John Welsh, MD, PHD
NPI 1093042830 · Anatomic Pathology & Clinical Pathology Physician · San Diego, CA
John Welsh, MD, PHD is a Anatomic Pathology & Clinical Pathology Physician provider in San Diego, CA (NPI 1093042830).
Provider details
- NPI number
- 1093042830
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A64058 (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
16 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
- 2009-11-16
- Last updated
- 2022-07-11
- Certified
- 2022-07-11
Frequently asked questions
- What is John Welsh's NPI number?
- John Welsh's National Provider Identifier (NPI) is 1093042830, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Welsh's specialty?
- John Welsh is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is John Welsh located?
- John Welsh's practice location on file with NPPES is 6340 Sequence Dr, San Diego, CA 92121-4356.
- What is John Welsh's phone number?
- The practice phone number listed in the NPPES registry for John Welsh is (619) 209-1910.
- Is John Welsh's NPI active?
- Yes — John Welsh's NPI (1093042830) is active in the NPPES registry as of the last update on 2022-07-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.