MS. HILDA ANN WILLIAMSON LCSW
NPI 1265089312
Social Worker - Clinical in Claremont, CA
About Ms. Hilda Ann Williamson Lcsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. HILDA ANN WILLIAMSON LCSW (NPI 1265089312) is an individual clinical provider in Claremont, California, licensed in California (133700) and active in the NPI registry since August 2019. She is enrolled in Medicare PECOS and is a graduate of Other (2013).
NPPES Registry Identity
Specialties & Licenses 2
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
Other Names 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Ms. Hilda Ann Williamson Lcsw is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 91711 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CLAREMONT, CA 91711
CLAREMONT, CA 91711
CLAREMONT, CA 91711
CLAREMONT, CA 91711
CLAREMONT, CA 91711
CLAREMONT, CA 91711
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Hilda Williamson's NPI number?
The NPI number for Hilda Williamson is 1265089312. It was assigned to this individual provider in the NPPES registry on August 23, 2019. The provider is also known as Ms. Hilda Ann Venegas.
Where is Hilda Williamson located?
Hilda Williamson practices at 675 W Foothill Blvd Ste 200, Claremont, CA 91711. The listed phone number is (925) 282-1778.
What is Hilda Williamson's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Hilda Williamson enrolled in Medicare?
Yes. Hilda Williamson is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
When was this NPI record last updated?
The NPPES record for Hilda Williamson was last updated on October 22, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.
