Claire Guerin, LCSW
NPI 1902493901 · Clinical Social Worker · Mill Valley, CA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Claire Guerin, LCSW is a Clinical Social Worker provider in Mill Valley, CA (NPI 1902493901).
Provider details
- NPI number
- 1902493901
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- 82848 (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
5 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
- 2020-12-23
- Last updated
- 2020-12-23
- Certified
- 2020-12-23
Frequently asked questions
- What is Claire Guerin's NPI number?
- Claire Guerin's National Provider Identifier (NPI) is 1902493901, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Claire Guerin's specialty?
- Claire Guerin is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Claire Guerin located?
- Claire Guerin's practice location on file with NPPES is 311 Miller Ave Ste A3, Mill Valley, CA 94941-2844.
- What is Claire Guerin's phone number?
- The practice phone number listed in the NPPES registry for Claire Guerin is (323) 835-4332.
- Does Claire Guerin accept Medicare?
- Claire Guerin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Claire Guerin's NPI active?
- Yes — Claire Guerin's NPI (1902493901) is active in the NPPES registry as of the last update on 2020-12-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.