CHEA-YO CHANG O.D.
NPI 1811192289
Optometrist in Modesto, CA
About Chea-yo Chang O.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHEA-YO CHANG O.D. (NPI 1811192289) is an individual optometrist in Modesto, California, licensed in California (OPT 13626) and active in the NPI registry since June 2007. She is enrolled in Medicare PECOS and is a graduate of University Of California - School Of Optometry (2006).
NPPES Registry Identity
Specialties & Licenses
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
Chea-yo Chang O.d. 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 Reassignment
Medicare enrollment records show Chea-yo Chang reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Stockton, CA 95210
- Reassigned Medicare billing, California enrollment
- 20,078 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 95356 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.
MODESTO, CA 95356
MODESTO, CA 95356
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 Chea-yo Chang's NPI number?
The NPI number for Chea-yo Chang is 1811192289. It was assigned to this individual provider in the NPPES registry on June 18, 2007.
Where is Chea-yo Chang located?
Chea-yo Chang practices at 4601 Dale Rd 3rd Floor, Room 3a9 (eye Care Services), Modesto, CA 95356. The listed phone number is (209) 735-3133.
What is Chea-yo Chang's specialty?
The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.
Is Chea-yo Chang enrolled in Medicare?
Yes. Chea-yo Chang 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 organization bills Medicare for Chea-yo Chang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Chea-yo Chang reassigns Medicare benefits to Permanente Medical Group Inc (Stockton, CA). The 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 Chea-yo Chang'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 Chea-yo Chang was last updated on January 3, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Chea-Yo Chang, O.D. · NPI 1811192289
Optometrist provider in Modesto, California. Individual provider, active in the CMS NPPES registry since June 18, 2007.
## Identity
- **NPI:** 1811192289 (Entity type: Individual)
- **Enumerated:** June 18, 2007
- **Primary specialty:** Optometrist · taxonomy 152W00000X
- **State license:** OPT 13626 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 4601 DALE RD, 3RD FLOOR, ROOM 3A9 (EYE CARE SERVICES), Modesto, CA 95356-9718
- **Phone:** (209) 735-3133 · **Fax:** (209) 735-3155
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** Permanente Medical Group Inc (NPI 1548343510, Stockton, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California - School Of Optometry, class of 2006
## Record status
- **NPPES last updated:** January 3, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1811192289) · Data from the CMS NPPES public registry.