SILVIA DIAZ LCSW
NPI 1699789628
Social Worker - Clinical in Los Angeles, CA
About Silvia Diaz Lcsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SILVIA DIAZ LCSW (NPI 1699789628) is an individual clinical provider in Los Angeles, California, licensed in California (98336) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS and maintains a secondary practice location in Pico Rivera.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Silvia Diaz Lcsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Silvia Diaz reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Los Angeles, CA 90031
- Reassigned Medicare billing, California enrollment
- 533 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 90031 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.
LOS ANGELES, CA 90031
LOS ANGELES, CA 90031
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 Silvia Diaz's NPI number?
The NPI number for Silvia Diaz is 1699789628. It was assigned to this individual provider in the NPPES registry on July 27, 2006.
Where is Silvia Diaz located?
Silvia Diaz practices at 3303 N Broadway, Los Angeles, CA 90031. The listed phone number is (323) 478-8200.
What is Silvia Diaz's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Silvia Diaz enrolled in Medicare?
Yes. Silvia Diaz is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Silvia Diaz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Silvia Diaz reassigns Medicare benefits to Los Angeles County Department Of Mental Health (Los Angeles, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Silvia Diaz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Silvia Diaz was last updated on April 22, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Silvia Diaz, LCSW · NPI 1699789628
Clinical provider in Los Angeles, California. Individual provider, active in the CMS NPPES registry since July 27, 2006.
## Identity
- **NPI:** 1699789628 (Entity type: Individual)
- **Enumerated:** July 27, 2006
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **State license:** 98336 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 3303 N BROADWAY, Los Angeles, CA 90031-2803
- **Phone:** (323) 478-8200
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Los Angeles County Department Of Mental Health (NPI 1336172972, Los Angeles, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 22, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1699789628) · Data from the CMS NPPES public registry.