Oscar Villasimon, LCSW
NPI 1841415148 · Clinical Social Worker · Palo Alto, CA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Oscar Villasimon, LCSW is a Clinical Social Worker provider in Palo Alto, CA (NPI 1841415148).
Provider details
- NPI number
- 1841415148
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- No
- License
- LCS 26505 (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
19 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
- 2007-04-13
- Last updated
- 2014-04-14
Frequently asked questions
- What is Oscar Villasimon's NPI number?
- Oscar Villasimon's National Provider Identifier (NPI) is 1841415148, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Oscar Villasimon's specialty?
- Oscar Villasimon is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Oscar Villasimon located?
- Oscar Villasimon's practice location on file with NPPES is 451 Lytton Ave, Palo Alto, CA 94301-1535.
- What is Oscar Villasimon's phone number?
- The practice phone number listed in the NPPES registry for Oscar Villasimon is (714) 604-7834.
- Does Oscar Villasimon accept Medicare?
- Oscar Villasimon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Oscar Villasimon's NPI active?
- Yes — Oscar Villasimon's NPI (1841415148) is active in the NPPES registry as of the last update on 2014-04-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.