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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DA HAO RUAN
NPI 1245024231
Social Worker in Fremont, CA

Active since April 07, 2025
2500 MOWRY AVE STE 200, FREMONT, CA 94538(510) 248-1600 Get Directions Write a Review

NPPES record last updated: August 4, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Aug 4, 2026, Apr 7, 2025 (2 updates tracked since 2025).

About Da Hao Ruan NPPES

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

DA HAO RUAN (NPI 1245024231) is an individual social worker in Fremont, California and active in the NPI registry since April 2025.

NPPES Registry Identity

NPI1245024231
Entity TypeIndividualMale
Primary Taxonomy104100000X
Provider Legal NameDA HAO RUAN
Location Address2500 MOWRY AVE STE 200Fremont, CA 94538-1605
Mailing Address1161 3rd AveOakland, CA 94606-2226 · (510) 325-2161
Phone(510) 248-1600
Sole ProprietorNo
Enumeration DateApril 7, 2025
Last NPPES UpdateAugust 4, 20262 updates tracked since enumeration
NPPES CertifiedAugust 4, 2026
✔ NPI 1245024231 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial WorkerBehavioral Health & Social Service Providers
Taxonomy Code104100000X
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.
2500 MOWRY AVE STE 200, Fremont, CA 94538
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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 Da Hao Ruan's NPI number?

The NPI number for Da Hao Ruan is 1245024231. It was assigned to this individual provider in the NPPES registry on April 7, 2025.

Where is Da Hao Ruan located?

Da Hao Ruan practices at 2500 Mowry Ave Ste 200, Fremont, CA 94538. The listed phone number is (510) 248-1600.

What is Da Hao Ruan'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 Da Hao Ruan was last updated on August 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.