Dr. John Leff, MD

Dr. John Leff, MD

Endocrinology, Diabetes & Metabolism  ·  
Male  ·  
Age 69
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Dr. John Leff, MD is an endocrinology, diabetes & metabolism specialist in Brooklyn, NY and has been practicing for 31 years. He graduated from SUNY Downstate Medical Center College Of Medicine in 1978 and specializes in endocrinology, diabetes & metabolism.

150 55th St

Brooklyn, NY 11220

Contact Information

(718) 630-7942

Insurance Accepted

  • Cigna

*Please verify this information when scheduling an appointment.

Learn about Dr. Leff

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Top Care Areas

See how frequently Dr. Leff performs your care needs compared to other doctors.

Diabetes Type 2
very high
more than 99% of peers
Thyroid Disease
very high
more than 93% of peers
Hypothyroidism
high
more than 89% of peers

Dr. Leff's percentages are based on the rate of treatment compared to peers nationwide from insurance data. Learn more info about our data and this Top Care Areas component.

1  Specialties

  • Endocrinology, Diabetes & Metabolism

1  Board Certifications

  • Diabetes, Metabolism & Endocrinology
    Accredited by: American Board of Internal Medicine*

50  Conditions Treated

Less

Read Less

1  Procedures

  • Diabetes Counseling

Background Check

0 Malpractice Claims

No malpractice history found for New York.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.

Education

  • SUNY Downstate Medical Center College Of Medicine
    Medical School | Graduated 1978
  • Staten Island Hospital
    Internship Hospital | Completed 1979
  • Staten Island Hospital
    Residency Hospital | Completed 1981
  • Joslin Diab Ctr/New Deaconess Hospital
    Fellowship Hospital | Completed 1987
  • SUNY Downstate Med Center
    Fellowship Hospital | Completed 1983

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. Leff has no media or publications listed.

Languages Spoken

  • English

Memberships & Professional Affiliations

Dr. Leff does not have any memberships or affiliations listed. If you are Dr. Leff and would like to add memberships or affiliations, please update your profile.

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