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Retina Institute of California Medical Group, A California Medical Par

Ophthalmology Physician in Santa Ana, CA · enumerated 2015 · authorized official Tom Chang, Founder.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1124411285

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Registry record

Entity type Organization (Type 2)
Legal business name Retina Institute of California Medical Group, A California Medical Par
Other name <Unavail>
Practice address 1403 N Tustin Ave Ste 399, Santa Ana, CA, 92705
Phone (714) 884-3961
Fax (714) 884-3458
Enumeration date Mar 13, 2015
Last updated in NPPES Sep 22, 2021

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers · License A69909 (CA) Secondary
207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Tom Chang
Title Founder
Phone (626) 568-8838

Other identifiers

Identifier Type State Issuer
1760541569 Other CA GROUP NPI

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Who is the authorized official for Retina Institute of California Medical Group, A California Medical Par?
NPPES lists Tom Chang (Founder) as the authorized official for this organization.
What is the NPI number for Retina Institute of California Medical Group, A California Medical Par?
The NPI for Retina Institute of California Medical Group, A California Medical Par is 1124411285, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-09-22.