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Dr. Hillary Diamond, MD


Professional statement

Serving multiple locations across New York, Dr. Hillary Diamond is excited to bring her knowledge to Medical Associates P.C. She is skilled with the intricacies of internal medicine and strives to treat each patient to the best of her ability while ensuring that both patients and their loved ones comprehend the different possible methods of treatment. Dr. Diamond received her medical degree from the State University of New York, Stony Brook. She then completed an internship in internal medicine at Winthrop-University Hospital, followed by a residency in internal medicine at New York Methodist Hospital. Furthermore, she completed a fellowship in geriatric medicine at Long Island Jewish Medical Center and also holds certification in geriatric medicine from the American Board of Internal Medicine. Dr. Diamond encourages personal responsibility in healthcare which includes attention to health maintenance as well as interactive decision making during times of illness. She holds active memberships in the American College of Physicians, American Geriatrics Society, and the American Public Health Association.

In-network insurances

  • 1199SEIU
  • AARP
  • Aetna


  • Internist

Practice names

Board certifications

  • Geriatric Medicine (Internal Medicine)

Education and training

  • Medical School - State University of New York, Stony Brook, Doctor of Medicine
  • New York Methodist Hospital, Residency in Internal Medicine

Zocdoc awards

Rapid registration
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Speedy response

Languages spoken

  • English

Provider's gender


NPI number


Office locations

Medical Associates P.C.


325 E Main St

Northport, NY 11768

Medical Associates P.C.

Mount Sinai

5499 Nesconset Highway

Mount Sinai, NY 11766

Medical Associates P.C.


243 Boyle Road

Selden, NY 11784

Medical Associates P.C.


214-22 73rd Avenue

Oakland Gardens, NY 11364

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