IndividualActive
Mary Williams
NPI 1285448696 · Behavior Technician · Concord, CA
Mary Williams is a Behavior Technician provider in Concord, CA (NPI 1285448696).
Provider details
- NPI number
- 1285448696
- Entity type
- Individual
- Primary specialty
- Behavior TechnicianBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Basic profile(49/100 index)
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
1987 Bonifacio St
Concord, CA 94520-2189
Phone: (925) 640-1220
Street-level locationGet directions
Mailing address
Po Box 393
Concord, CA 94522-0393
Registry dates
- Enumerated
- 2025-02-05
- Last updated
- 2025-02-05
- Certified
- 2025-01-31
Frequently asked questions
- What is Mary Williams's NPI number?
- Mary Williams's National Provider Identifier (NPI) is 1285448696, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Williams's specialty?
- Mary Williams is listed in the NPPES registry with a primary specialty of Behavior Technician (Behavioral Health & Social Service Providers).
- Where is Mary Williams located?
- Mary Williams's practice location on file with NPPES is 1987 Bonifacio St, Concord, CA 94520-2189.
- What is Mary Williams's phone number?
- The practice phone number listed in the NPPES registry for Mary Williams is (925) 640-1220.
- Is Mary Williams's NPI active?
- Yes — Mary Williams's NPI (1285448696) is active in the NPPES registry as of the last update on 2025-02-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.