NPPES file of Aug 9, 2026

Katherine Marie Russeau, PSY.D.

Clinical Psychologist · Westlake Village, CA

Katherine Marie Russeau, PSY.D. is a clinical psychologist with a practice address in Westlake Village, California, and NPI 1629802434, issued on Aug 26, 2024. Check the license (California PSY35120, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1629802434
Name
Katherine Marie Russeau
Credential
PSY.D.
Primary taxonomy
Clinical Psychologist 103TC0700X
License number
PSY35120 CA
Self-reported in NPPES; status is on the state search
Practice location
31194 LA Baya Dr Ste 100, Westlake Village, CA 91362
Phone
(805) 242-2429
Enumerated
Aug 26, 2024
Record last updated
Jan 9, 2025
Fax
(310) 870-7197
Medicare enrollment
Enrolled (PECOS I20241104001989); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest clinical psychologist records → All 12,647 in California → Look up another NPI →

Also registered at 31194 LA Baya Dr Ste 100

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jose-Antonio Aguilar, PSY.D.Psychologist1780353565
  2. Andrea Clark, PH.DClinical Psychologist1013146802
  3. Jessica Faragallah, PHDClinical Psychologist1346019478
  4. Katie Patel, PSYDPsychologist1548059207
  5. Rhiannon Rabine, PSYDClinical Psychologist1669093589
  6. Patricia Sikkeland, PSYDPsychologist1669780292

Verify Katherine Marie Russeau in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license PSY35120    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Pacific Coast Psychology Group IncBakersfield, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Katherine Marie Russeau among 12,647 clinical psychologist records in California

Katherine Marie Russeau, PSY.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 2024, is newer than 96% of them.

  • NPI issued2024 · 96% of these records are older, 2% newer
  • In a Medicare fileYes · 9% of these records are
  • In the CMS Doctors and Clinicians fileYes · 19% of these records are
  • Graduated2022 · median 2006 among the 2,424 with a school on file
  • Record last updated2025 · 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).

51 clinical psychologist records list a practice address in Westlake Village

They are 51 of the 1,397 NPPES records with a practice address in Westlake Village, and 12,647 clinical psychologist records in California.

All 12,647 in California → Every provider in Westlake Village → Clinical Psychologist nationwide →

The 8 clinical psychologist records with the nearest ZIP codes

  1. Andrea Clark, PH.DWestlake Village, CA 913621013146802
  2. Max Fuhrmann, PH.D.Westlake Village, CA 913621316079767
  3. Steven Hunt, PHDWestlake Village, CA 913621184703720
  4. Luisa Johnson, PH.D.Westlake Village, CA 913621790834356
  5. Charles Kairys, PSY.D.Westlake Village, CA 913621396935698
  6. Lydia Luna, PH.D.Thousand Oaks, CA 913621952679375
  7. Sarabjit Mangat, PSY.DWestlake Village, CA 913621487787636
  8. Jeanette Merkel, PH.D., M.F.T.Thousand Oaks, CA 913621285717041

Common questions

What is Katherine Marie Russeau, PSY.D.'s NPI number?

Katherine Marie Russeau, PSY.D.'s National Provider Identifier (NPI) is 1629802434, issued on Aug 26, 2024. An NPI identifies a provider in billing; it is not a license.

Where is Katherine Marie Russeau, PSY.D. located?

The NPPES record lists a practice address at 31194 LA Baya Dr Ste 100, Westlake Village, CA, 91362. Phone: (805) 242-2429. Providers update this record themselves, so call before visiting.

How can I verify Katherine Marie Russeau, PSY.D.'s license?

NPPES lists California license number PSY35120, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.