Michelle Marszalek
NPI 1598575508 · Psychiatric/Mental Health Nurse Practitioner · Thousand Oaks, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michelle Marszalek is a Psychiatric/Mental Health Nurse Practitioner provider in Thousand Oaks, CA (NPI 1598575508).
Provider details
- NPI number
- 1598575508
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- Yes
- License
- 95030194 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2025-01-10
- Last updated
- 2025-01-10
- Certified
- 2025-01-10
Frequently asked questions
- What is Michelle Marszalek's NPI number?
- Michelle Marszalek's National Provider Identifier (NPI) is 1598575508, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michelle Marszalek's specialty?
- Michelle Marszalek is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Michelle Marszalek located?
- Michelle Marszalek's practice location on file with NPPES is 3646 Zenith Ave, Thousand Oaks, CA 91360-6261.
- What is Michelle Marszalek's phone number?
- The practice phone number listed in the NPPES registry for Michelle Marszalek is (630) 890-6530.
- Does Michelle Marszalek accept Medicare?
- Michelle Marszalek is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michelle Marszalek's NPI active?
- Yes — Michelle Marszalek's NPI (1598575508) is active in the NPPES registry as of the last update on 2025-01-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.