Norreen Chau
NPI 1255896817 · Rehabilitation Practitioner · Santa Ana, CA
Norreen Chau is a Rehabilitation Practitioner provider in Santa Ana, CA (NPI 1255896817).
Provider details
- NPI number
- 1255896817
- Entity type
- Individual
- Primary specialty
- Rehabilitation PractitionerRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
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
7 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
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
Registry dates
- Enumerated
- 2019-02-07
- Last updated
- 2025-08-13
- Certified
- 2025-08-13
Frequently asked questions
- What is Norreen Chau's NPI number?
- Norreen Chau's National Provider Identifier (NPI) is 1255896817, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Norreen Chau's specialty?
- Norreen Chau is listed in the NPPES registry with a primary specialty of Rehabilitation Practitioner (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is Norreen Chau located?
- Norreen Chau's practice location on file with NPPES is 405 W 5th St Ste 590, Santa Ana, CA 92701-4599.
- What is Norreen Chau's phone number?
- The practice phone number listed in the NPPES registry for Norreen Chau is (714) 935-6117.
- Is Norreen Chau's NPI active?
- Yes — Norreen Chau's NPI (1255896817) is active in the NPPES registry as of the last update on 2025-08-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.