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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

VIVIEN ROSE MURHAF TAN
NPI 1710849211
Social Worker in Santa Ana, CA

Active since December 02, 2025
2130 E 4TH ST, SANTA ANA, CA 92705(714) 543-5437 Get Directions Write a Review

NPPES record last updated: July 16, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 16, 2026, Dec 2, 2025 (2 updates tracked since 2025).

About Vivien Rose Murhaf Tan NPPES

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

VIVIEN ROSE MURHAF TAN (NPI 1710849211) is an individual social worker in Santa Ana, California, licensed in California (ACSW132840) and active in the NPI registry since December 2025. She maintains a secondary practice location in Santa Ana.

NPPES Registry Identity

NPI1710849211
Entity TypeIndividualFemale
Primary Taxonomy104100000X
Provider Legal NameVIVIEN ROSE MURHAF TAN
Location Address2130 E 4TH STSanta Ana, CA 92705-3818
Mailing Address2130 E 4th StSanta Ana, CA 92705-3818 · (714) 543-5437
Phone(714) 543-5437
Sole ProprietorNo
Enumeration DateDecember 2, 2025
Last NPPES UpdateJuly 16, 20262 updates tracked since enumeration
NPPES CertifiedJuly 16, 2026
✔ NPI 1710849211 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial WorkerBehavioral Health & Social Service Providers
Taxonomy Code104100000X
License✔ Licensed in CA · ACSW132840
Definition
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.
2130 E 4TH ST, Santa Ana, CA 92705
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Secondary Practice Location 1

Location 119356 Saylor TerSanta Ana, CA 92705-1437 · Phone (714) 543-5437

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.

RIGOBERTO GALVAN
Peer Specialist
2130 E 4TH ST
SANTA ANA, CA 92705
Orange County (714) 543-5437
JAMIE KATHRYN MCKAY
Counselor (Mental Health)
2130 E 4TH ST
SANTA ANA, CA 92705
Orange County (714) 543-5437
ASHLEY ROSE LOMBARDI
Counselor (Mental Health)
2130 E 4TH ST
SANTA ANA, CA 92705
Orange County (714) 543-5437
HANNAH JANG
Social Worker (Clinical)
2130 E 4TH ST
SANTA ANA, CA 92705
Orange County (714) 543-5437
TRACY CLARISSA RUIZ-LOPEZ
Day Training/Habilitation Specialist
2130 E 4TH ST
SANTA ANA, CA 92705
Orange County (714) 543-5437
VANESSA JOY FARISH
Counselor (Mental Health)
2130 E 4TH ST
SANTA ANA, CA 92705
Orange County (714) 543-5437
ERICA DUARTE
Counselor (Mental Health)
2130 E 4TH ST, SUITE 200
SANTA ANA, CA 92705
Orange County (714) 543-5437
SAYURI VIANEY MOZO
Counselor (Mental Health)
2130 E 4TH ST
SANTA ANA, CA 92705
Orange County (714) 543-5437

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 Vivien Tan's NPI number?

The NPI number for Vivien Tan is 1710849211. It was assigned to this individual provider in the NPPES registry on December 2, 2025.

Where is Vivien Tan located?

Vivien Tan practices at 2130 E 4th St, Santa Ana, CA 92705. The listed phone number is (714) 543-5437.

What is Vivien Tan's specialty?

The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.

When was this NPI record last updated?

The NPPES record for Vivien Tan was last updated on July 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.