Thomas A. Flanagan, MD
Psychiatry Physician · San Diego, CA
Thomas A. Flanagan, MD is a psychiatry physician with a practice address in San Diego, California, and NPI 1154361061, issued on Jun 8, 2006. Check the license (California G24638, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Thomas A. Flanagan
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- G24638 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5353 Mission Center RD, San Diego, CA 92108
- Phone
- (619) 688-5855
- Enumerated
- Jun 8, 2006
- Record last updated
- Sep 7, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (619) 291-3310
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 5353 Mission Center RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joanne Camille Castro, FNP-BCNurse Practitioner1154249472
- Komal Deokule, PT.,MSC.PT.,CCSPhysical Therapist1134474877
- Gary Eaton, MDPsychiatry Physician1962442996
- Matthew Koch, MFTMarriage & Family Therapist1942443890
- Fernando Kwiatkowski, MDPsychiatry Physician1346297249
- Michel Langis, PTPhysical Therapist1457578502
Verify Thomas A. Flanagan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G24638Check 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 psychiatry physician in 2024
12 Medicare Part D claims, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
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.
Thomas A. Flanagan among 8,673 psychiatry physician records in California
Thomas A. Flanagan, MD is one of 8,673 psychiatry physician records with a practice address in California. 67% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 67% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2016 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in California
There are 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in San Diego → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Michael Bailey, M.D.San Diego, CA 921081891885653
- Karen Brown, M.D.San Diego, CA 921081033133210
- Matthew Carroll, M.D.San Diego, CA 921081225139314
- Ruchira Densert, MDSan Diego, CA 921081538148697
- Gary Eaton, MDSan Diego, CA 921081962442996
- Joshua Golden, M.D., F.A.P.A.San Diego, CA 921081720008998
- Fernando Kwiatkowski, MDSan Diego, CA 921081346297249
- John Lowry, DOSan Diego, CA 921081477661619
Common questions
What is Thomas A. Flanagan, MD's NPI number?
Thomas A. Flanagan, MD's National Provider Identifier (NPI) is 1154361061, issued on Jun 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas A. Flanagan, MD located?
The NPPES record lists a practice address at 5353 Mission Center RD, San Diego, CA, 92108. Phone: (619) 688-5855. Providers update this record themselves, so call before visiting.
How can I verify Thomas A. Flanagan, MD's license?
NPPES lists California license number G24638, 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.
How much does Thomas A. Flanagan, MD prescribe under Medicare Part D?
In 2024, Thomas A. Flanagan, MD had 12 Medicare Part D claims; the average among psychiatry physician prescribers was 1,000. 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.