Gemma Williams, LCSW
NPI 1124218409 · Clinical Social Worker · Fountain Valley, CA
Gemma Williams, LCSW is a Clinical Social Worker provider in Fountain Valley, CA (NPI 1124218409).
Provider details
- NPI number
- 1124218409
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- ASW 22065 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
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
18 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
- 2007-08-01
- Last updated
- 2011-08-02
Frequently asked questions
- What is Gemma Williams's NPI number?
- Gemma Williams's National Provider Identifier (NPI) is 1124218409, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gemma Williams's specialty?
- Gemma Williams is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Gemma Williams located?
- Gemma Williams's practice location on file with NPPES is 17350 Mount Herrmann St, Fountain Valley, CA 92708-4114.
- What is Gemma Williams's phone number?
- The practice phone number listed in the NPPES registry for Gemma Williams is (714) 444-3463.
- Is Gemma Williams's NPI active?
- Yes — Gemma Williams's NPI (1124218409) is active in the NPPES registry as of the last update on 2011-08-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.