1. Home
  2. Directory
  3. California
  4. Los Angeles
  5. Day Training Habilitation Specialist
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

GUILLERMO SIORDIA
NPI 1689534547
Day Training/Habilitation Specialist in Los Angeles, CA

Active since November 13, 2025
3875 S WESTERN AVE, LOS ANGELES, CA 90062(323) 290-4367 Get Directions Write a Review

NPPES record last updated: June 17, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Guillermo Siordia NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GUILLERMO SIORDIA (NPI 1689534547) is an individual day training/habilitation specialist in Los Angeles, California and active in the NPI registry since November 2025.

NPPES Registry Identity

NPI1689534547
Entity TypeIndividualMale
Primary Taxonomy373H00000X
Provider Legal NameGUILLERMO SIORDIA
Location Address3875 S WESTERN AVELos Angeles, CA 90062-1105
Mailing Address9345 3/4 Washburn RdDowney, CA 90242-2910 · (562) 583-9207
Phone(323) 290-4367
Sole ProprietorNo
Enumeration DateNovember 13, 2025
Last NPPES UpdateJune 17, 2026
NPPES CertifiedJune 17, 2026
✔ NPI 1689534547 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDay Training/Habilitation SpecialistNursing Service Related Providers
Taxonomy Code373H00000X
Definition
Individuals experienced or trained in working with developmentally disabled individuals who need assistance in acquiring and maintaining life skills that enable them to cope more effectively with the demands of independent living.
3875 S WESTERN AVE, Los Angeles, CA 90062
Open in Google Maps ↗

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.

ARZELL LAVEE SCOGGINS
Marriage & Family Therapist
3875 S WESTERN AVE
LOS ANGELES, CA 90062
Los Angeles County (323) 290-4377
MRS. LYDIA ANN BANKS I
Rehabilitation Practitioner
3875 S WESTERN AVE
LOS ANGELES, CA 90062
Los Angeles County (323) 290-4354
DEMETRIA JARMON
Community Health Worker
3875 S WESTERN AVE
LOS ANGELES, CA 90062
Los Angeles County (323) 290-4367
MRS. JACQUENE J RICHARDSON
Licensed Psychiatric Technician
3875 S WESTERN AVE
LOS ANGELES, CA 90062
Los Angeles County (323) 290-4373
ELISA BUENO
Rehabilitation Practitioner
3875 S WESTERN AVE
LOS ANGELES, CA 90062
Los Angeles County (323) 290-4349
MS. AYANNA NICOLE RUSSELL
Licensed Vocational Nurse
3875 S WESTERN AVE
LOS ANGELES, CA 90062
Los Angeles County (323) 290-4356
AMINTA YESENIA AMAYA
Case Manager/Care Coordinator
3875 S WESTERN AVE
LOS ANGELES, CA 90062
Los Angeles County (213) 639-2500
RAVEN C FLEMING
Case Manager/Care Coordinator
3875 S WESTERN AVE
LOS ANGELES, CA 90062
Los Angeles County (626) 254-5000

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 Guillermo Siordia's NPI number?

The NPI number for Guillermo Siordia is 1689534547. It was assigned to this individual provider in the NPPES registry on November 13, 2025.

Where is Guillermo Siordia located?

Guillermo Siordia practices at 3875 S Western Ave, Los Angeles, CA 90062. The listed phone number is (323) 290-4367.

What is Guillermo Siordia's specialty?

The primary specialty registered for this NPI is Day Training/Habilitation Specialist with taxonomy code 373H00000X.

When was this NPI record last updated?

The NPPES record for Guillermo Siordia was last updated on June 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 53 days 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.