John Welsh, M.D.
NPI 1548393044 · Physical Medicine & Rehabilitation Physician · Los Altos, CA
John Welsh, M.D. is a Physical Medicine & Rehabilitation Physician organization in Los Altos, CA (NPI 1548393044).
Provider details
- NPI number
- 1548393044
- Entity type
- Organization
- Primary specialty
- Physical Medicine & Rehabilitation PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Victoria Zapien, Office Manager(650) 941-1040
- License
- G80415 (CA)
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
- 2007-03-13
- Last updated
- 2014-03-17
Frequently asked questions
- What is John Welsh, M.D.'s NPI number?
- John Welsh, M.D.'s National Provider Identifier (NPI) is 1548393044, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is John Welsh, M.D.?
- John Welsh, M.D. is classified in the NPPES registry as Physical Medicine & Rehabilitation Physician (Allopathic & Osteopathic Physicians).
- Where is John Welsh, M.D. located?
- John Welsh, M.D.'s practice location on file with NPPES is 851 Fremont Ave, Los Altos, CA 94024-5698.
- What is John Welsh, M.D.'s phone number?
- The practice phone number listed in the NPPES registry for John Welsh, M.D. is (650) 941-1040.
- Who is the authorized official for John Welsh, M.D.?
- The authorized official listed on John Welsh, M.D.'s NPPES record is Victoria Zapien, Office Manager. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is John Welsh, M.D.'s NPI active?
- Yes — John Welsh, M.D.'s NPI (1548393044) is active in the NPPES registry as of the last update on 2014-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.