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Dr. John Leonard, MD

Dr. John Leonard, MD

Medical Oncology M
(93) 93 reviews

Telehealth available

Dr. John Leonard, MD is a Medical Oncology Specialist in New York, NY. Dr. Leonard studied at University of Virginia / Main Campus|University of Virginia School of Medicine. Dr. Leonard is board certified in Hematology and accepts accepts multiple insurance plans.




  • Newyork-Presbyterian Hospital-Weill Cornell Medical Center, Fellowship Hospital — 1995
  • Newyork-Presbyterian Hospital-Weill Cornell Medical Center, Internship Hospital — 1991
  • University of Virginia / Main Campus|University of Virginia School of Medicine, Medical School — 1990

Insurance Accepted

  • Aetna
  • Affinity Health Plan
  • Amerihealth
  • Amida Care
  • Anthem
  • Blue Cross Blue Shield
  • CareFirst Blue Cross Blue Shield
  • Cigna
  • CoreSource
  • EmblemHealth
  • Empire Blue Cross Blue Shield
  • Fidelis Care
  • Healthfirst
  • Medicaid
  • Medicare
  • Oxford Health Plans
  • POMCO Group
  • UnitedHealthCare
  • VNS Choice
  • WellCare

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May 26, 2023
Dr. Leonard listens to your concerns, evaluates your situation and responded to my concerns. Works with you to determine next steps. After 15 years he still does not presume I will want a course of action but has a conversation with me about possible steps. He also listens to my wife when she joins me for visits.
— May 26, 2023
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Hospital Affiliations

  • NewYork-Presbyterian/Weill Cornell Medical Center

Frequently Asked Questions

Find contact information here to make an appointment.

A list of accepted insurance providers is available on the Sharecare insurance check. It is always a good idea to verify your insurance when making an appointment.

New patients are generally accepted by Dr. John Leonard, MD. To arrange an appointment, call the number on Dr. Leonard's profile.

Dr. Leonard frequently treats the following conditions: Non-Hodgkin's Lymphoma, Lymphosarcoma and Hodgkin's Disease. See more on Sharecare.

Dr. John Leonard, MD is affiliated with NewYork-Presbyterian/Weill Cornell Medical Center.

Yes, Dr. John Leonard, MD holds board certification in Hematology.

Dr. Leonard has over 33 years of healthcare experience.


    1. 1
      520 East 70th Street Starr Pavilion, 3rd Floor, New York, NY 10021 Existing Patients: (845) 280-6685
Dr. John Leonard, MD

Dr. John Leonard, MD


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