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

Dr. Sheldon Alan Greenspan, MD

Individual provider Adult Medicine Physician · NPI 1508836370

Dr. Sheldon Alan Greenspan, MD is an Adult Medicine Physician in Williston Park, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

637 Willis Ave
Williston Park, NY 11596-1154
Phone: (516) 741-6111
Fax: (516) 741-7539
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Adult Medicine Physician (primary) Taxonomy 207QA0505X · Licence 170066 (NY)

Record details

NPI number1508836370
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJanuary 25, 2006
Last updated in NPPESJuly 27, 2007