Tracy D. Thiem, PH.D.
Clinical Psychologist · Petaluma, CA
Tracy D. Thiem, PH.D. is a clinical psychologist with a practice address in Petaluma, California, and NPI 1023307766, issued on Apr 4, 2011. Check the license (California 24037, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Tracy D. Thiem
- Credential
- PH.D.
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- 24037 CA
Self-reported in NPPES; status is on the state search - Practice location
- 7 4TH St, Petaluma, CA 94952
- Phone
- (707) 637-3022
- Enumerated
- Apr 4, 2011
- Record last updated
- Feb 13, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20150702002527); 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 →
Also registered at 7 4TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Dianna Grayer, MA, MFTMarriage & Family Therapist1649328865
- Laura Kellison, PSY.D.Psychologist1760538896
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Verify Tracy D. Thiem in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 24037Check 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).
Tracy D. Thiem among 12,647 clinical psychologist records in California
Tracy D. Thiem, 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 2011, is newer than 59% of them.
- NPI issued2011 · 59% of these records are older, 37% newer
- In a Medicare fileYes · 9% of these records are
- In the CMS Doctors and Clinicians fileYes · 19% of these records are
- Graduated1999 · median 2006 among the 2,424 with a school on file
- Record last updated2015 · 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).
29 clinical psychologist records list a practice address in Petaluma
They are 29 of the 1,856 NPPES records with a practice address in Petaluma, and 12,647 clinical psychologist records in California.
All 12,647 in California → Every provider in Petaluma → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Denise Garibaldi, PHDPetaluma, CA 949521912911926
- Anna Gray, MFT, PSYD.Petaluma, CA 949521891901914
- Manjit KauraPetaluma, CA 949521104832013
- Richard Lesch, PHDPetaluma, CA 949521649210691
- Julia MelodyPetaluma, CA 949521144265851
- Gary MillerPetaluma, CA 949521932129327
- Christina Reed, M.A. PSY DPetaluma, CA 949521992866552
- Jorge Saavedra, PSY.D.Petaluma, CA 949521669667499
Common questions
What is Tracy D. Thiem, PH.D.'s NPI number?
Tracy D. Thiem, PH.D.'s National Provider Identifier (NPI) is 1023307766, issued on Apr 4, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Tracy D. Thiem, PH.D. located?
The NPPES record lists a practice address at 7 4TH St, Petaluma, CA, 94952. Phone: (707) 637-3022. Providers update this record themselves, so call before visiting.
How can I verify Tracy D. Thiem, PH.D.'s license?
NPPES lists California license number 24037, 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.