Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Jill Brett Feffer, MD

Individual provider Endocrinology, Diabetes & Metabolism Physician · NPI 1588906267

Jill Brett Feffer, MD is an Endocrinology in Elmhurst, New York. Qualified in 2013, 13 years ago. Practices with Icahn School of Medicine at Mount Sinai, a 324-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
13
Licensed in
NY
In the registry since
2013
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

7901 Broadway
Elmhurst, NY 11373-1329
Phone: (718) 334-3951
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence 276609 (NY)

Record details

NPI number1588906267
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 20, 2013
Last updated in NPPESJune 30, 2025
Certification dateJune 30, 2025
Mailing address7901 Broadway, Elmhurst, NY 11373-1329

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyENDOCRINOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2013 (13 years in practice)
Group practice Icahn School Of Medicine At Mount Sinai — 324 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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