Stuart Greenstein, MD
NPI 1942382114 · Surgery Physician · Valhalla, NY
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stuart Greenstein, MD is a Surgery Physician provider in Valhalla, NY (NPI 1942382114).
Provider details
- NPI number
- 1942382114
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 162733 (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
19 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
- 2006-10-19
- Last updated
- 2023-05-31
- Certified
- 2023-05-31
Frequently asked questions
- What is Stuart Greenstein's NPI number?
- Stuart Greenstein's National Provider Identifier (NPI) is 1942382114, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stuart Greenstein's specialty?
- Stuart Greenstein is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Stuart Greenstein located?
- Stuart Greenstein's practice location on file with NPPES is 100 Woods Rd Fl Acp3, Valhalla, NY 10595-1530.
- What is Stuart Greenstein's phone number?
- The practice phone number listed in the NPPES registry for Stuart Greenstein is (914) 493-8916.
- Does Stuart Greenstein accept Medicare?
- Stuart Greenstein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stuart Greenstein's NPI active?
- Yes — Stuart Greenstein's NPI (1942382114) is active in the NPPES registry as of the last update on 2023-05-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.