16
Physician Assistant
4.80
·5 reviews
The only drawback was the blood draw. Wasn’t very friendly. Maybe she just had a bad day. - Oct 2, 2026 by Robert F.Click to read more
25 mi · 8205 Snowden River Pkwy, Columbia, MD 21045
In-network · UnitedHealthcare
Accepting new patients · Excellent wait time ·
Read bio
Licensed PA-C, graduated from Lake Erie College for my master's in physician assistant studies. Certified by NCCPA. 2 years of experience in acute care medicine treating immediate injury but also follow up chronic care. Able to treat a wide range of illnesses for all age groups. Passionate about ove...Click to read more
Next available: tomorrow
Nurse Practitioner (Gastroenterology)
4.98
·41 reviews
My nurse practitioner was a very good listener and the medical assistant also took my vitals before I saw the NP. - Sep 21, 2026 by lizabeth S.Click to read more
22 mi · 7130 Minstrel Way, Ste 215, Columbia, MD 21045
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait time
Next available: Fri, Nov 20
Gastroenterologist
4.39
·38 reviews
Dr Ahmed was very attentive, patient and knowledgeable. He listened to my symptoms and concerns, before checking me and giving his expert opinion. When I shared with him I had lab appointment afterwards, he made me aware lab office was in-house, which was very convenient. I would recommend him to an...Click to read more
28.5 mi · 1419 Frst Dr, Annapolis, MD 21403
In-network · UnitedHealthcare
Accepting new patients · Expertise in upper gi endoscopy + 5 more ·
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Dr. Urooj Ahmed is a dedicated gastroenterologist practicing at the Gastro Center of MD, serving the communities of Columbia and Annapolis, MD. With extensive training and experience, Dr. Ahmed diagnoses and manages various gastrointestinal conditions to improve his patients' quality of life. Dr. A...Click to read more
Next available: Wed, Dec 9
Gastroenterologist
4.90
·233 reviews
The doctor was very informative and explained what I didn't know and pointed me in the right direction to get what I needed - Nov 6, 2025Click to read more
28.5 mi · 1419 Frst Dr, Annapolis, MD 21403
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait time ·
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Dr. Thi Khuc is a skilled gastroenterologist currently practicing at the Gastro Center of MD in Columbia and Annapolis (MD). She is also certified by the American Board of Internal Medicine. After earning her medical degree from the University of Virginia, Dr. Khuc completed her internal medicine ...Click to read more
Next available: Fri, Dec 11
Physician Assistant
5.00
·3 reviews
She is one of the best doctors that I have. She took her time to listen and to review my issue. She cares for her patient. - Oct 16, 2026 by Diem Loan D.Click to read more
25.5 mi · 43130 Amberwood Plz, Ste 130, South Riding, VA 20152
In-network · UnitedHealthcare
Also offers video visits · Accepting new patients · Highly recommended · Excellent wait time ·
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Juliana Samar, PA-C, DMSc, is a highly trained physician assistant at Prima Medicine with a strong foundation in primary care, dermatology, preventive medicine, and patient-centered chronic disease management. She earned her Doctorate in Medical Science from Shenandoah University and completed advan...Click to read more
Next available: tomorrow
Gastroenterologist
4.83
·48 reviews
Doc Moc is killer. Colloquial. Friendly. Clear and thorough. - Sep 8, 2026 by Richard E.Click to read more
38 mi · 21 Crossroads Dr, Ste 205, Owings Mills, MD 21117
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait time · Expertise in upper gi endoscopy + 2 more ·
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Dr. Shaffer Mok is a skilled gastroenterologist. He practices at Gastro Center of MD in Owings Mills, Nottingham, and Lutherville Timonium, MD. With a patient-centered approach, Dr. Mok takes the time to understand each individual's symptoms, concerns, and lifestyle, fostering a trusting and collab...Click to read more
Next available: Tue, Nov 17
Gastroenterologist
4.83
·48 reviews
Doc Moc is killer. Colloquial. Friendly. Clear and thorough. - Sep 8, 2026 by Richard E.Click to read more
42.5 mi · 1212 York Rd, Ste B201, Lutherville Timonium, MD 21093
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Excellent wait time · Expertise in upper gi endoscopy + 2 more ·
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Dr. Shaffer Mok is a skilled gastroenterologist. He practices at Gastro Center of MD in Owings Mills, Nottingham, and Lutherville Timonium, MD. With a patient-centered approach, Dr. Mok takes the time to understand each individual's symptoms, concerns, and lifestyle, fostering a trusting and collab...Click to read more
Next available: Mon, Nov 16
Gastroenterologist
4.82
·319 reviews
Very positive experience with Dr. Rosenbloom and staff! - May 18, 2026Click to read more
42.5 mi · 1212 York Rd, Ste B201, Lutherville Timonium, MD 21093
In-network · UnitedHealthcare
Accepting new patients · Highly recommended · Expertise in acid reflux + 4 more ·
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Dr. Josh Rosenbloom is a Board-Certified physician who specializes in both Gastroenterology and hepatology. Dr. Rosenbloom received his medical degree from Des Moines University and completed his internal medicine residency and Gastroenterology fellowship at St. John Providence health system through...Click to read more
Next available: Mon, Nov 16
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Primary Care Physician
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In the business of finding quality care for patients

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Frequently asked questions

How can I make a same-day appointment with a Gastroenterologist in Washington who takes UnitedHealthcare insurance?

On average, patients who use Zocdoc can search for a Gastroenterologist in Washington who takes UnitedHealthcare insurance, book an appointment, and see the Gastroenterologist within 24 hours. Same-day appointments are often available, you can search for real-time availability of Gastroenterologists in Washington who accept UnitedHealthcare insurance and make an appointment online.


How can I find a Gastroenterologist in Washington who takes UnitedHealthcare?

Zocdoc lets you search specifically for a Gastroenterologist in Washington who takes UnitedHealthcare. Just choose your carrier and plan from the drop-down menu at the top of the page. If you’re not sure which plan you have, you can use Zocdoc’s insurance checker to find out.


How can I book an appointment online with a UnitedHealthcare Gastroenterologist in Washington?

Zocdoc is a free online service that helps patients find UnitedHealthcare Gastroenterologists in Washington and book appointments instantly. You can search for UnitedHealthcare Gastroenterologists in Washington by symptom or visit reason. Based on that information, you’ll see a list of providers who meet your search criteria, along with their available appointment slots.


How can I find a female Gastroenterologist in Washington who takes UnitedHealthcare insurance?

When you search for UnitedHealthcare Gastroenterologists in Washington on Zocdoc, you can filter your results by gender, in addition to other criteria. That way, you’ll only see UnitedHealthcare Gastroenterologists in Washington who match your preferences.


How can I find a UnitedHealthcare Gastroenterologist in Washington who sees patients after hours?

On Zocdoc, you can search specifically for UnitedHealthcare Gastroenterologists in Washington with availability after 5 p.m.


How can I find a top-rated UnitedHealthcare Gastroenterologist in Washington?

You can use Zocdoc to find UnitedHealthcare Gastroenterologists in Washington who are highly rated by other patients. These ratings are based on verified reviews submitted by real patients. Every time a patient completes an appointment booked on Zocdoc, they’re invited to review their experience. Each review must comply with Zocdoc’s guidelines.


How can I find a video visit with a Gastroenterologist online in Washington?

Gastroenterologists in Washington on Zocdoc who see patients through online video visits will have a purple video icon on their profiles. You can also filter your search results to show only Gastroenterologists who offer video visits.


Are video visits with a Gastroenterologist online covered by UnitedHealthcare?

Most insurers provide coverage for video visits at the same cost as in-person visits. You can search on Zocdoc specifically for Gastroenterologists in Washington who accept UnitedHealthcare for video visits by selecting your carrier and plan from the drop-down menu at the top of the page. We recommend you check with your insurance carrier directly to confirm your coverage and out of pocket costs for video visits.


How can I find a UnitedHealthcare Gastroenterologist in Washington who sees patients in the morning or evening?

Zocdoc lets you search specifically for a Gastroenterologist who has appointments available before 10:00 am, or after 5:00 pm. Just choose the special hours filter at the top of our search page.


How can I find a UnitedHealthcare Gastroenterologist in Washington who sees patients during the weekend?

Zocdoc let's you see real-time availability for UnitedHealthcare Gastroenterologists in Washington. Many UnitedHealthcare Gastroenterologists offer appointments on Saturdays and Sundays.


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