1. Home
  2. Directory
  3. California
  4. Palo Alto
  5. Social Worker
  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.

SARAH SONG RYU ASW
NPI 1053903849
Social Worker in Palo Alto, CA

Active since February 03, 2021
650 CLARK WAY, PALO ALTO, CA 94304(650) 617-3871 Get Directions Write a Review

NPPES record last updated: September 9, 2026. Verified against the NPPES registry weekly; last sync: September 20, 2026.

Record update history: Sep 9, 2026, Feb 3, 2021 (2 updates tracked since 2021).

About Sarah Song Ryu Asw NPPES

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

SARAH SONG RYU ASW (NPI 1053903849) is an individual social worker in Palo Alto, California, licensed in California (ASW142057) and active in the NPI registry since February 2021.

NPPES Registry Identity

NPI1053903849
Entity TypeIndividualFemale
Primary Taxonomy104100000X
Provider Legal NameSARAH SONG RYUCredential: ASW
Location Address650 CLARK WAYPalo Alto, CA 94304-2300
Mailing Address650 Clark WayPalo Alto, CA 94304-2300 · (650) 617-3871
Phone(650) 617-3871
Sole ProprietorNo
Enumeration DateFebruary 3, 2021
Last NPPES UpdateSeptember 9, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 9, 2026
✔ NPI 1053903849 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtySocial WorkerBehavioral Health & Social Service Providers
Taxonomy Code104100000X
License✔ Licensed in CA · ASW142057
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.
Also ListedBehavior TechnicianTaxonomy 106S00000X
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
650 CLARK WAY, Palo Alto, CA 94304
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.

DR. ZAHRA MURTAZA PHD
Psychologist (Clinical Child & Adolescent)
650 CLARK WAY
PALO ALTO, CA 94304
Santa Clara County (650) 617-3829
KELLY DAWNE MCBRIDE LCSW
Social Worker (School)
650 CLARK WAY
PALO ALTO, CA 94304
Santa Clara County (650) 617-3834
KARLY CROCKETT
Social Worker (Clinical)
650 CLARK WAY
PALO ALTO, CA 94304
Santa Clara County (650) 326-5530
DANNA TORRES
Marriage & Family Therapist
650 CLARK WAY
PALO ALTO, CA 94304
Santa Clara County (650) 326-5530
MS. ROXANNA JEZREEL FLORES VELASCO MA
Psychologist
650 CLARK WAY
PALO ALTO, CA 94304
Santa Clara County (650) 326-5530
JAMIE QWAN
Marriage & Family Therapist
650 CLARK WAY
PALO ALTO, CA 94304
Santa Clara County (650) 326-5530
EILENE OZAWA
Occupational Therapist (Pediatrics)
650 CLARK WAY
PALO ALTO, CA 94304
Santa Clara County (650) 688-3690
DR. OLIVIA KATHLEEN MAZUR MCDONALD PSY.D.
Psychologist (Clinical)
650 CLARK WAY
PALO ALTO, CA 94304
Santa Clara County (650) 326-5530

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 Sarah Ryu's NPI number?

The NPI number for Sarah Ryu is 1053903849. It was assigned to this individual provider in the NPPES registry on February 3, 2021.

Where is Sarah Ryu located?

Sarah Ryu practices at 650 Clark Way, Palo Alto, CA 94304. The listed phone number is (650) 617-3871.

What is Sarah Ryu'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 Sarah Ryu was last updated on September 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.