Elizabeth Arellano, LCSW
NPI 1184179939 · Clinical Social Worker · San Mateo, CA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Elizabeth Arellano, LCSW is a Clinical Social Worker provider in San Mateo, CA (NPI 1184179939).
Provider details
- NPI number
- 1184179939
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Counselor101Y00000X
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
9 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
Mailing address
Registry dates
- Enumerated
- 2016-08-22
- Last updated
- 2025-06-04
- Certified
- 2025-06-04
Frequently asked questions
- What is Elizabeth Arellano's NPI number?
- Elizabeth Arellano's National Provider Identifier (NPI) is 1184179939, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Elizabeth Arellano's specialty?
- Elizabeth Arellano is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Elizabeth Arellano located?
- Elizabeth Arellano's practice location on file with NPPES is 2000 Alameda De Las Pulgas, San Mateo, CA 94403-1269.
- What is Elizabeth Arellano's phone number?
- The practice phone number listed in the NPPES registry for Elizabeth Arellano is (650) 542-1913.
- Does Elizabeth Arellano accept Medicare?
- Elizabeth Arellano is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Elizabeth Arellano's NPI active?
- Yes — Elizabeth Arellano's NPI (1184179939) is active in the NPPES registry as of the last update on 2025-06-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.