William Chau
NPI 1093169450 · Mental Health Counselor · Los Angeles, CA
William Chau is a Mental Health Counselor provider in Los Angeles, CA (NPI 1093169450).
Provider details
- NPI number
- 1093169450
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 81458 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Rehabilitation Practitioner225400000X
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 1730 W Olympic BlvdFloor #4, Suite #100Los Angeles, CA 90015-1019Phone: (213) 553-1884Fax: (213) 236-9662
Registry dates
- Enumerated
- 2016-04-21
- Last updated
- 2018-11-07
Frequently asked questions
- What is William Chau's NPI number?
- William Chau's National Provider Identifier (NPI) is 1093169450, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Chau's specialty?
- William Chau is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is William Chau located?
- William Chau's practice location on file with NPPES is 515 Columbia Ave Ste 100, Los Angeles, CA 90017-1209.
- What is William Chau's phone number?
- The practice phone number listed in the NPPES registry for William Chau is (213) 553-1884.
- Is William Chau's NPI active?
- Yes — William Chau's NPI (1093169450) is active in the NPPES registry as of the last update on 2018-11-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.