Sheldon Greenspan, MD
NPI 1508836370 · Adult Medicine Physician · Williston Park, NY
Sheldon Greenspan, MD is a Adult Medicine Physician provider in Williston Park, NY (NPI 1508836370).
Provider details
- NPI number
- 1508836370
- Entity type
- Individual
- Primary specialty
- Adult Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 170066 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-01-25
- Last updated
- 2007-07-27
Frequently asked questions
- What is Sheldon Greenspan's NPI number?
- Sheldon Greenspan's National Provider Identifier (NPI) is 1508836370, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sheldon Greenspan's specialty?
- Sheldon Greenspan is listed in the NPPES registry with a primary specialty of Adult Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sheldon Greenspan located?
- Sheldon Greenspan's practice location on file with NPPES is 637 Willis Ave, Williston Park, NY 11596-1154.
- What is Sheldon Greenspan's phone number?
- The practice phone number listed in the NPPES registry for Sheldon Greenspan is (516) 741-6111.
- Is Sheldon Greenspan's NPI active?
- Yes — Sheldon Greenspan's NPI (1508836370) is active in the NPPES registry as of the last update on 2007-07-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.