Gregory McWilliams, M.D.
Internal Medicine
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Gregory McWilliams, M.D.

Internal Medicine

Profile Photo of Gregory McWilliams, M.D.
Not Accepting New Patients
Gender: Male
Language: English


Personal Statement

I am thrilled to work at Weill Cornell as an attending physician after completing my residency here in Internal Medicine. This role embodies what I enjoy most about primary care medicine: thinking broadly about a patient’s symptoms to come to an accurate diagnosis, coordinating care with multiple specialists for patients with complex medical needs, and developing sincere, long-term relationships with my patients. Although I enjoy taking care of any medical concerns patients bring to me, my specific clinical interests include: preventative medicine, LGBT health, HIV pre-exposure prophylaxis (PrEP), and mental health in the primary care setting.

Specialties and Expertise


  • Primary Care Internist


  • Primary Care
  • LGBT Health Care


Dr. McWilliams is originally from upstate New York. He went to college at Harvard University, where he graduated cum laude in Biology with a minor in Spanish. He earned his medical degree from Georgetown University School of Medicine and completed his residency training in Internal Medicine with a focus in Primary Care at New York-Presbyterian Weill Cornell Medical Center. Dr.McWilliams has a particular interest in LGBT medicine. He lives in New York City with his partner Scott and his rescue dog Mango. He enjoys traveling, skiing, and playing the piano.



Clinical and Academic Positions

  • Assistant Attending Physician - NewYork-Presbyterian Hospital
  • Instructor in Medicine - Weill Cornell Medical College, Cornell University

Education and Training

  • M.D., Georgetown University School of Medicine, 2017
  • B.A., Harvard College, 2009


Insurance Plans Accepted

The following represents most of the managed care plans accepted by this doctor. If your insurance carrier does not appear here please contact the doctor’s office as they may have individual contracts not included on this site.

* indicates this doctor is no longer accepting new patients with this insurance plan.

  • Aetna Weill Cornell Employee Managed Care Plan
  • Aetna Weill Cornell Employee PPO Plan
  • Aetna-NYP - EPO/POS
  • Empire Blue Cross/Blue Shield - Mediblue (Senior)
  • Empire Blue Cross/Blue Shield - PPO
  • Empire Blue Cross/Blue Shield - HMO
  • Empire Blue Cross/Blue Shield - EPO
  • Empire Blue Cross/Blue Shield - Blue Access
  • * Medicaid
  • * Medicare
  • Oxford Health Plans - Freedom
  • Oxford Health Plans - Liberty
  • Oxford Health Plans - Metro/Core/Charter
  • Rockefeller University - Trustmark
  • United Empire
  • United Healthcare
  • United Healthcare Compass
  • WorldWide Medical

Locations and Appointments

External Relationships

External Relationships

Relationships and collaborations with for-profit and not-for profit organizations are of vital importance to our faculty because these exchanges of scientific information foster innovation. As experts in their fields, WCM physicians and scientists are sought after by many organizations to consult and educate. WCM and its faculty make this information available to the public, thus creating a transparent environment.

No External Relationships Reported