NPPES file of Aug 9, 2026

Michelle Marszalek

Psychiatric/Mental Health Nurse Practitioner · Thousand Oaks, CA

Michelle Marszalek is a psychiatric/mental health nurse practitioner with a practice address in Thousand Oaks, California, and NPI 1598575508, issued on Jan 10, 2025. Check the license (California 95030194, 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
1598575508
Name
Michelle Marszalek
Primary taxonomy
Psychiatric/Mental Health Nurse Practitioner 363LP0808X
License number
95030194 CA
Self-reported in NPPES; status is on the state search
Practice location
3646 Zenith Ave, Thousand Oaks, CA 91360
Phone
(630) 890-6530
Enumerated
Jan 10, 2025
Record last updated
Jan 10, 2025
Medicare enrollment
Enrolled (PECOS I20250129001371); accepts Medicare assignment
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 psychiatric/mental health nurse practitioner records → All 4,226 in California → Look up another NPI →

Verify Michelle Marszalek 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 95030194    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. The Los Angeles Free ClinicLos Angeles, CA

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

Michelle Marszalek among 4,226 psychiatric/mental health nurse practitioner records in California

Michelle Marszalek is one of 4,226 psychiatric/mental health nurse practitioner records with a practice address in California. 62% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2025, is newer than 82% of them.

  • NPI issued2025 · 82% of these records are older, 8% newer
  • In a Medicare fileYes · 62% of these records are
  • In the CMS Doctors and Clinicians fileYes · 46% of these records are
  • Graduated2024 · median 2021 among the 1,965 with a school on file
  • Record last updated2025 · 16% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Psychiatric/Mental Health Nurse Practitioner providers in California

There are 4,226 psychiatric/mental health nurse practitioner records in California.

All 4,226 in California → Every provider in Thousand Oaks → Psychiatric/Mental Health Nurse Practitioner nationwide →

The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes

  1. Melani Danoukh, PMHNP-BCThousand Oaks, CA 913601447066386
  2. Julia Cruz Anguiano, PMHNP-BCWestlake Village, CA 913611942190749
  3. Joan Dawson, PSY.D.Westlake Village, CA 913611164555488
  4. Amanda Duwick, PMHNP-BC, MSNWestlake Village, CA 913611710344999
  5. Katheryn Faulconer, PMHNP-BCWestlake Village, CA 913611467305615
  6. Michael Polda, PMHNP-BCWestlake Village, CA 913611922785682
  7. John Vancamp, DNPWestlake Village, CA 913611982156873
  8. Sonia CenaWestlake Village, CA 913621841175759

Common questions

What is Michelle Marszalek's NPI number?

Michelle Marszalek's National Provider Identifier (NPI) is 1598575508, issued on Jan 10, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Michelle Marszalek located?

The NPPES record lists a practice address at 3646 Zenith Ave, Thousand Oaks, CA, 91360. Phone: (630) 890-6530. Providers update this record themselves, so call before visiting.

How can I verify Michelle Marszalek's license?

NPPES lists California license number 95030194, 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.