BRIAN CHON MD
NPI 1679990626
Ophthalmology in Walnut Creek, CA
About Brian Chon Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
BRIAN CHON MD (NPI 1679990626) is an individual ophthalmology provider in Walnut Creek, California, licensed in California (C194049) and active in the NPI registry since March 2014. He is enrolled in Medicare PECOS and is a graduate of Duke University School Of Medicine (2014).
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Brian Chon Md 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.
Medicare Billing Reassignments
3Medicare enrollment records show Brian Chon reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Richmond, CA 94801
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
Hawthorne, NY 10532
- Reassigned Medicare billing, New York enrollment
- 6 clinicians in this Medicare group
Rockville Centre, NY 11570
- Reassigned Medicare billing, New York enrollment
- 134 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94598 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
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.
WALNUT CREEK, CA 94598
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 Brian Chon's NPI number?
The NPI number for Brian Chon is 1679990626. It was assigned to this individual provider in the NPPES registry on March 27, 2014.
Where is Brian Chon located?
Brian Chon practices at 320 Lennon Ln, Walnut Creek, CA 94598. The listed phone number is (925) 906-2010.
What is Brian Chon's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is Brian Chon enrolled in Medicare?
Yes. Brian Chon 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.
Which organizations bill Medicare for Brian Chon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Brian Chon reassigns Medicare benefits to 3 organizations: Permanente Medical Group Inc (Richmond, CA), Hudson Valley Eye Associates LLP (Hawthorne, NY) and Ophthalmic Consultants Of Long Island (Rockville Centre, NY). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Brian Chon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Brian Chon was last updated on April 20, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Brian Chon, MD · NPI 1679990626
Ophthalmology physician in Walnut Creek, California. Individual provider, active in the CMS NPPES registry since March 27, 2014.
## Identity
- **NPI:** 1679990626 (Entity type: Individual)
- **Enumerated:** March 27, 2014
- **Primary specialty:** Ophthalmology · taxonomy 207W00000X
- **State license:** C194049 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 320 LENNON LN, Walnut Creek, CA 94598-2419
- **Phone:** (925) 906-2010
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Permanente Medical Group Inc (NPI 1235226531, Richmond, CA); Hudson Valley Eye Associates LLP (NPI 1386674489, Hawthorne, NY); Ophthalmic Consultants Of Long Island (NPI 1285675660, Rockville Centre, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Duke University School Of Medicine, class of 2014
## Record status
- **NPPES last updated:** April 20, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1679990626) · Data from the CMS NPPES public registry.