NPIMap

Organization Active NPI

Retina Institute of California Medical Group, a California Medical Par

  • Ophthalmology Physician
  • Los Angeles, CA
National Provider Identifier
1083007140
Registry record updated Aug 1, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Ophthalmology PhysicianTaxonomy code 207W00000X
Legal business name
RETINA INSTITUTE OF CALIFORNIA MEDICAL GROUP, A CALIFORNIA MEDICAL PAR
Practice address
2400 N Broadway
Los Angeles, CA 90031-2219
Phone
(323) 221-6186
Fax
(323) 221-0738
NPI assigned
Mar 13, 2015
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Aug 1, 2025

Registry information is reported by the provider to CMS and is not verified. About this source

Authorized official

Name
Dr. Tom S Chang, MD
Title
Managing Partner
Phone
(626) 568-8838

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
OptometristGroup: 193200000X MULTI-SPECIALTY GROUP 152W00000X A69909 CA
SpecialistGroup: 193200000X MULTI-SPECIALTY GROUP 174400000X A69909 CA
Ophthalmology PhysicianGroup: 193200000X MULTI-SPECIALTY GROUP 207W00000X Primary

Addresses

Primary practice location

2400 N Broadway
Los Angeles, CA 90031-2219

Mailing address

288 N Santa Anita Ave Ste 402
Arcadia, CA 91006-3183
Phone (800) 898-2020

Other identifiers 1

IdentifierTypeStateIssuer
1760541569OtherCAGROUP NPI

Other names 1

  • Acuity Eye Group Doing business as

National Provider Directory

National Provider Directory
Tax ID family
Retina Institute of Ca37 organizations share this tax ID, including this one

Other organizations with this tax ID 36

Organizations that report the same tax identification number in the National Provider Directory.

View all 36

Practitioners & affiliated clinicians

Practitioners 2

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1426204800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1754006400000",
    "number": "1083007140",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "288 N SANTA ANITA AVE STE 402",
            "city": "ARCADIA",
            "state": "CA",
            "postal_code": "910063183",
            "telephone_number": "800-898-2020",
            "fax_number": "844-897-3788"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2400 N BROADWAY",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900312219",
            "telephone_number": "323-221-6186",
            "fax_number": "323-221-0738"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "RETINA INSTITUTE OF CALIFORNIA MEDICAL GROUP, A CALIFORNIA MEDICAL PAR",
        "organizational_subpart": "NO",
        "enumeration_date": "2015-03-13",
        "last_updated": "2025-08-01",
        "certification_date": "2025-08-01",
        "status": "A",
        "authorized_official_last_name": "CHANG",
        "authorized_official_first_name": "TOM",
        "authorized_official_middle_name": "S",
        "authorized_official_title_or_position": "MANAGING PARTNER",
        "authorized_official_telephone_number": "626-568-8838",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "152W00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Optometrist",
            "state": "CA",
            "license": "A69909",
            "primary": false
        },
        {
            "code": "174400000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Specialist",
            "state": "CA",
            "license": "A69909",
            "primary": false
        },
        {
            "code": "207W00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Ophthalmology",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "GROUP NPI",
            "identifier": "1760541569",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "Acuity Eye Group",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in Los Angeles, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 1, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.