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

Individual provider Pulmonary Disease Physician · NPI 1689638462

Dr. Alexander Boris Gelfer, MD is a Pulmonary Disease in Williamsville, New York. Qualified in 1972, 54 years ago. Practices with Rpci Oncology, PC, a 60-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in New York.

Years since qualifying
54
Licensed in
NY
In the registry since
2006
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

100 College Pkwy Ste 110
Williamsville, NY 14221
Phone: (716) 631-8863
Fax: (716) 631-1265
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • Elm And Carlton St, Buffalo, NY 14263-0001 — (716) 631-8863

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence 166540-2 (NY)

Record details

NPI number1689638462
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 17, 2006
Last updated in NPPESFebruary 13, 2025
Certification dateFebruary 13, 2025

Medicare enrollment

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

Medicare specialtyPULMONARY DISEASE
Medical schoolOTHER
Graduated 1972 (54 years in practice)
Group practice Rpci Oncology, Pc — 60 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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