RETINA INSTITUTE OF CALIFORNIA MEDICAL GROUP, A CALIFORNIA MEDICAL PAR
NPI 1760541569
Ophthalmology in Pasadena, CA
About Retina Institute Of California Medical Group, A California Medical Par NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RETINA INSTITUTE OF CALIFORNIA MEDICAL GROUP, A CALIFORNIA MEDICAL PAR (NPI 1760541569), doing business as Acuity Eye Group, is a healthcare organization registered as an ophthalmology in Pasadena, California and active in the NPI registry since December 2006. The organization lists Tom S Chang, Owner, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 2
Other Names 2
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Retina Institute Of California Medical Group, A California Medical Par is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
83Medicare enrollment records show 83 clinicians reassign Medicare billing to Retina Institute Of California Medical Group, A California Medical Par, which bills Medicare for the services they deliver. Of these, 4 practice at this address and 13 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 3
Nearest to this location (20)
See all 83Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Retina Institute Of California Medical Group, A California Medical Par's NPI number?
The NPI number for Retina Institute Of California Medical Group, A California Medical Par is 1760541569. It was assigned to this organization in the NPPES registry on December 7, 2006. The provider is doing business as Acuity Eye Group and Acuity Optical.
Where is Retina Institute Of California Medical Group, A California Medical Par located?
Retina Institute Of California Medical Group, A California Medical Par is located at 100 E California Blvd, Pasadena, CA 91105. The listed phone number is (800) 898-2020.
What is Retina Institute Of California Medical Group, A California Medical Par's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is Retina Institute Of California Medical Group, A California Medical Par enrolled in Medicare?
Yes. Retina Institute Of California Medical Group, A California Medical Par is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Retina Institute Of California Medical Group, A California Medical Par?
According to the CMS Revalidation Reassignment List (October 2026 release), 83 clinicians in 3 Medicare specialties reassign their Medicare billing to Retina Institute Of California Medical Group, A California Medical Par. A 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 the clinician's services. The largest specialties are Ophthalmology (46), Optometry (36) and Plastic and Reconstructive Surgery (1). Of these, 4 practice at this address and 13 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Retina Institute Of California Medical Group, A California Medical Par accept?
Health plans from Anthem Blue Cross and Blue Shield, Blue Cross Blue Shield of Wyoming, Blue Cross and Blue Shield of Louisiana, Blue Cross and Blue Shield of Montana and Blue Cross and Blue Shield of Oklahoma and 2 other insurers list Retina Institute Of California Medical Group, A California Medical Par as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Retina Institute Of California Medical Group, A California Medical Par was last updated on August 1, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months 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.
# Retina Institute Of California Medical Group, A California Medical Par · NPI 1760541569
Ophthalmology organization in Pasadena, California. Organization record, active in the CMS NPPES registry since December 7, 2006.
## Identity
- **NPI:** 1760541569 (Entity type: Organization)
- **Enumerated:** December 7, 2006
- **Primary specialty:** Ophthalmology · taxonomy 207W00000X
- **Also known as:** Acuity Eye Group (Doing Business As); Acuity Optical (Doing Business As)
- **Organization subpart:** No
- **Authorized official:** Tom Chang, OWNER
## Practice location
- **Address:** 100 E CALIFORNIA BLVD, Pasadena, CA 91105-3205
- **Phone:** (800) 898-2020 · **Fax:** (844) 897-3788
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 83 clinicians in 3 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Ophthalmology (46), Optometry (36), Plastic and Reconstructive Surgery (1); 4 practice at this address and 13 within 10 miles; [full list](https://npiprofile.com/npi/1760541569/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 1, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1760541569) · Data from the CMS NPPES public registry.