Gregory Welsh, MD
NPI 1982600342 · Hospitalist Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Welsh, MD is a Hospitalist Physician provider in Stanford, CA (NPI 1982600342).
Provider details
- NPI number
- 1982600342
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- C167888 (CA)
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
20 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
- 2005-06-21
- Last updated
- 2024-04-28
- Certified
- 2024-04-28
Frequently asked questions
- What is Gregory Welsh's NPI number?
- Gregory Welsh's National Provider Identifier (NPI) is 1982600342, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Welsh's specialty?
- Gregory Welsh is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Welsh located?
- Gregory Welsh's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Gregory Welsh's phone number?
- The practice phone number listed in the NPPES registry for Gregory Welsh is (650) 723-4000.
- Does Gregory Welsh accept Medicare?
- Gregory Welsh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Welsh's NPI active?
- Yes — Gregory Welsh's NPI (1982600342) is active in the NPPES registry as of the last update on 2024-04-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.