CHANGYOW KWAN
NPI 1588110423
Ophthalmology in Irvine, CA
About Changyow Kwan NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHANGYOW KWAN (NPI 1588110423) is an individual ophthalmology provider in Irvine, California, licensed in California (A187362) and active in the NPI registry since August 2016. She is enrolled in Medicare PECOS, maintains a secondary practice location in Chicago, and is a graduate of Other (2020).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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
Changyow Kwan 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
2Medicare enrollment records show Changyow Kwan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Orange, CA 92868
- Reassigned Medicare billing, California enrollment
- 113 clinicians in this Medicare group
Monterey Park, CA 91754
- Reassigned Medicare billing, California enrollment
- 14 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 92617 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.
IRVINE, CA 92617
IRVINE, CA 92617
IRVINE, CA 92617
IRVINE, CA 92617
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 Changyow Kwan's NPI number?
The NPI number for Changyow Kwan is 1588110423. It was assigned to this individual provider in the NPPES registry on August 31, 2016.
Where is Changyow Kwan located?
Changyow Kwan practices at 850 Health Sciences Rd, Irvine, CA 92617. The listed phone number is (949) 824-2020.
What is Changyow Kwan's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is Changyow Kwan enrolled in Medicare?
Yes. Changyow Kwan 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 Changyow Kwan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Changyow Kwan reassigns Medicare benefits to 2 organizations: Regents Of The University Of California (Orange, CA) and Regional Eyecare Services PC (Monterey Park, CA). 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 Changyow Kwan'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 Changyow Kwan was last updated on July 15, 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.
# Changyow Kwan · NPI 1588110423
Ophthalmology physician in Irvine, California. Individual provider, active in the CMS NPPES registry since August 31, 2016.
## Identity
- **NPI:** 1588110423 (Entity type: Individual)
- **Enumerated:** August 31, 2016
- **Primary specialty:** Ophthalmology · taxonomy 207W00000X
- **State license:** A187362 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 850 HEALTH SCIENCES RD, Irvine, CA 92617-3058
- **Phone:** (949) 824-2020
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Regents Of The University Of California (NPI 1871541953, Orange, CA); Regional Eyecare Services PC (NPI 1093411969, Monterey Park, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2020
## Record status
- **NPPES last updated:** July 15, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1588110423) · Data from the CMS NPPES public registry.