Sheldon Leidner, MD
NPI 1649275280 · Gastroenterology Physician · Monticello, NY
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sheldon Leidner, MD is a Gastroenterology Physician provider in Monticello, NY (NPI 1649275280).
Provider details
- NPI number
- 1649275280
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 116318 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
21 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
- 2005-06-20
- Last updated
- 2023-03-07
Frequently asked questions
- What is Sheldon Leidner's NPI number?
- Sheldon Leidner's National Provider Identifier (NPI) is 1649275280, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sheldon Leidner's specialty?
- Sheldon Leidner is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Sheldon Leidner located?
- Sheldon Leidner's practice location on file with NPPES is 518 Broadway, Monticello, NY 12701-1157.
- What is Sheldon Leidner's phone number?
- The practice phone number listed in the NPPES registry for Sheldon Leidner is (845) 794-1600.
- Does Sheldon Leidner accept Medicare?
- Sheldon Leidner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sheldon Leidner's NPI active?
- Yes — Sheldon Leidner's NPI (1649275280) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.