James Chau, M.D.
NPI 1285727784 · Family Medicine Physician · Santa Ana, CA
James Chau, M.D. is a Family Medicine Physician provider in Santa Ana, CA (NPI 1285727784).
Provider details
- NPI number
- 1285727784
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A96999 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$323 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-02
- Last updated
- 2014-09-17
Frequently asked questions
- What is James Chau's NPI number?
- James Chau's National Provider Identifier (NPI) is 1285727784, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Chau's specialty?
- James Chau is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is James Chau located?
- James Chau's practice location on file with NPPES is 1400 N Main St, Santa Ana, CA 92701-2304.
- What is James Chau's phone number?
- The practice phone number listed in the NPPES registry for James Chau is (714) 541-6815.
- Is James Chau's NPI active?
- Yes — James Chau's NPI (1285727784) is active in the NPPES registry as of the last update on 2014-09-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.