Alissa Williams
NPI 1801633219 · Day Training/Habilitation Specialist · Redwood City, CA
Alissa Williams is a Day Training/Habilitation Specialist provider in Redwood City, CA (NPI 1801633219).
Provider details
- NPI number
- 1801633219
- Entity type
- Individual
- Primary specialty
- Day Training/Habilitation SpecialistNursing Service Related Providers
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Nursing Service Related Providers
- Mental Health Counselor101YM0800X
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
1 yr 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
- 2024-07-12
- Last updated
- 2025-12-19
- Certified
- 2025-12-19
Frequently asked questions
- What is Alissa Williams's NPI number?
- Alissa Williams's National Provider Identifier (NPI) is 1801633219, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alissa Williams's specialty?
- Alissa Williams is listed in the NPPES registry with a primary specialty of Day Training/Habilitation Specialist (Nursing Service Related Providers).
- Where is Alissa Williams located?
- Alissa Williams's practice location on file with NPPES is 248 Redwood Ave, Redwood City, CA 94061-3074.
- What is Alissa Williams's phone number?
- The practice phone number listed in the NPPES registry for Alissa Williams is (650) 839-1076.
- Is Alissa Williams's NPI active?
- Yes — Alissa Williams's NPI (1801633219) is active in the NPPES registry as of the last update on 2025-12-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.