Summary

John Leff has practiced internal medicine and endocrinology, diabetes, and metabolism for 48 years. They earned their medical degree from State University of New York Downstate and see patients in Brooklyn, New York.

Overview based on verified provider data

Quick Facts

  • 4
  • 48 years of experience
  • 6 insurance plans accepted
  • speaks English
  • State University of New York Downstate
  • 2 specialties
  • 1 area of expertise
  • 2 office locations

Office Locations

Dr. John Leff has 2 locations

Dr. John Leff

150 55th StBrooklyn, NY 11220

Dr. John Leff

3414 Church AveBrooklyn, NY 11203

Compare with Similar Doctors

Dr. John Leff
Dr. Marzena Odorczuk, MD
Dr. Louis Morledge, MD
Dr. Shilpa Paradkar Singh, MD
Dr. John LeffDr. Marzena Odorczuk, MDDr. Louis Morledge, MDDr. Shilpa Paradkar Singh, MD
Internal MedicineInternal MedicineInternal MedicineInternal Medicine
Accepts New Patients Accepts New Patients Accepts New Patients
4 
4.6 
3.5 
4.9 
48 Years of Experience 31 Years of Experience 36 Years of Experience 25 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English Speaks English Speaks English Speaks English, Hindi
Brooklyn , NYTotowa , NJNew York , NYNew York , NY
Med School: State University of New York Downstate Med School: St. George University Med School: New York Medical College Med School: Maulana Azad Medical College
Current Profile
View Profile View Profile View Profile

Insurance Plans Accepted by Dr. John Leff

  • Aetna Better Health
  • Elderplan
  • Fidelis Care (NY)
  • HealthFirst (NY)
  • Medicaid - Medicaid
  • Medicaid - Medicaid (Managed)

Medical Specialties

Dr. John Leff has the following 2 specialties

Specialty Expertise

Dr. John Leff has the following area of expertise

  • Endocrinology, Diabetes & Metabolism

Certifications, License, & Education

48 Years Experience

Education & Training

Medical School

Graduated from State University of New York Downstate in 1978.

NPI Number

Dr. Leff's NPI number is 1689693327.

Similar Doctors

Frequently Asked Questions

Is Dr. John Leff accepting new patients?
Dr. John Leff has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
How can I make an appointment with Dr. John Leff?
You can find contact information for Dr. John Leff here on Vitals.
What languages does Dr. John Leff speak?
Dr. John Leff speaks English.
Does Dr. John Leff accept my insurance?
You can see the insurance plans that Dr. John Leff accepts on their Vitals profile.
Where is Dr. John Leff's office located?
Dr. John Leff's office is located at 150 55th St, Brooklyn, NY, 11220.

Data Sources

This provider profile is built using data from:

  • NPPES NPI Registry
  • State medical licensing boards

Ensuring Data Transparency and Trust: A Guide to Vitals Doctor Listings and Reviews

Our provider data is gathered directly from physicians and publicly available databases. Providers who verify their profiles gain the ability to update information, offering additional details about their specialties,education, treated conditions, performed procedures, and accepted insurances.

Reviews on Vitals are submitted by users only. Recognizing the valuable insights these reviews offer into a doctor's reputation, we maintain internal policies and protocols to ensure the quality and accuracy of all reviews. Importantly, providers cannot delete or alter reviews independently. Reviews can only be deleted or changed following an internal assessment by our customer service team.

Your feedback is highly valued and we encourage you to contact our support team should you encounter any issues.