Sullivan Internal Medicine Group, P.C.
NPI 1841295474 · Internal Medicine Physician · Monticello, NY
Sullivan Internal Medicine Group, P.C. is a Internal Medicine Physician organization in Monticello, NY (NPI 1841295474).
Provider details
- NPI number
- 1841295474
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Sheldon Leidner, President(845) 794-1600
- License
- W00071 (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
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
- 2020-08-22
Frequently asked questions
- What is Sullivan Internal Medicine Group, P.C.'s NPI number?
- Sullivan Internal Medicine Group, P.C.'s National Provider Identifier (NPI) is 1841295474, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Sullivan Internal Medicine Group, P.C.?
- Sullivan Internal Medicine Group, P.C. is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sullivan Internal Medicine Group, P.C. located?
- Sullivan Internal Medicine Group, P.C.'s practice location on file with NPPES is 518 Broadway, Monticello, NY 12701-1157.
- What is Sullivan Internal Medicine Group, P.C.'s phone number?
- The practice phone number listed in the NPPES registry for Sullivan Internal Medicine Group, P.C. is (845) 794-1600.
- Who is the authorized official for Sullivan Internal Medicine Group, P.C.?
- The authorized official listed on Sullivan Internal Medicine Group, P.C.'s NPPES record is Sheldon Leidner, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Sullivan Internal Medicine Group, P.C.'s NPI active?
- Yes — Sullivan Internal Medicine Group, P.C.'s NPI (1841295474) is active in the NPPES registry as of the last update on 2020-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.