Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Sonia Etelvina Diaz

Individual provider Clinical Social Worker · NPI 1497844914

Sonia Etelvina Diaz is a Clinical Social Worker in Los Angeles, California. Qualified in 2007, 19 years ago. Practices with Los Angeles County Department of Mental Health, a 294-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
19
Licensed in
CA
In the registry since
2006
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Practice location Address checks out

550 S Vermont Ave
Los Angeles, CA 90020-1912 Not confirmed with CMS for 13 years — call before visiting
Phone: (213) 351-5495
Fax: (213) 427-6161
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 29269 (CA)

Record details

NPI number1497844914
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedOctober 12, 2006
Last updated in NPPESMarch 11, 2013

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 2007 (19 years in practice)
Group practice Los Angeles County Department Of Mental Health — 294 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients18
Services billed 168 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Los Angeles County Department of Mental Health

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 294 clinicians in the practice; 12 are shown here.

Other providers in Los Angeles