Dr. John Leff, MD

Save

Endocrinology, Diabetes & Metabolism | Male

Dr. John Leff, MD
Dr. John Leff, MD is an endocrinology, diabetes & metabolism doctor who practices in Brooklyn, NY. He is 69 years old and has been practicing for 39 years. Dr. Leff is affiliated with Montefiore Medical Center.

Learn about this doctor

Dr. Leff's Experience

0ExperienceMatch
Experience Match

See how Dr. Leff's experience matches your preferences.

1
Specialties

For the best healthcare for your needs, choose a doctor who specializes in your medical condition.

1
Board Certifications

Board certification indicates that a doctor is highly qualified in the medical field in which they practice.

56
Conditions Treated

Check to see that this provider treats your medical condition.

1
Procedures Performed

Check to see that this provider performs the procedure that you need.

Background Check

Check to see if your provider has any malpractices, board actions, or sanctions.

Education

Learn more about where this provider went to medical school, residency, and more.

Awards & Recognition

View information about special awards and recognition for this provider.

Languages Spoken

Check to see what languages this provider and/or staff speak.

Memberships & Professional Affiliations

View memberships and affiliations associated with this provider.

Visiting Dr. Leff

Dr. Leff accepts 15 insurance carriers

Dr. Leff is now accepting new patients

Affiliated Hospitals

Hospital Quality
Check out the quality of care at the 1 hospitals where Dr. Leff has admitting privileges.

Dr. Leff's Reviews

Help millions of people find the right doctor. Share your experience today!
Are you Dr. Leff?
Make it easy for patients to share their feedback. Also manage your personalized profile!

Compare Dr. Leff

Compare this Doctor
View other doctors with similar experience to find the right doctor for you.
View all 10 matches

Dr. Leff's experience matches your search based on the following criteria:

  •  Based on total number of patients treated over the last 12 months
  •  Specializes in Endocrinology, Diabetes & Metabolism
  •  Board certified in Diabetes, Metabolism & Endocrinology
  •  No malpractice claims found
  •  No sanctions found
  •  No board actions found

Awards & Recognition

  • Awards & Honors
    • Healthgrades Honor Roll
    What is a recognized doctor
  • Media & Publications

    Dr. Leff has no media or publications listed.

Background Check

  • 0
    Malpractice Claims

    No malpractice history found for New York.

    What is medical malpractice
  • 0
    Sanctions

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

    What is a sanction or disciplinary action
  • 0
    Board Actions

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

    What are board actions

Board Certifications

Why It Matters: Dr. Leff's Board Certifications

Board certification should be one of your top considerations when choosing a doctor. Board certification is an official recognition given to doctors who have met specific requirements set by national medical specialty boards in the... More

  • Diabetes, Metabolism & Endocrinology

Conditions Treated

  • Abnormal Thyroid
  • Acromegaly and Gigantism
  • Adrenal Gland Diseases
  • Adrenal Incidentaloma
  • Adrenal Insufficiency
  • Autoimmune Diseases
  • Autoimmune Thyroid Diseases
  • Benign Tumor
  • Bone Disorders
  • Breast Diseases
  • Calcium Metabolism Disorders
  • Cancer
  • Congenital Adrenal Hyperplasia (CAH)
  • Craniopharyngioma
  • Cushing's Syndrome
  • Diabetes Insipidus
  • Diabetes Type 1
  • Diabetes Type 2
  • Diabetic Macular Edema (DME)
  • Diabetic Retinopathy
  • Female Infertility
  • Gestational Diabetes
  • Goiter
  • Graves' Disease
  • Hashimoto's Disease
  • Hypercalcemia
  • Hyperkalemia
  • Hyperlipidemia
  • Hyperparathyroidism
  • Hyperthyroidism
  • Hypoglycemia
  • Hypokalemia
  • Hypopituitarism
  • Hyposmolality and Hyponatremia
  • Hypothyroidism
  • Kidney Disease
  • Lipid Disorders
  • Menstrual Disorders (incl. Dysmenorrhea)
  • Obesity
  • Osteopenia
  • Osteoporosis
  • Overweight
  • Parathyroid (Gland) Disease
  • Polycystic Ovarian Syndrome
  • Pregestational Diabetes Mellitus
  • Pregnancy-Related Disorders
  • Proteinuria
  • Retina Diseases
  • Symptomatic Menopause
  • Testicular Dysfunction
  • Thyroid Cancer
  • Thyroid Cyst
  • Thyroid Disease
  • Thyroiditis
  • Turner Syndrome
  • Vitamin D Deficiency

Education

  • Medical School
    SUNY Downstate Medical Center College Of Medicine

    Graduated in 1978

  • Internship Hospital
    Staten Island Hospital

    Completed in 1979

  • Residency Hospital
    Staten Island Hospital

    Completed in 1981

  • Fellowship Hospital
    Joslin Diab Ctr/New Deaconess Hospital

    Completed in 1987

    SUNY Downstate Med Center

    Completed in 1983

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 free profile.

Specialties

  • Endocrinology, Diabetes & Metabolism

Procedures Performed

  • Diabetes Counseling