John A. Thorson, MD, PHD
Clinical Pathology/Laboratory Medicine Physician · San Diego, CA
John A. Thorson, MD, PHD is a clinical pathology/laboratory medicine physician with a practice address in San Diego, California, and NPI 1225120454, issued on Sep 28, 2006. Check the license (California A82079, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- John A. Thorson
- Credential
- MD, PHD
- Primary taxonomy
- Clinical Pathology/Laboratory Medicine Physician 207ZP0105X
- License numbers
- A82079 CA
4301081249 MI
2006023097 MO
Self-reported in NPPES; status is on the state search - Practice location
- 200 W Arbor Dr, San Diego, CA 92103
- Phone
- (619) 543-7874
- Enumerated
- Sep 28, 2006
- Record last updated
- Feb 12, 2009 (not updated in 17 years: call before relying on the address or phone)
- Medicaid IDs
- # PENDING MO
4544083 MI - Entity
- Type 1 · individual
8 nearest clinical pathology/laboratory medicine physician records → All 131 in California → Look up another NPI →
Also registered at 200 W Arbor Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kristy AbelCertified Registered Nurse Anesthetist1962113035
- Paula Abeleda, NPFamily Nurse Practitioner1558945022
Verify John A. Thorson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A82079Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
John A. Thorson among 131 clinical pathology/laboratory medicine physician records in California
John A. Thorson, MD, PHD is one of 131 clinical pathology/laboratory medicine physician records with a practice address in California. 36% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than under 1% of them.
- NPI issued2006 · under 1% of these records are older, 55% newer
- In a Medicare fileNo · 36% of these records are
- In the CMS Doctors and Clinicians fileNo · 31% of these records are
- Record last updated2009 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0105X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Clinical Pathology/Laboratory Medicine Physician providers in California
There are 131 clinical pathology/laboratory medicine physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 131 in California → Every provider in San Diego → Clinical Pathology/Laboratory Medicine Physician nationwide →
The 8 clinical pathology/laboratory medicine physician records with the nearest ZIP codes
- Laura Dilly, M.D.San Diego, CA 921031942561212
- Oluwole Fadare, M.D.San Diego, CA 921031619955804
- Michael Kelner, M.D.San Diego, CA 921031174679849
- Thomas Lane, M.D.San Diego, CA 921031649224395
- Dzung Le, M.D.San Diego, CA 921031770526931
- Nicholas Protopsaltis, MD, PHDSan Diego, CA 921031275160632
- Saravanan Raju, MDSan Diego, CA 921031679199111
- Jack Bui, M.D., PH.D.La Jolla, CA 920931942529821
Common questions
What is John A. Thorson, MD, PHD's NPI number?
John A. Thorson, MD, PHD's National Provider Identifier (NPI) is 1225120454, issued on Sep 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John A. Thorson, MD, PHD located?
The NPPES record lists a practice address at 200 W Arbor Dr, San Diego, CA, 92103. Phone: (619) 543-7874. Providers update this record themselves, so call before visiting.
How can I verify John A. Thorson, MD, PHD's license?
NPPES lists California license number A82079, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.