Marguerite Williams
NPI 1255918330 · Assistant Behavior Analyst · Corona, CA
Marguerite Williams is a Assistant Behavior Analyst provider in Corona, CA (NPI 1255918330).
Provider details
- NPI number
- 1255918330
- 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
5 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
- 2021-03-25
- Last updated
- 2024-08-23
- Certified
- 2024-08-23
Frequently asked questions
- What is Marguerite Williams's NPI number?
- Marguerite Williams's National Provider Identifier (NPI) is 1255918330, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marguerite Williams's specialty?
- Marguerite Williams is listed in the NPPES registry with a primary specialty of Assistant Behavior Analyst (Behavioral Health & Social Service Providers).
- Where is Marguerite Williams located?
- Marguerite Williams's practice location on file with NPPES is 255 E Rincon St Ste 219, Corona, CA 92879-1387.
- What is Marguerite Williams's phone number?
- The practice phone number listed in the NPPES registry for Marguerite Williams is (951) 817-5328.
- Is Marguerite Williams's NPI active?
- Yes — Marguerite Williams's NPI (1255918330) is active in the NPPES registry as of the last update on 2024-08-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.