JL
41 Years of Experience
Accepting patients
Who is Dr. Leff, Endocrinologist in Brooklyn, NY?
Dr. John Leff, MD is an Endocrinologist, who primarily practices in Brooklyn, NY. He has been practicing for over 41 years and is board certified. Dr. Leff completed his residency at Deaconess Hosp, Diabetes; Kings County Hosp Ctr, Endocrinology, Diabetes & Metabolism; Staten Island Univ Hosp, Internal Medicine. Dr. Leff is fluent in English, and is currently seeing new patients. To book an appointment or to confirm insurance options, please call Dr. Leff’s office at (718) 630-7369.
Where did Dr. Leff go to medical school and complete their residency?
Residency: Deaconess Hosp, Diabetes; Kings County Hosp Ctr, Endocrinology, Diabetes & Metabolism; Staten Island Univ Hosp, Internal Medicine
Medical School: Suny-Hlth Sci Ctr At Brooklyn, Coll of Med, Brooklyn Ny | SUNY Downstate Medical Center College Of Medicine
Is Dr. Leff board certified as an Endocrinologist?
Yes, Dr. John Leff, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Leff speak?
Dr. Leff and their clinical team can communicate with patients in the following languages:
English
What conditions does an Endocrinologist like Dr. Leff typically treat?
As an Endocrinologist, conditions treated by Dr. John Leff may include:
- Addison's Disease
- Graves' Disease
- High Cholesterol
- Hyperphosphatemia
- Hyperthyroidism
- Hypophosphatasia
- Klinefelter Syndrome
- Prader Willi Syndrome
Please contact Dr. Leff's office directly to confirm care for your specific condition, for more information, or to schedule a consultation.
What procedures does an Endocrinologist like Dr. Leff typically perform?
As an Endocrinologist, procedures performed by Dr. John Leff may include:
- Adrenal Surgery
- Comparative Genomic Hybridization
- D and C / Vacuum Aspiration
- Diabetes Blood Sugar Management
- Diabetes Care - Kidney Disease Monitoring
- Diabetes Consultation
- Doppler Ultrasound
- Egg Freezing/ Fertility Preservation
Please contact Dr. Leff's office directly to confirm care for your specific procedure, for more information, or to schedule a consultation.
Does Dr. Leff accept my insurance?
Please contact Dr. Leff's office to confirm accepted insurance plans.
Where is Dr. Leff's office located?
What is Dr. Leff's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Leff's National Provider Identifier (NPI) number is 1689693327.
What common questions do patients ask about Dr. Leff?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Leff
What is Dr. John Leff's specialty?
Dr. Leff is a Endocrinologist near Brooklyn, NY.
What does an Endocrinologist do?
An internist specializing in disorders of the endocrine glands, including the thyroid and adrenal glands. This specialist also manages a range of conditions such as diabetes, metabolic and nutritional disorders, obesity, pituitary disorders, and menstrual and sexual health issues.
Is this Dr. John Leff affiliated with a ranked Castle Connolly Top Hospital?
No, Leff is not affiliated with a Castle Connolly Top Hospital. Castle Connolly Top Hospitals are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
When to see an Endocrinologist?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see an Endocrinologist. Explore insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is John Leff accepting new patients in Brooklyn, NY?
Yes, Dr. John Leff is accepting new patients at this time.
Does Dr. John Leff offer online booking?
Please contact Dr. Leff's office at (718) 630-7369 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with John Leff?
Please contact Dr. Leff's office at (718) 630-7369 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. John Leff have?
Dr. John Leff is certified by the American Board of Internal Medicine.
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