IndividualActive
Marissa Williamson, BCBA
NPI 1942512496 · Behavior Analyst · Thousand Oaks, CA
Marissa Williamson, BCBA is a Behavior Analyst provider in Thousand Oaks, CA (NPI 1942512496).
Provider details
- NPI number
- 1942512496
- Entity type
- Individual
- Primary specialty
- Behavior AnalystBehavioral Health & Social Service Providers
- Credential
- BCBA
- Sex
- Female
- Sole proprietor
- Yes
- License
- 1-09-6790
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(83/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 yrs in NPPES registry
- Profile completeness38% of score
100% 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
100 E Thousand Oaks Blvd
#228
Thousand Oaks, CA 91360-5713
Phone: (877) 262-9133
Fax: (877) 262-9134
Street-level locationGet directions
Mailing address
100 E Thousand Oaks Blvd
Thousand Oaks, CA 91360-5713
Registry dates
- Enumerated
- 2010-07-12
- Last updated
- 2010-07-12
Frequently asked questions
- What is Marissa Williamson's NPI number?
- Marissa Williamson's National Provider Identifier (NPI) is 1942512496, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marissa Williamson's specialty?
- Marissa Williamson is listed in the NPPES registry with a primary specialty of Behavior Analyst (Behavioral Health & Social Service Providers).
- Where is Marissa Williamson located?
- Marissa Williamson's practice location on file with NPPES is 100 E Thousand Oaks Blvd, Thousand Oaks, CA 91360-5713.
- What is Marissa Williamson's phone number?
- The practice phone number listed in the NPPES registry for Marissa Williamson is (877) 262-9133.
- Is Marissa Williamson's NPI active?
- Yes — Marissa Williamson's NPI (1942512496) is active in the NPPES registry as of the last update on 2010-07-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.