Bruce L. Thiessen, PH.D.
Clinical Psychologist · La Mesa, CA
Bruce L. Thiessen, PH.D. is a clinical psychologist with a practice address in La Mesa, California, and NPI 1841541984, issued on Sep 28, 2012. Check the license (California PSY14259, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Bruce L. Thiessen
- Credential
- PH.D.
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- PSY14259 CA
Self-reported in NPPES; status is on the state search - Practice location
- 8360 University Ave, La Mesa, CA 91942
- Phone
- (619) 713-2622
- Enumerated
- Sep 28, 2012
- Record last updated
- Sep 28, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20190415001912); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 12,647 in California → Look up another NPI →
Verify Bruce L. Thiessen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PSY14259Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Memory Check Psychological Services, A Professional CorporationCarlsbad, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Bruce L. Thiessen among 12,647 clinical psychologist records in California
Bruce L. Thiessen, PH.D. is one of 12,647 clinical psychologist records with a practice address in California. 9% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 63% of them.
- NPI issued2012 · 63% of these records are older, 33% newer
- In a Medicare fileYes · 9% of these records are
- In the CMS Doctors and Clinicians fileYes · 19% of these records are
- Graduated1990 · median 2006 among the 2,424 with a school on file
- Record last updated2012 · 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 103TC0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
35 clinical psychologist records list a practice address in La Mesa
They are 35 of the 2,168 NPPES records with a practice address in La Mesa, and 12,647 clinical psychologist records in California.
All 12,647 in California → Every provider in La Mesa → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- James BullLa Mesa, CA 919421922194703
- Sharon Colgan, PHDLa Mesa, CA 919421881704484
- Karen Cross, PHDLa Mesa, CA 919421568550234
- David Duffy, PHDLa Mesa, CA 919421326244955
- Margaret Edel, PH.D.La Mesa, CA 919421700080132
- Marykay Fisher, PSY.D.La Mesa, CA 919421992889281
- Janet Murphy, PSYCHOLOGISTLa Mesa, CA 919421427102185
- Hugh Pates, PHDLa Mesa, CA 919421457468233
Common questions
What is Bruce L. Thiessen, PH.D.'s NPI number?
Bruce L. Thiessen, PH.D.'s National Provider Identifier (NPI) is 1841541984, issued on Sep 28, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Bruce L. Thiessen, PH.D. located?
The NPPES record lists a practice address at 8360 University Ave, La Mesa, CA, 91942. Phone: (619) 713-2622. Providers update this record themselves, so call before visiting.
How can I verify Bruce L. Thiessen, PH.D.'s license?
NPPES lists California license number PSY14259, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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.