Alison Williams, MSW, PPSC
NPI 1598287294 · Social Worker · San Lorenzo, CA
Alison Williams, MSW, PPSC is a Social Worker provider in San Lorenzo, CA (NPI 1598287294).
Provider details
- NPI number
- 1598287294
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Credential
- MSW, PPSC
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Mental Health Counselor101YM0800X
Behavioral Health & Social Service Providers
- School Social Worker1041S0200X
Behavioral Health & Social Service Providers
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
8 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2017-07-13
- Last updated
- 2019-12-16
- Certified
- 2019-12-16
Frequently asked questions
- What is Alison Williams's NPI number?
- Alison Williams's National Provider Identifier (NPI) is 1598287294, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alison Williams's specialty?
- Alison Williams is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Alison Williams located?
- Alison Williams's practice location on file with NPPES is 50 E Lewelling Blvd, San Lorenzo, CA 94580-1732.
- What is Alison Williams's phone number?
- The practice phone number listed in the NPPES registry for Alison Williams is (510) 273-4700.
- Is Alison Williams's NPI active?
- Yes — Alison Williams's NPI (1598287294) is active in the NPPES registry as of the last update on 2019-12-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.