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

DENNIS CHAU
NPI 1891571394
Occupational Therapist in San Francisco, CA

Active since August 31, 2023
684 ELLIS ST, SAN FRANCISCO, CA 94109(415) 409-4611 Get Directions Write a Review

NPPES record last updated: October 21, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jun 10, 2025, Aug 31, 2023 (2 updates tracked since 2023).

About Dennis Chau NPPES

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

DENNIS CHAU (NPI 1891571394) is an individual occupational therapist in San Francisco, California, licensed in California (1720385032) and active in the NPI registry since August 2023.

NPPES Registry Identity

NPI1891571394
Entity TypeIndividualMale
Primary Taxonomy225X00000X
Provider Legal NameDENNIS CHAU
Location Address684 ELLIS STSan Francisco, CA 94109-8090
Mailing Address684 Ellis StSan Francisco, CA 94109-8090 · (415) 902-3853
Sole ProprietorNo
Enumeration DateAugust 31, 2023
Last NPPES UpdateOctober 21, 20262 updates tracked since enumeration
NPPES CertifiedOctober 21, 2026
✔ NPI 1891571394 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOccupational TherapistRespiratory, Developmental, Rehabilitative and Restorative Service Providers
Taxonomy Code225X00000X
License✔ Licensed in CA · 1720385032
Definition
An occupational therapist is a person who has graduated from an entry-level occupational therapy program accredited by the Accreditation Council for Occupational Therapy Education (ACOTE) or predecessor organizations, or approved by the World Federation of Occupational Therapists (WFOT), or an equivalent international occupational therapy education program; has successfully completed a period of supervised fieldwork experience required by the occupational therapy program; has passed a nationally recognized entry-level examination for occupational therapists, and fulfills state requirements for licensure, certification, or registration. An occupational therapist provides interventions based on evaluation and which emphasize the therapeutic use of everyday life activities (i.e., occupations) with individuals or groups for the purpose of facilitating participation in roles and situations and in home, school, workplace, community and other settings. Occupational therapy services are provided for the purpose of promoting health and wellness and are provided to those who have or are at risk for developing an illness, injury, disease, disorder, condition, impairment, disability, activity limitation, or participation restriction. Occupational therapists address the physical, cognitive, psychosocial, sensory, and other aspects of occupational performance in a variety of contexts to support engagement in everyday life activities that affect health, well-being, and quality of life.
684 ELLIS ST, San Francisco, CA 94109

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.

Counselor
684 ELLIS ST
SAN FRANCISCO, CA 94109
Case Manager/Care Coordinator
684 ELLIS ST
SAN FRANCISCO, CA 94109
Community/Behavioral Health
684 ELLIS ST
SAN FRANCISCO, CA 94109
Counselor
684 ELLIS ST
SAN FRANCISCO, CA 94109
Marriage & Family Therapist
684 ELLIS ST
SAN FRANCISCO, CA 94109
Social Worker (Clinical)
684 ELLIS ST
SAN FRANCISCO, CA 94109
Case Manager/Care Coordinator
684 ELLIS ST
SAN FRANCISCO, CA 94109
Specialist
684 ELLIS ST
SAN FRANCISCO, CA 94109

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 Dennis Chau's NPI number?

The NPI number for Dennis Chau is 1891571394. It was assigned to this individual provider in the NPPES registry on August 31, 2023.

Where is Dennis Chau located?

Dennis Chau practices at 684 Ellis St, San Francisco, CA 94109. The listed phone number is (415) 409-4611.

What is Dennis Chau's specialty?

The primary specialty registered for this NPI is Occupational Therapist with taxonomy code 225X00000X.

When was this NPI record last updated?

The NPPES record for Dennis Chau was last updated on October 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.