Leticia Guillen, LCSW
NPI 1194851642 · Clinical Social Worker · Livingston, CA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leticia Guillen, LCSW is a Clinical Social Worker provider in Livingston, CA (NPI 1194851642).
Provider details
- NPI number
- 1194851642
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- No
- License
- LCS29433 (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
- 2007-02-26
- Last updated
- 2014-05-12
Frequently asked questions
- What is Leticia Guillen's NPI number?
- Leticia Guillen's National Provider Identifier (NPI) is 1194851642, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leticia Guillen's specialty?
- Leticia Guillen is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Leticia Guillen located?
- Leticia Guillen's practice location on file with NPPES is 1140 Main St, Livingston, CA 95334-1257.
- What is Leticia Guillen's phone number?
- The practice phone number listed in the NPPES registry for Leticia Guillen is (209) 394-7913.
- Does Leticia Guillen accept Medicare?
- Leticia Guillen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leticia Guillen's NPI active?
- Yes — Leticia Guillen's NPI (1194851642) is active in the NPPES registry as of the last update on 2014-05-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.