Mariel Villareal, FNP-BC
NPI 1790314888 · Family Nurse Practitioner · Simi Valley, CA
Mariel Villareal, FNP-BC is a Family Nurse Practitioner provider in Simi Valley, CA (NPI 1790314888).
Provider details
- NPI number
- 1790314888
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-BC
- Sex
- Female
- Sole proprietor
- Yes
- License
- NP95038205 (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
6 yrs 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
- 2020-04-02
- Last updated
- 2026-02-06
- Certified
- 2026-02-06
Frequently asked questions
- What is Mariel Villareal's NPI number?
- Mariel Villareal's National Provider Identifier (NPI) is 1790314888, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mariel Villareal's specialty?
- Mariel Villareal is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mariel Villareal located?
- Mariel Villareal's practice location on file with NPPES is 3094 Geronimo Ave, Simi Valley, CA 93063-5717.
- What is Mariel Villareal's phone number?
- The practice phone number listed in the NPPES registry for Mariel Villareal is (805) 823-5901.
- Is Mariel Villareal's NPI active?
- Yes — Mariel Villareal's NPI (1790314888) is active in the NPPES registry as of the last update on 2026-02-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.