About Dr. Seyedehsan Navabi
Dr. Seyedehsan (“Ehsan”) Navabi is a former Director of both the Inflammatory Bowel disease and Gastrointestinal Motility Disorders at the Rutgers New Jersey Medical School where he served as Assistant Professor of Gastroenterology.
He obtained his medical degree from Tabriz University of Medical Sciences in Iran and completed both his Internal Medicine residency and Gastroenterology/Hepatology Fellowship at Pennsylvania State University. He is board certified in gastroenterology, obesity medicine and internal medicine.
As an Assistant Professor of Gastroenterology at Rutgers New Jersey Medical School, he trained fellows and had extensive experience managing a wide range of complex disorders related to esophagus, stomach, small bowel, colon, liver and pancreas in a tertiary care setting.
In-network insurances
99% of patients have successfully booked with these insurances
Aetna
BlueCross BlueShield
Cigna
Medicare
UnitedHealthcare
Practice
United Medical Doctors
United Medical Doctors (UMD) is dedicated to improving the health of our communities by setting the standard of excellence in specialty medical & surgical care. UMD currently offers 50+ medical & surgical specialties with over 200 providers in 80+ locations across four Southern California counties: Riverside, Orange, San Diego & Los Angeles. Our specialties include: Acupuncture | Allergy | Anesthesia | Audiology | Bariatric Surgery | Breast Surgery | Cardiology | Clinical Research | Colorectal Surgery | Complex GI Surgery | Dermatology | Dietitian | Endocrine Surgery | Endocrinology | Family Medicine | Fitness | Foot & Ankle Specialist & Surgery | Gastroenterology | General Surgery | Gynecology | HPB Surgery | Hepatology | Imaging | Infusion Therapy | Internal Medicine | Medical Weight Loss | Men’s Health | Minimally Invasive Gynecologic Surgery | Neurosurgery | Oncology | Otorhinolaryngology (ENT) | Orthopaedic Surgery | Pain Management | Pathology | Pediatric Gastroenterology | Physical Therapy | Plastic Surgery | Psychiatry | Radiology | Spine Medicine | Sports Medicine | Urgent Care | Urogynecology & Female Pelvic Health | Urology | Wound CareOffice locations
United Medical Doctors - Los Alamitos, Katella Ave (1 of 3)
3851 Katella Ave, Ste 205, Los Alamitos, CA 90720
1 of 3
Education and background
Board certifications
- American Board of Internal Medicine
- American Board of Obesity Medicine
- Gastroenterology (American Board of Internal Medicine)
Education and training
- Medical School - Tabriz University of Medical Sciences, Doctor of Medicine
- Penn State Health Milton S. Hershey Medical Center, Residency in Internal Medicine
- Penn State Health Milton S. Hershey Medical Center, Fellowship in Gastroenterology and Hepatology
- Penn State Health Milton S. Hershey Medical Center, Internship in Internal Medicine
Professional memberships
- American Gastroenterological Association
- American College of Gastroenterology
- American Association for the Study of Liver Diseases
Languages spoken
- English
Provider's gender
Male
NPI number
1801229109
Patient reviews
Overall rating
4.94
Wait time
4.72
Bedside manner
4.94
Your trust matters. All reviews have been submitted by verified patients after seeing the provider. Any content containing private health information is not published.
156 reviews
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Amazing staff! helpful and friendly. I really like the doctor. He's knowledgeable, personable and answer all my questions.
January 9, 2026Initials hidden
Appointment went smooth, answered all my questions and was clear on what I needed to do for my procedure ?
March 4, 2026Armando M.Verified patient
Doctor is great! He really put me at ease, as I was quite nervous about my appointment.
March 10, 2026Aleksandra S.Verified patient
They were able to schedule a coloscopy for this year. Timing could not of been more perfect!
December 4, 2025paul L.Verified patient
Great Dr. Listened to all my symptoms. Helped me choose the right path to take. Staff is great also.
August 6, 2025MICHELLE C.Verified patient
The doctor was very informative, yet listened to my concerns which made me feel comfortable.
June 3, 2025Brenda B.Verified patient
Was a good listener. Very professional and nice. Easy to talk to.
February 23, 2026Initials hidden
He answered my questions and discussed any concerns I had. I highly recommend him.
May 31, 2025Marty D.Verified patient
Excellent, friendly, knowledgeable service from whole staff of this office
October 8, 2024Allison R.Verified patient
I had a great appointment and would highly recommend
July 21, 2025Initials hidden
Doctor was very attentive and knowledgeable. The office staff was great.
More than 1 year agoInitials hidden
Excellent provider who truly cares about his patients.
July 8, 2024Initials hidden
Dr Navabi is an excellent communicator. He has a very positive and caring demeanor. After going over the treatment plan he asked me three different times if I had any questions. I highly recommend him.
October 28, 2026James K.Verified patient
The office staff is professional and caring.
Dr Navabi is friendly and professional; he explains things well and is very thorough. He answer questions fully and listens to his patients.
I would recommend him to my friends or anyone looking for a caring professional.
September 29, 2026Claire M.Verified patient
I was referred to Dr Navabi from an emergency room visit. I've consulted with him several times and had a colonoscopy for an intestinal bleeding issue. He has always been kind and explains the details to me and sent me out for further testing to ensure that I was getting the best care. I would definitely recommend him to anyone with a GI issue.
Less than 6 months agoDebbie R.Verified patient
Dr Navabi could see me on short notice which was good as I was having stomach pains. He was cautious with his initial diagnosis and waited until he had more information. He was kind and curious about my symptoms.
May 5, 2026Robert S.Verified patient
Awesome doctor!! He really cares and listens
April 12, 2026Niyati C.Verified patient
Dr Navabi was very professional, caring and very importantly, he is a good listener. He explained everything well and answered all my questions.
I highly recommend him.
April 1, 2026Claire M.Verified patient
I would definitely go back! Dr Navabi was patient and considerate and listened to my concerns. He ordered labs and multiple tests to try to figure out what was going on without me having to ask.
February 17, 2026Alexandria P.Verified patient
Good service, low waiting time
February 16, 2026Jose R.Verified patient
The doctor was friendly and knew exactly how he wanted to treat my symptoms. The elevator to the office was out of service so I had to carry my toddler and stroller up the stairs. I noticed another patient with crutches having to hop up the stairs. One of the front desk ladies was a little short with me and bluntly said “we don’t accept Zocdoc forms so I don’t know why we have that”. I did receive a link to fill out the forms but the code it provided me did not work so I wasn’t able to fill out the forms. I then called the same front desk lady and she told me “We don’t deal with that you’ll have to call United Medical Doctors to figure that out. We only send the link”. I call the United Medical doctors and left a voicemail, but no one called back. I spent about 20 minutes filling this paperwork out with my toddler next to me. Needless to say the experience before seeing the doctor was stressful and annoying.
September 24, 2025Initials hidden
Very good communication. Patiently answered all my questions and reassured me. Helpful office staff; check in was quick and easy to schedule future visit. Thank you.
More than 1 year agoMichael B.Verified patient
Great experience. I was admitted nearly immediately with no wait, and the doctor listened, asked me questions, explained everything carefully, and overall made me feel really heard. I'm glad I chose this doctor's office!
July 21, 2025Cristyen F.Verified patient
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June 25, 2025Kevin V.Verified patient
I liked the doctor's bedside manner, clarity in all things, and good disposition. And he is very knowledgeable of his speciality.
June 7, 2025Ana G.Verified patient
The doctor has excellent bedside manners. He is very attentive and listens to concerns and questions. I am so impressed by the initial office visit and will recommend the doctor to everyone.
April 28, 2025Waltraud W.Verified patient
I liked him. He wanted to run all tests to determine exactly what was wrong and to help me get better. I really enjoyed meeting him, very nice and knowledgeable!!
April 2, 2025Shanna L.Verified patient
This doctor is awesome I've been his patient for 2 years already and is been great everytime I have seen him, attentive and listen to my needs.
February 27, 2025Michaelle S.Verified patient
Awesome doctor. Great bedside manner.
More than 1 year agoJoshua S.Verified patient
Wonderful!
November 18, 2024Mai Cindy L.Verified patient
Excellent staff and doctor! Very caring ! I was able to do few of my appointments and scratch it off my to do list. They were nice to suggest other doctors for annual checkup. I had a very smooth experience:)
September 30, 2024Natalya G.Verified patient
I would like to express my gratitude to the doctor for his attentive and compassionate care. Despite the language barrier, he listened carefully to my concerns, provided thorough consultation, and helped me navigate the situation. I felt comfortable and at ease during the appointment, which was very important to me.
September 17, 2024Ekaterina S.Verified patient
Great experience. Thank you!
More than 1 year agoInitials hiddenVideo visit
Great. Highly recommend. Super thorough. Great bedside manner. Office staff is friendly and efficient. Doctor is super knowledgable, caring and affirming.
September 9, 2024Jennifer James D.Verified patient
This happened to be a same day and at the. end of the day and I still received outstanding service from front desk, appointment setter and the doctor who didn't rush me and this being the last appointment.
He answered all my questions. And he seemed so concerned about what I had on my mind and what he could do for me. He was confident and in delivery to me am and look guys he even answered my daughter's question
January 9, 2024Sonya S.Verified patient
Excellent Dr and tremendous bedside manner!
July 21, 2023Duke H.Verified patient
Good Doctor and Helpful Staff.
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August 2, 2026Timothy P.Verified patient
May 20, 2026Allison C.Verified patient
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May 13, 2026Prathiksha K.Verified patient
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April 20, 2026Valya D.Verified patient
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March 26, 2026Christina T.Verified patient
March 24, 2026Claire M.Verified patient
Less than 1 year agoInitials hidden
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