Catherine Ann Thielen, PSYD
Clinical Psychologist · Irvine, CA
Catherine Ann Thielen, PSYD is a clinical psychologist with a practice address in Irvine, California, and NPI 1356551287, issued on May 22, 2007. Check the license (California PSY30762, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Catherine Ann Thielen
- Credential
- PSYD
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- PSY30762 CA
Self-reported in NPPES; status is on the state search - Practice location
- 19742 Macarthur Blvd Ste 100, Irvine, CA 92612
- Phone
- (714) 646-8034
- Enumerated
- May 22, 2007
- Record last updated
- Apr 19, 2024
- Fax
- (714) 492-8264
- Medicare enrollment
- Enrolled (PECOS I20210413002944); 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 19742 Macarthur Blvd Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Heidi Headding, LMFTMarriage & Family Therapist1285913863
- Stephanie Rivera, FNPFamily Nurse Practitioner1740052471
Verify Catherine Ann Thielen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PSY30762Check 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
- Chiron Psychological IncYorba Linda, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Catherine Ann Thielen among 12,647 clinical psychologist records in California
Catherine Ann Thielen, PSYD 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 2007, is newer than 20% of them.
- NPI issued2007 · 20% of these records are older, 57% newer
- In a Medicare fileYes · 9% of these records are
- In the CMS Doctors and Clinicians fileYes · 19% of these records are
- Graduated2007 · median 2006 among the 2,424 with a school on file
- Record last updated2024 · 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).
140 clinical psychologist records list a practice address in Irvine
They are 140 of the 7,778 NPPES records with a practice address in Irvine, and 12,647 clinical psychologist records in California.
All 12,647 in California → Every provider in Irvine → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Victoria Bloom, PH.D.Irvine, CA 926121063540698
- Gerardo Canul, PH.D.Irvine, CA 926121497832984
- David Franklin, PSY.D.Irvine, CA 926121902996747
- Donald Gates, PH.D.Irvine, CA 926121275694127
- Lisa Henson, PSY.D.Irvine, CA 926121801877816
- Judy Mahoney, PH.D.Irvine, CA 926121821178997
- Michelle Molina, PH.D.Irvine, CA 926121942224985
- Sharon Phelps, PHDIrvine, CA 926121629064100
Common questions
What is Catherine Ann Thielen, PSYD's NPI number?
Catherine Ann Thielen, PSYD's National Provider Identifier (NPI) is 1356551287, issued on May 22, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Ann Thielen, PSYD located?
The NPPES record lists a practice address at 19742 Macarthur Blvd Ste 100, Irvine, CA, 92612. Phone: (714) 646-8034. Providers update this record themselves, so call before visiting.
How can I verify Catherine Ann Thielen, PSYD's license?
NPPES lists California license number PSY30762, 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.