Diana Chau, OD
NPI 1023749041 · Optometrist · Seattle, WA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diana Chau, OD is a Optometrist provider in Seattle, WA (NPI 1023749041).
Provider details
- NPI number
- 1023749041
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Female
- Sole proprietor
- No
- License
- OD61288124 (WA)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 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)
- 9720 4th Ave NeSeattle, WA 98115-2143Phone: (206) 527-7132Fax: (206) 302-1283
Registry dates
- Enumerated
- 2022-06-21
- Last updated
- 2026-02-10
- Certified
- 2026-02-10
Frequently asked questions
- What is Diana Chau's NPI number?
- Diana Chau's National Provider Identifier (NPI) is 1023749041, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diana Chau's specialty?
- Diana Chau is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Diana Chau located?
- Diana Chau's practice location on file with NPPES is 9800 4th Ave Ne, Seattle, WA 98115-2152.
- What is Diana Chau's phone number?
- The practice phone number listed in the NPPES registry for Diana Chau is (206) 302-1200.
- Does Diana Chau accept Medicare?
- Diana Chau is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Diana Chau's NPI active?
- Yes — Diana Chau's NPI (1023749041) is active in the NPPES registry as of the last update on 2026-02-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.