Elizabeth Williamson, MA, BCBA
NPI 1144563388 · Behavior Analyst · Los Angeles, CA
Elizabeth Williamson, MA, BCBA is a Behavior Analyst provider in Los Angeles, CA (NPI 1144563388).
Provider details
- NPI number
- 1144563388
- Entity type
- Individual
- Primary specialty
- Behavior AnalystBehavioral Health & Social Service Providers
- Credential
- MA, BCBA
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
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
13 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 400 E Royal LnIrving, TX 75039-3540Phone: (855) 832-6727Fax: (772) 675-9100
Registry dates
- Enumerated
- 2013-04-05
- Last updated
- 2018-10-01
Frequently asked questions
- What is Elizabeth Williamson's NPI number?
- Elizabeth Williamson's National Provider Identifier (NPI) is 1144563388, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Elizabeth Williamson's specialty?
- Elizabeth Williamson is listed in the NPPES registry with a primary specialty of Behavior Analyst (Behavioral Health & Social Service Providers).
- Where is Elizabeth Williamson located?
- Elizabeth Williamson's practice location on file with NPPES is 2115 Beverly Blvd, Los Angeles, CA 90057.
- What is Elizabeth Williamson's phone number?
- The practice phone number listed in the NPPES registry for Elizabeth Williamson is (323) 938-3434.
- Is Elizabeth Williamson's NPI active?
- Yes — Elizabeth Williamson's NPI (1144563388) is active in the NPPES registry as of the last update on 2018-10-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.