John Thorson, MD, PHD
NPI 1225120454 · Clinical Pathology/Laboratory Medicine Physician · San Diego, CA
John Thorson, MD, PHD is a Clinical Pathology/Laboratory Medicine Physician provider in San Diego, CA (NPI 1225120454).
Provider details
- NPI number
- 1225120454
- Entity type
- Individual
- Primary specialty
- Clinical Pathology/Laboratory Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 2006023097 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
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
- 2006-09-28
- Last updated
- 2009-02-12
Frequently asked questions
- What is John Thorson's NPI number?
- John Thorson's National Provider Identifier (NPI) is 1225120454, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Thorson's specialty?
- John Thorson is listed in the NPPES registry with a primary specialty of Clinical Pathology/Laboratory Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Thorson located?
- John Thorson's practice location on file with NPPES is 200 W Arbor Dr, San Diego, CA 92103-9001.
- What is John Thorson's phone number?
- The practice phone number listed in the NPPES registry for John Thorson is (619) 543-7874.
- Is John Thorson's NPI active?
- Yes — John Thorson's NPI (1225120454) is active in the NPPES registry as of the last update on 2009-02-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.