Melissa Villanueva, LCSW
NPI 1578100608 · Clinical Social Worker · Sacramento, CA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Melissa Villanueva, LCSW is a Clinical Social Worker provider in Sacramento, CA (NPI 1578100608).
Provider details
- NPI number
- 1578100608
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- 86529 (CA)
Specialties & taxonomies
Behavioral Health & Social Service 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
2 documented practice locations
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
Additional practice locations (1)
- 2751 Napa Valley Corporate Dr Bldg BNapa, CA 94558-6216Phone: (707) 253-4279
Registry dates
- Enumerated
- 2019-12-09
- Last updated
- 2022-06-30
- Certified
- 2022-06-30
Frequently asked questions
- What is Melissa Villanueva's NPI number?
- Melissa Villanueva's National Provider Identifier (NPI) is 1578100608, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Melissa Villanueva's specialty?
- Melissa Villanueva is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Melissa Villanueva located?
- Melissa Villanueva's practice location on file with NPPES is 4150 V St, Sacramento, CA 95817-1460.
- What is Melissa Villanueva's phone number?
- The practice phone number listed in the NPPES registry for Melissa Villanueva is (530) 574-0171.
- Does Melissa Villanueva accept Medicare?
- Melissa Villanueva is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Melissa Villanueva's NPI active?
- Yes — Melissa Villanueva's NPI (1578100608) is active in the NPPES registry as of the last update on 2022-06-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.