Keystone Medical PC
NPI 1508677873 · Gastroenterology Physician · Bayside, NY
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Keystone Medical PC is a Gastroenterology Physician organization in Bayside, NY (NPI 1508677873).
Provider details
- NPI number
- 1508677873
- Entity type
- Organization
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Won Sohn, President(718) 428-5333
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
1 yr 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
- 2025-01-16
- Last updated
- 2025-01-16
- Certified
- 2025-01-16
Frequently asked questions
- What is Keystone Medical PC's NPI number?
- Keystone Medical PC's National Provider Identifier (NPI) is 1508677873, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Keystone Medical PC?
- Keystone Medical PC is classified in the NPPES registry as Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Keystone Medical PC located?
- Keystone Medical PC's practice location on file with NPPES is 21333 39th Ave Ste 248, Bayside, NY 11361-2092.
- What is Keystone Medical PC's phone number?
- The practice phone number listed in the NPPES registry for Keystone Medical PC is (718) 428-5333.
- Does Keystone Medical PC accept Medicare?
- Keystone Medical PC 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 Keystone Medical PC?
- The authorized official listed on Keystone Medical PC's NPPES record is Won Sohn, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Keystone Medical PC's NPI active?
- Yes — Keystone Medical PC's NPI (1508677873) is active in the NPPES registry as of the last update on 2025-01-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.