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Retina Institute of California Medical Group, A California Medical Par

Ophthalmology Physician in La Jolla, CA · enumerated 2020 · authorized official Tom Chang, Co-Ceo, Managing Partner.

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

National Provider Identifier

1003449604

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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 9834 Genesee Ave Ste 428, La Jolla, CA, 92037
Phone (858) 457-3010
Fax (858) 457-0028
Enumeration date Feb 21, 2020
Last updated in NPPES Jul 12, 2021

Taxonomy & classification

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

Authorized official

Name Tom Chang
Title Co-Ceo, 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

What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.
What type of organization is Retina Institute of California Medical Group, A California Medical Par?
Retina Institute of California Medical Group, A California Medical Par is registered in NPPES as a Ophthalmology Physician (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-07-12.