IndividualActive
Matthew Williams
NPI 1891251013 · Behavior Technician · Fullerton, CA
Matthew Williams is a Behavior Technician provider in Fullerton, CA (NPI 1891251013).
Provider details
- NPI number
- 1891251013
- Entity type
- Individual
- Primary specialty
- Behavior TechnicianBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(60/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 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
713 W Commonwealth Ave
Fullerton, CA 92832-1612
Phone: (714) 879-4274
Street-level locationGet directions
Mailing address
151 S Poplar Ave
Brea, CA 92821-5057
Registry dates
- Enumerated
- 2019-02-12
- Last updated
- 2019-02-12
Frequently asked questions
- What is Matthew Williams's NPI number?
- Matthew Williams's National Provider Identifier (NPI) is 1891251013, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Williams's specialty?
- Matthew Williams is listed in the NPPES registry with a primary specialty of Behavior Technician (Behavioral Health & Social Service Providers).
- Where is Matthew Williams located?
- Matthew Williams's practice location on file with NPPES is 713 W Commonwealth Ave, Fullerton, CA 92832-1612.
- What is Matthew Williams's phone number?
- The practice phone number listed in the NPPES registry for Matthew Williams is (714) 879-4274.
- Is Matthew Williams's NPI active?
- Yes — Matthew Williams's NPI (1891251013) is active in the NPPES registry as of the last update on 2019-02-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.