West Side Medical Group, P.C.
NPI 1265553622 · Internal Medicine Physician · New York, NY
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
West Side Medical Group, P.C. is a Internal Medicine Physician organization in New York, NY (NPI 1265553622).
Provider details
- NPI number
- 1265553622
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- John Dellosso, Owner(212) 638-4000
- License
- 103415 (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
- 2007-04-03
- Last updated
- 2007-11-02
Frequently asked questions
- What is West Side Medical Group, P.C.'s NPI number?
- West Side Medical Group, P.C.'s National Provider Identifier (NPI) is 1265553622, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is West Side Medical Group, P.C.?
- West Side Medical Group, P.C. is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is West Side Medical Group, P.C. located?
- West Side Medical Group, P.C.'s practice location on file with NPPES is 314 W 14th St, New York, NY 10014-5002.
- What is West Side Medical Group, P.C.'s phone number?
- The practice phone number listed in the NPPES registry for West Side Medical Group, P.C. is (212) 438-6000.
- Does West Side Medical Group, P.C. accept Medicare?
- West Side Medical Group, P.C. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for West Side Medical Group, P.C.?
- The authorized official listed on West Side Medical Group, P.C.'s NPPES record is John Dellosso, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is West Side Medical Group, P.C.'s NPI active?
- Yes — West Side Medical Group, P.C.'s NPI (1265553622) is active in the NPPES registry as of the last update on 2007-11-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.