Kristen Williams, LCSW
NPI 1265775589 · Clinical Social Worker · Irvine, CA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kristen Williams, LCSW is a Clinical Social Worker provider in Irvine, CA (NPI 1265775589).
Provider details
- NPI number
- 1265775589
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- LCS22291 (CA)
Specialties & taxonomies
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
13 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)
- 18200 Yorba Linda Blvd Ste 106Yorba Linda, CA 92886-4006Phone: (714) 646-8034Fax: (714) 492-8264
Registry dates
- Enumerated
- 2013-04-04
- Last updated
- 2023-10-19
- Certified
- 2021-02-22
Frequently asked questions
- What is Kristen Williams's NPI number?
- Kristen Williams's National Provider Identifier (NPI) is 1265775589, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kristen Williams's specialty?
- Kristen Williams is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Kristen Williams located?
- Kristen Williams's practice location on file with NPPES is 19742 Macarthur Blvd Ste 100, Irvine, CA 92612-2408.
- What is Kristen Williams's phone number?
- The practice phone number listed in the NPPES registry for Kristen Williams is (714) 646-8034.
- Does Kristen Williams accept Medicare?
- Kristen Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kristen Williams's NPI active?
- Yes — Kristen Williams's NPI (1265775589) is active in the NPPES registry as of the last update on 2023-10-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.