Gemma Ko , MD

Female Internal Medicine

Health Plans

  • Aetna

    Plan Type: Commercial

    Member Services: 1-800-756-7039

    Region Code
    Select 1 482788
    Downey 3 486328
    Whitter 4 832016

  • AHMC

    Plan Type: Commercial

    Member Services: 1-626-300-2841

    Region Code
    Select 1 APP000215

  • Alignment Health Plan

    Plan Type: Medicare Advantage

    Member Services: 1-866-634-2247

    Region Code
    Select 1 ACSA100252

  • Anthem Blue Cross

    Plan Type: Commercial, Medicare Advantage

    Member Services: 1-800-627-8797

    Region Code
    Select 1 ZUD436

  • Blue Shield

    Plan Type: Commercial

    Member Services: 1-800-393-6130

    Region Code
    Select 1 100103282006
    Downey 3 100103282005
    Whitter 4 100103282007

  • Blue Shield 65+

    Plan Type: Medicare Advantage

    Member Services: 1-800-776-4466

    Region Code
    Select 1 100103282006
    Downey 3 100103282005
    Whitter 4 100103282007

  • Blue Shield 65+ Choice

    Plan Type: Medicare Advantage

    Member Services: 1-800-776-4466

    Region Code
    Select 1 100103282006
    Downey 3 100103282005
    Whitter 4 100103282007

  • Blue Shield Promise Health Plan

    Plan Type: Cal MediConnect

    Member Services: 1-800-544-0088

  • Cigna

    Plan Type: Commercial

    Member Services: 1-800-244-6224

    Region Code
    Select 1 3812977015
    Downey 3 3812977014
    Whitter 4 3812977016

  • Health Net

    Plan Type: Cal MediConnect, Commercial, Medicare Advantage

    Member Services: 1-800-522-0088

    Region Code
    Select 1 3200024630
    Downey 3 3027024630
    Whitter 4 3199024630

  • Health Net Salud HMO y Mas

    Plan Type: Commercial

    Member Services: 1-800-522-0088

  • Humana

    Plan Type: Medicare Advantage

    Member Services: 1-800-457-4708

    Region Code
    Select 1 992282
    Downey 3 992281
    Whitter 4 992283

  • LA Care Health Plan

    Plan Type: Cal MediConnect, Exchange, Medi-Cal

    Member Services: 1-888-452-2273

    Region Code
    Select 1 G70866W6

  • SCAN

    Plan Type: Medicare Advantage

    Member Services: 1-800-559-3500

    Region Code
    Select 1 0795-22139

  • UnitedHealthcare

    Plan Type: Commercial, Medicare Advantage

    Member Services: 1-866-633-2446

    Region Code
    Select 1 0253270302
    Downey 3 0159670415
    Whitter 4 0217360188

  • WellCare

    Plan Type: Medicare Advantage

    Member Services: 1-866-999-3945

    Region Code
    Select 1 1397261ACO325
    Downey 3 ACD3201397261
    Whitter 4 ACW3241397261
Additional languages spoken: Korean
School: University of Hawaii John A. Burns School of Medicine
Internship: University of Hawaii Integrated Medical Residency
Residency: University of Hawaii Integrated Medical Residency

Call to make an appointment

1-562-692-3388

Call Optum Care Network member services

1-800-460-5051, TTY 711
Monday – Friday, 8:00 am to 5:00 pm

  • 4511 Rosemead Blvd Pico Rivera, CA 90660, Get Directions
    Phone: 1-562-692-3388
    MON: 9:00AM - 5:00PM
    TUE: 9:00AM - 5:00PM
    WED: 9:00AM - 5:00PM
    THU: 9:00AM - 5:00PM
    FRI: 9:00AM - 5:00PM
Additional languages spoken: Korean
School: University of Hawaii John A. Burns School of Medicine
Internship: University of Hawaii Integrated Medical Residency
Residency: University of Hawaii Integrated Medical Residency

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