IndividualActive
Marissa Williams
NPI 1558229617 · Behavior Technician · Modesto, CA
Marissa Williams is a Behavior Technician provider in Modesto, CA (NPI 1558229617).
Provider details
- NPI number
- 1558229617
- 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(47/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in 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
605 Standiford Ave Ste B
Modesto, CA 95350-1000
Phone: (877) 418-2978
Fax: (866) 500-2186
Street-level locationGet directions
Mailing address
350 Fairway Dr Ste 101
Deerfield Beach, FL 33441-1834
Registry dates
- Enumerated
- 2026-01-15
- Last updated
- 2026-01-15
- Certified
- 2026-01-15
Frequently asked questions
- What is Marissa Williams's NPI number?
- Marissa Williams's National Provider Identifier (NPI) is 1558229617, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marissa Williams's specialty?
- Marissa Williams is listed in the NPPES registry with a primary specialty of Behavior Technician (Behavioral Health & Social Service Providers).
- Where is Marissa Williams located?
- Marissa Williams's practice location on file with NPPES is 605 Standiford Ave Ste B, Modesto, CA 95350-1000.
- What is Marissa Williams's phone number?
- The practice phone number listed in the NPPES registry for Marissa Williams is (877) 418-2978.
- Is Marissa Williams's NPI active?
- Yes — Marissa Williams's NPI (1558229617) is active in the NPPES registry as of the last update on 2026-01-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.