Are you a healthcare professional?
Is this your profile?
background
background
Dr. John Brennan, MD

Dr. John Brennan, MD

Obstetrics & Gynecology*
35+ years of experience

Dr. John Brennan, MD is an obstetrician gynecologist in Brooklyn, NY and has over 35 years of experience in the medical field. He graduated from Columbia University Vagelos College of Physicians and Surgeons in 1985. He is affiliated with medical facilities Newyork-Presbyterian Brooklyn Methodist Hospital and Lenox Hill Hospital. He is accepting new patients.

4.2 Star Rating
Based on 19 reviews 4.2 Star Rating (19 reviews)

Practice

220 Pacific St Brooklyn, NY 11201
(718) 222-3636

Dr. Brennan is a Healthgrades Choice provider in Obstetrics & Gynecology

The Healthgrades Choice designation helps you understand the most important factors to consider when choosing a healthcare professional. This designation is earned based on four set standards.
Read our methodology

  • Above average experience
  • Good hospital quality
  • Good patient ratings
  • No healthcare sanctions
  • Area of Expertise
    Dr. Brennan specializes in the area of Obstetrics & Gynecology. • See board certifications
  • Explains Conditions Well
    Patients said this doctor explains conditions well. • See reviews
  • Practices at Top Hospital
    Labor and Delivery Excellence Award™ • See hospitals
  • Trustworthy
    Patients said this doctor is trustworthy. • See reviews
ADVERTISEMENT
healthgrades-rx

Discounts on top medications

Optum Perks and Healthgrades are subsidiaries of RVO Health.

Experience Check

Search for experience in a specific area

Learn more about experience and why treatment frequency matters

Insurance Check

Search for your insurance carrier and choose your plan type

Dr. Brennan's Reviews

Likelihood to recommend Dr. Brennan

4.2

19 ratings, 5 with a written review
5 Star
79%
79%
4 Star
0%
0%
3 Star
0%
0%
2 Star
0%
0%
1 Star
21%
21%

Your trust is our top concern. Learn more.

We monitor all reviews to ensure they comply with our guidelines and don’t include personal information, profanity, libel, defamation, harassment, obscenity or fraud.

All reviews are confirmed and audited before publication, and community members have the ability to flag inappropriate content for further review by our team.

Doctors can not pay for good reviews, nor can they pay to have negative reviews removed.

Any reviews that are deemed fraudulent or violate our guidelines will be removed immediately.

RecentHighestLowestMost Helpful
What went well
No results
What could be improved
No results
Helpful
Kirstie R – May 15, 2020
×Post a ResponseAre you Dr. John Brennan, MD?
What went well
No results
What could be improved
  • Difficult to schedule appointment
  • Didn't listen or answer questions
  • Didn't explain conditions well
  • Staff wasn't friendly
  • Appointment was rushed
  • Didn't trust the provider's decisions
Helpful
Oct 27, 2019
×Post a ResponseAre you Dr. John Brennan, MD?
What went well
No results
What could be improved
No results
Helpful
May 02, 2019
×Post a ResponseAre you Dr. John Brennan, MD?
What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
  • Long wait times
2 people found this helpful
Helpful
Theresa in Brooklyn, NY – Dec 13, 2016
×Post a ResponseAre you Dr. John Brennan, MD?
What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
7 people found this helpful
Helpful
Rochelle in Ny – Dec 29, 2015
×Post a ResponseAre you Dr. John Brennan, MD?

Leave a review

How was your experience with Dr. Brennan?

Know Before You Go

About Me

biography

Dr. John Brennan, MD is an obstetrician gynecologist in Brooklyn, NY and has over 35 years of experience in the medical field. He graduated from Columbia University Vagelos College of Physicians and Surgeons in 1985. He is affiliated with medical...read more

  • Obstetrics & Gynecology

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • Albert Einstein College Of Medicine

    Internship Hospital, 1986

  • Columbia University Vagelos College Of Physicians And Surgeons

    Medical School, 1985

  • Haverford College, Haverford Pa

    Undergraduate School, 1975
American Board of Medical Specialties®
American Board of Obstetrics & Gynecology®
- 
Obstetrics & Gynecology
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.

Healthgrades receives board action history for physicians and physician assistants. The information displayed here is sourced from independent information providers, such as state board websites, and may not be the most up-to-date information. Healthgrades makes no representations with respect to the accuracy of any information provided here and assumes no responsibility or liability for such information.

Learn more about medical license public record check

  • English

  • Spanish

Dr. Brennan is a Healthgrades Choice provider in Obstetrics & Gynecology

    Read our methodology

    Focus on Breast Cancer

    Locations

    Practice

    Office220 Pacific St Brooklyn, NY 11201
    1

    Affiliated Hospitals

    • Newyork-Presbyterian Brooklyn Methodist Hospital

      506 6th St
      Brooklyn, NY 11215
      Recipient of 17
      hospital awards

      Patient Safety Excellence Award™ (2025, 2024, 2023)

      Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

      Labor and Delivery Excellence Award™ (2023, 2022, 2021)

      Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

      View all awards

      How patients felt about the care they received at this hospital.

      81%
      Patients said they were given information about recovering at home

      3% lower than the national average

      75%
      Patients said that doctors always listened to them and explained things well

      1% lower than the national average

      View all patient feedback

    • Lenox Hill Hospital

      100 E 77th St
      New York, NY 10075
      Recipient of 42
      hospital awards

      America's 100 Best Hospitals Award™ (2025, 2024, 2023)

      Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

      America's 250 Best Hospitals Award™ (2025, 2024, 2023)

      Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

      View all awards

      How patients felt about the care they received at this hospital.

      84%
      Patients said they were given information about recovering at home
      79%
      Patients said that doctors always listened to them and explained things well

      3% higher than the national average

      View all patient feedback
    Learn more about how Healthgrades measures Hospital Quality