NPIMap

Organization Active NPI

Retina Institute of California Medical Group, a California Medical Par

Doing business as Acuity Eye Group

  • Optometrist
  • Lancaster, CA
National Provider Identifier
1801289962
Registry record updated Aug 1, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
OptometristTaxonomy code 152W00000X
License
A69909 Issued in CA
Legal business name
RETINA INSTITUTE OF CALIFORNIA MEDICAL GROUP, A CALIFORNIA MEDICAL PAR
Doing business as
Acuity Eye Group
Practice address
44815 Fig Ave
Lancaster, CA 93534-3144
Phone
(661) 206-8469
Fax
(661) 206-8924
NPI assigned
Mar 13, 2015
Last updated
Aug 1, 2025By the provider in NPPES
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
Tom S Chang, MDNPI 1609848969
Title
Owner/Founder
Phone
(800) 898-2020

Authorized official NPPES reports the official by name only. The link goes to the one practitioner with that name whose NPPES practice address or phone number is this organization’s.

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Optometrist 152W00000X A69909 CA Primary
Ophthalmology Physician 207W00000X NU

Addresses

Primary practice location

44815 Fig Ave
Lancaster, CA 93534-3144

Mailing address

100 E California Blvd
Pasadena, CA 91105-3205
Phone (626) 568-8838

Other identifiers 1

IdentifierTypeStateIssuer
1760541569OtherCAGROUP NPI

Other names 1

  • Acuity Eye Group Doing business as

National Provider Directory

National Provider Directory

Member organizations 2

Organizations listed as members of this organization in the National Provider Directory.

Practitioners & affiliated clinicians

Practitioners 3

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

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": "1801289962",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "100 E CALIFORNIA BLVD",
            "city": "PASADENA",
            "state": "CA",
            "postal_code": "911053205",
            "telephone_number": "626-568-8838",
            "fax_number": "626-574-7188"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "44815 FIG AVE",
            "city": "LANCASTER",
            "state": "CA",
            "postal_code": "935343144",
            "telephone_number": "661-206-8469",
            "fax_number": "661-206-8924"
        }
    ],
    "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": "OWNER/FOUNDER",
        "authorized_official_telephone_number": "800-898-2020",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "152W00000X",
            "taxonomy_group": "",
            "desc": "Optometrist",
            "state": "CA",
            "license": "A69909",
            "primary": true
        },
        {
            "code": "207W00000X",
            "taxonomy_group": "",
            "desc": "Ophthalmology",
            "state": "NU",
            "license": null,
            "primary": false
        }
    ],
    "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 Lancaster, 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.