DR. DIANA CHAU OD
NPI 1023749041
Optometrist in Seattle, WA
About Dr. Diana Chau Od NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. DIANA CHAU OD (NPI 1023749041) is an individual optometrist in Seattle, Washington, licensed in Washington (OD61288124) and active in the NPI registry since June 2022. She is enrolled in Medicare PECOS, maintains a secondary practice location in Seattle, and is a graduate of Southern California College Of Optometry (2022).
NPPES Registry Identity
Specialties & Licenses
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Diana Chau Od is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98115 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
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 Diana Chau's NPI number?
The NPI number for Diana Chau is 1023749041. It was assigned to this individual provider in the NPPES registry on June 21, 2022.
Where is Diana Chau located?
Diana Chau practices at 9800 4th Ave NE, Seattle, WA 98115. The listed phone number is (206) 302-1200.
What is Diana Chau's specialty?
The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.
Is Diana Chau enrolled in Medicare?
Yes. Diana Chau is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
When was this NPI record last updated?
The NPPES record for Diana Chau was last updated on February 10, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.
