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

Individual provider Internal Medicine Physician · NPI 1548845399

Dr. Gehan Walid Mahmoud, MD is an Internal Medicine in Staten Island, New York. Qualified in 2020, 6 years ago. Practices with North Shore-Lij Medical PC, a 6,350-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in New York.

Years since qualifying
6
Licensed in
NY
In the registry since
2021
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

475 Seaview Ave
Staten Island, NY 10305-3436
Phone: (717) 226-6902
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 375 Seguine Ave, Staten Island, NY 10309-3932 — (718) 226-6902

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 335062 (NY)

Record details

NPI number1548845399
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 12, 2021
Last updated in NPPESJanuary 15, 2026
Certification dateJanuary 15, 2026

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2020 (6 years in practice)
Group practice North Shore-Lij Medical Pc — 6350 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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