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

Individual provider Hematology & Oncology Physician · NPI 1558453423

Stephen Feffer, MD is a Hematology & Oncology Physician in East Rockaway, New York. Licensed in New York. Registered with an NPI since 2006.

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

26 Arnold Ct
East Rockaway, NY 11518-1624
Phone: (516) 569-8659
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence 106508 (NY)

Record details

NPI number1558453423
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 29, 2006
Last updated in NPPESJune 19, 2013