Retina Specialists of Orange County, Inc.

Primary specialty

Retina Specialist (Ophthalmology) PhysicianTaxonomy code 207WX0107X

Legal business name

RETINA SPECIALISTS OF ORANGE COUNTY, INC.

Practice address

1310 W Stewart Dr Ste 303
Orange, CA 92868-3838

Phone

(714) 738-4621

Fax

(714) 409-0629

NPI assigned

Oct 8, 2024

Organization subpart

No

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

Authorized official

Name

Mark WilliamsNPI 1780118802

Title

Director

Phone

(714) 738-4621

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

Enrollment records 1

Interoperability endpoints

• Direct secure messaging: mwilliams@retspecoc.intellechartdirect.net

Practitioners 1

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

• Mark Tony Williams, M.D.

  • Retina Specialist (Ophthalmology) Physician
  • Orange, CA
  • NPI 1780118802

  Multi-Specialty

  Medicare reassignment NPD Authorized official

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

{
    "created_epoch": "1728345600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1787184000000",
    "number": "1629897517",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 104797",
            "city": "PASADENA",
            "state": "CA",
            "postal_code": "911890426",
            "telephone_number": "714-738-4621"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1310 W STEWART DR STE 303",
            "city": "ORANGE",
            "state": "CA",
            "postal_code": "928683838",
            "telephone_number": "714-738-4621",
            "fax_number": "714-409-0629"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "RETINA SPECIALISTS OF ORANGE COUNTY, INC.",
        "organizational_subpart": "NO",
        "enumeration_date": "2024-10-08",
        "last_updated": "2026-08-20",
        "certification_date": "2026-08-20",
        "status": "A",
        "authorized_official_last_name": "WILLIAMS",
        "authorized_official_first_name": "MARK",
        "authorized_official_title_or_position": "DIRECTOR",
        "authorized_official_telephone_number": "714-738-4621"
    },
    "taxonomies": [
        {
            "code": "207W00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Ophthalmology",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207WX0107X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Ophthalmology, Retina Specialist",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Restorations Health Care LLC.
• Heather Retama
• Marco Antonio Retiguin
• Retina Associates Medical Group Inc (The Retina Institute)
• Retina Associates Medical Group, Inc. (The Retina Institute)
• Mark A Rettenmaier, M.D.
• Ganna Revega
• Jourdin Rachael Revels
• Jaquelin Reyes -Rios
• Magda Yazmin Reyes Rodriguez

• Retina Specialist (Ophthalmology) Physician in Orange, CA
• Providers in Orange, CA by specialty
• Retina Specialist (Ophthalmology) Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 20, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.