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

Individual provider Internal Medicine Physician · NPI 1316931520

Dr. John Gian, MD practises Internal Medicine in Brooklyn, New York. Graduated from New York Medical College in 1998, 28 years ago. Practices with New York City Health and Hospitals Corporation, a 538-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
28
Trained at
New York Medical College
Licensed in
NY
In the registry since
2005
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

760 Broadway Woodhull Medical & Mental Health Ctr
Brooklyn, NY 11206 Not confirmed with CMS for 11 years — call before visiting
Phone: (718) 963-8000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 223263-1 (NY)

Record details

NPI number1316931520
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedSeptember 2, 2005
Last updated in NPPESApril 21, 2015

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolNEW YORK MEDICAL COLLEGE
Graduated 1998 (28 years in practice)
Group practice New York City Health And Hospitals Corporation — 538 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients11
Services billed 88 a service is one billed item, such as a visit, a test or a procedure
Average patient age59

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at New York City Health and Hospitals Corporation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 538 clinicians in the practice; 12 are shown here.

Other providers in Brooklyn