What patients are saying
Overall rating
4.83
Average wait time
4.63
Bedside manner
4.85
“I really enjoyed my experience at this office. Office was easy to find, check-in process was smooth and friendly, office itself was clean and efficient, and I had a very short wait time compared to other offices I've visited. Provider was patient, thorough, and made me feel very comfortable.”
Amy A.August 7, 2025
“Always a pleasure during my annual visits! Was seen right away, excellent bedside manner. Would 100% recommend Spring OBGYN to anyone!”
Lauren B.July 16, 2025
About Dr. Heidi Flagg
“ESTABLISHED PATIENTS PLEASE DO NOT BOOK AS A NEW PATIENT”
“IF YOU SCHEDULED AN ANNUAL AND ARE ACTUALLY A NEW PATIENT TO THE PRACTICE YOU WILL NOT BE SEEN. SO PLEASE MAKE SURE YOU SCHEDULED APPROPRIATELY AS A NEW PATIENT.”
"IF YOU HAVE NOT BEEN SEEN FOR 3 OR MORE YEARS YOU ARE CONSIDERED A NEW PATIENT"
Heidi Flagg is a friendly and experienced OB-GYN serving her patients in New York, NY. Dr. Flagg is certified by the American Board of Obstetrics and Gynecology. She is currently a member of the American College of Obstetrics and Gynecology, the American Medical Association, and the Kansas Medical Society.
Dr. Flagg offers her patients a number of services, including annual physicals, pap smears, birth control, menopause consultations, genetic counseling, and post-partum visits. She welcomes patients to her practice who are experiencing acne, urinary tract infections, abdominal pain, STDs, and ovarian cysts.
Dr. Flagg received her medical degree from the University of Kansas, and she completed her residency through the Women and Infant’s Hospital of Brown University. Dr. Flagg strives to continue her education through research, and her work has been published in medical journals, such as the IARS journal of Anesthesia and Analgesia.
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In-network insurances
99% of patients have successfully booked with these insurances
Aetna
BlueCross BlueShield
Cigna
UnitedHealthcare
UnitedHealthcare Oxford
Popular visit reasons
Annual Pap Smear / GYN Exam
Birth Control / Contraception
Bladder Pain / Interstitial Cystitis
Menstrual Cramp(s)
New Patient Visit
OB-GYN Consultation
Sexually Transmitted Infection (STI)
Vasomotor Symptoms
Annual Pap Smear / GYN Exam
Birth Control / Contraception
Bladder Pain / Interstitial Cystitis
Menstrual Cramp(s)
Office location
Education and background
Practice names
Hospital affiliations
- NYU Langone Health
Board certifications
- American Board of Obstetrics and Gynecology
Education and training
- Medical School - University of Kansas, Doctor of Medicine
- Brown University, Women & Infants Hospital (Residency)
Awards and publications
- Castle Connolly Top Doctor
Languages spoken
- English
Provider's gender
Female
NPI number
1053309641
Patient reviews
All reviews have been submitted by patients after interacting with the practice.
Overall rating
4.83
Wait time
4.63
Bedside manner
4.85
Your trust is our top concern, so providers can't pay to alter or remove reviews. We also don't publish reviews that contain any private patient health information. Learn more here
914 reviews
Most relevant
She was great and made me feel very comfortable. Could have spent a little more time with me but appreciated the speed too
August 15, 2017Initials hidden
One of the best doctors office visits in a long time. Honest, direct and respectful. I would highly recommended Dr. Flagg
January 8, 2019Brigitte P.Verified patient
Great front office staff. Dr Flagg was knowledgeable and had great bedside manner. Highly highly recommend this office.
January 25, 2017Initials hidden
She was very reassuring, knowledgable, kind, thorough, and an all around good doctor. I would absolutely recommend her!
More than 1 year agoKareen F.Verified patient
Friendly, empathetic to my situation and extremely knowledgeable. I left feeling I knew all my options and next steps.
February 2, 2016Initials hidden
Dr. Flagg is very warm and professional, with an excellent bedside manner. She was efficient without feeling rushed.
October 18, 2017Hannah S.Verified patient
She's was very informative and willing to answer my questions. It was my first visit with her and I felt comfortable.
More than 1 year agoInitials hidden
Heidi is very cool and makes you feel totally comfortable. Best experience I've had at a Drs office in a long time :)
May 11, 2016Sara H.Verified patient
Very friendly and knowledgeable! Was able to make me feel much more comfortable and confident than previous doctors.
More than 1 year agoInitials hidden
I met with Mindy Valenti. She was friendly, very knowledgable, and calm. Made my first visit there very pleasant.
December 3, 2021Initials hidden
Dr. Heidi made me feel super comfortable and assured me that everything would be okay! Staff was also very helpful.
February 5, 2019Valerie L.Verified patient
Amazing experience from the beginning to the end. Highly recommend!
August 24, 2025Initials hidden
Dr Flagg was so nice and made me feel very comfortable. The office had a great flow. So happy I found this place.
June 7, 2017Carly S.Verified patient
Dr. Flagg is very attentive to my concerns & has a great bedside manner. I highly recommend Dr. Flagg as a GYN.
December 8, 2021Michelle M.Verified patient
She ia an amazing Doctor. I have been a patient since 1999. Dr. Flagg and everyone in the practice are wonderful.
June 24, 2015Initials hidden
Dr. Flagg was very attentive and understanding, and had great advice. The appointment did not feel rushed at all.
March 3, 2018Kristen K.Verified patient
Dr. Flagg was great! Knowledgeable, professional and prompt. Definitely one of the best doctors I've seen in NYC.
May 21, 2015Chelsea C.Verified patient
The best OBGYN I've ever met. The office is very organized, everyone friendly. I highly recommend this practice.
More than 1 year agoInitials hidden
Dr. Flagg was sweet, approachable, efficient, and non threatening. I would recommend her very highly to anyone!
October 4, 2016Josie A.Verified patient
Really impressed with her expertise and thoroughness combined with a very kind manner, I would highly recommend.
January 26, 2016Pip L.Verified patient
Dr. Flagg was very informative and took the time to explain all of my options. I felt like I was in good hands.
April 8, 2017Mala B.Verified patient
Really good. Dr Flagg is charming. Explained everything extremely well, efficient and very easy to talk to.
June 21, 2018Gillian H.Verified patient
Dr. Flagg is very sweet person. She made me so comfortable there. I am glad to had an appointment with her.
May 18, 2016Ayuko K.Verified patient
Dr. Flagg was wonderful. My first time going, and she was thorough, compassionate, and made me feel heard.
More than 1 year agoInitials hidden
Dr Heidi was super friendly and the staff made me feel so comfortable despite it being my first gyno visit.
July 25, 2019Chun Hei Janesa C.Verified patient
Dr. Flagg was wonderful. Very professional but personable at the same time. Made me feel very comfortable.
January 10, 2019Stacy H.Verified patient
Warm environment, friendly doctor and staff, quick service—exactly what you want for an annual checkup.
April 9, 2018Emily T.Verified patient
I really liked dr Heidi - very professional, knowledgeable and nice lady! I would definitely recommend!
December 8, 2016Aleksandra K.Verified patient
Dr. Flagg was great- straight and to the point, but very kind and answered all of my questions clearly.
July 28, 2015Caitlin T.Verified patient
Heidi Flagg has been my Gyno for many years. She is warm, friendly and professional.
April 10, 2024Irene D.Verified patient
Everyone was super friendly, professional and informative. Dr. Flagg was very nice and easy to talk to.
May 1, 2017Pilar A.Verified patient
Dr. Flagg was terrific!! She's extremely professional, kind, and made me feel immediately comfortable.
May 16, 2019Madelin K.Verified patient
First visit with Dr. Flagg, and she was so great! No wait time, she put me at ease, very easy going.
September 27, 2017Initials hidden
Informative, enthusiastic, caring. Really thorough and professional annual exam! Thank you Dr Flagg.
April 22, 2016Allison S.Verified patient
Professional, friendly, helpful and exactly what I needed. Everyone at the practice seemed lovely.
More than 1 year agoInitials hidden
Nice office and people. Almost no wait. Good bedside manner. But exam felt a little bit rushed ??
November 5, 2020Initials hidden
She is absolutely wonderful doctor. Professional,kind and sweet. One of the best doctor in NYC.
July 17, 2018Ayuko K.Verified patient
Very professional and kind. I'm so happy to have a gynecologist that I feel comfortable with!
May 21, 2015Initials hidden
Excellent, thorough, down to earth, easy to talk to, comprehensive. will come back for sure.
February 18, 2016Initials hidden
The entire experience was absolutely great !
I loved that she explained everything to me.
May 18, 2017Iulia F.Verified patient
Dr. Mindy Valenti was so great! I felt listened to and comfortable asking any questions.
More than 1 year agoJessica W.Verified patient
Amazing! She was so nice and caring. Felt like a safe place to talk. 10/10 recommend!!!
More than 1 year agoTalia B.Verified patient
Loved my visit. She is wonderful and beyond professional. I can highly recommend her
May 31, 2018Sabrina H.Verified patient
Dr. Flagg is professional and friendly, always making me feel comfortable and heard.
January 21, 2020Emily V.Verified patient
I felt comfortable with the staff and Dr. Flagg. Everyone was great and professional.
January 14, 2016Priscilla L.Verified patient
Very sweet and friendly - and also modern. She understands a New York woman's life.
January 10, 2018Cristina P.Verified patient
Very caring and thoughtful physician. Had a minor procedure and she was excellent.
More than 1 year agoInitials hidden
I'm very happy to have found Dr. Flagg and plan to go to her for years to come!
October 26, 2016Katlin M.Verified patient
My experience with Dr. Flagg was great! I definitely recommend her to everyone.
October 7, 2015Initials hidden
Dr. Flagg is lovely! Very nice demeanor and calm energy -highly recommend her.
April 4, 2018Initials hidden
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How soon can I make an appointment with Dr. Heidi Flagg?
Generally, Dr. Heidi Flagg has appointments available on Zocdoc within 1 week. You can see Dr. Flagg's earliest availability on Zocdoc and make an appointment online.
Is Dr. Heidi Flagg accepting new patients?
Dr. Heidi Flagg generally accepts new patients on Zocdoc. You can see Dr. Flagg's earliest availability on Zocdoc and schedule an appointment online.
Does Dr. Heidi Flagg accept my insurance?
Choose your insurance plan to verify if Dr. Flagg is in-network.
Can I make an appointment with Dr. Heidi Flagg online?
Yes, you can make an appointment online with Dr. Flagg using Zocdoc. It’s simple, secure, and free.
Which hospital is Dr. Heidi Flagg affiliated with?
Dr. Heidi Flagg is affiliated with NYU Langone Health.
What practice does Dr. Heidi Flagg work with?
Dr. Heidi Flagg works with Spring OB-GYN, PC.
Where is Dr. Heidi Flagg's office located?
Dr. Heidi Flagg's office is located at 135 Spg St, New York, NY 10012.
Which board certifications does Dr. Heidi Flagg have?
Dr. Heidi Flagg is certified by American Board of Obstetrics and Gynecology.
What are common reasons for patients to see Dr. Heidi Flagg?
Dr. Heidi Flagg frequently sees patients for Annual Pap Smear / GYN Exam, Birth Control / Contraception, New Patient Visit, OB-GYN Consultation, and Sexually Transmitted Infection (STI). You can see other visit reasons for Dr. Heidi Flagg on their profile.
What languages does Dr. Heidi Flagg speak?
Dr. Heidi Flagg speaks English.
How do patients rate Dr. Heidi Flagg in reviews?
914 patients have reviewed Dr. Heidi Flagg. The overall rating for this doctor is 4.83/5. They have a 4.85/5 rating for bedside manner and a 4.63/5 rating for wait time. You can read individual reviews and ratings on their profile.