Sierra Williams
NPI 1093470908 · Assistant Behavior Analyst · Tracy, CA
Sierra Williams is a Assistant Behavior Analyst provider in Tracy, CA (NPI 1093470908).
Provider details
- NPI number
- 1093470908
- Entity type
- Individual
- Primary specialty
- Assistant Behavior AnalystBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Behavior Technician106S00000X
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
4 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
- 2021-11-04
- Last updated
- 2026-03-24
- Certified
- 2026-03-24
Frequently asked questions
- What is Sierra Williams's NPI number?
- Sierra Williams's National Provider Identifier (NPI) is 1093470908, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sierra Williams's specialty?
- Sierra Williams is listed in the NPPES registry with a primary specialty of Assistant Behavior Analyst (Behavioral Health & Social Service Providers).
- Where is Sierra Williams located?
- Sierra Williams's practice location on file with NPPES is 510 Whispering Wind Dr Ste 110, Tracy, CA 95377-8119.
- What is Sierra Williams's phone number?
- The practice phone number listed in the NPPES registry for Sierra Williams is (209) 832-7756.
- Is Sierra Williams's NPI active?
- Yes — Sierra Williams's NPI (1093470908) is active in the NPPES registry as of the last update on 2026-03-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.