Thomas William Harris, M.D.
Specialist · San Diego, CA
Thomas William Harris, M.D. is a specialist with a practice address in San Diego, California, and NPI 1316056492, issued on Aug 30, 2006. Check the license (California C35639, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Thomas William Harris
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- C35639 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3444 Kearny Villa RD Ste 202, San Diego, CA 92123
- Phone
- (858) 874-3444
- Enumerated
- Aug 30, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest specialist records → All 5,749 in California → Look up another NPI →
Also registered at 3444 Kearny Villa RD Ste 202
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Melanie McGilloway, NPNurse Practitioner1366921322
- Iskren Puhlev, FNPFamily Nurse Practitioner1437493160
- Marcela Vega, PA-CPhysician Assistant1548155427
Verify Thomas William Harris in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license C35639Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average specialist in 2024
14 Medicare Part D claims, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $46.30
1 payment: food and beverage; the largest payer was Smith+Nephew, Inc. The 5,844 providers of this specialty with any payment received $4,760.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Thomas William Harris among 5,749 specialist records in California
Thomas William Harris, M.D. is one of 5,749 specialist records with a practice address in California. 30% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 60% newer
- In a Medicare fileYes · 30% of these records are
- In the CMS Doctors and Clinicians fileNo · 19% of these records are
- Record last updated2007 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Specialist providers in California
There are 5,749 specialist records in California.
All 5,749 in California → Every provider in San Diego → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- John Cleary, M.D.San Diego, CA 921231265523740
- Mansour Cohen, MDSan Diego, CA 921231346225356
- Roquette Dungan, LCSWSan Diego, CA 921231629195052
- Douglas Ebbers, M.S. IN ED.San Diego, CA 921231861678633
- John Hodapp, MDSan Diego, CA 921231366459737
- Eli Meltzer, M.D.San Diego, CA 921231780602300
- Veronica MillerSan Diego, CA 921231932344033
- Annie OcampoSan Diego, CA 921231851514749
Common questions
What is Thomas William Harris, M.D.'s NPI number?
Thomas William Harris, M.D.'s National Provider Identifier (NPI) is 1316056492, issued on Aug 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas William Harris, M.D. located?
The NPPES record lists a practice address at 3444 Kearny Villa RD Ste 202, San Diego, CA, 92123. Phone: (858) 874-3444. Providers update this record themselves, so call before visiting.
How can I verify Thomas William Harris, M.D.'s license?
NPPES lists California license number C35639, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Thomas William Harris, M.D. prescribe under Medicare Part D?
In 2024, Thomas William Harris, M.D. had 14 Medicare Part D claims; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. 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.