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Retina Institute of California Medical Group

Optometrist in Calexico, CA · enumerated 2019 · authorized official Tom Chang, Managing Partner.

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

National Provider Identifier

1124676135

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Registry record

Entity type Organization (Type 2)
Legal business name Retina Institute of California Medical Group
Practice address 420 Heffernan Ave, Calexico, CA, 92231
Phone (760) 659-5546
Fax (760) 536-4172
Enumeration date Sep 3, 2019
Last updated in NPPES Sep 3, 2019

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers Primary
207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians Secondary

Authorized official

Name Tom Chang
Title Managing Partner
Phone (800) 898-2020

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?
NPPES lists Tom Chang (Managing Partner) as the authorized official for this organization.
What is the NPI number for Retina Institute of California Medical Group?
The NPI for Retina Institute of California Medical Group is 1124676135, 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 2019-09-03.