Mark Tsai , MD

Male Internal Medicine

Health Plans

  • Aetna

    Plan Type: Commercial

    Member Services: 1-800-756-7039

    Region Code
    Select 1 256189
    St. Francis 2 689049
    Downey 3 838116

  • Alignment Health Plan

    Plan Type: Medicare Advantage

    Member Services: 1-866-634-2247

    Region Code
    Select 1 ACSA100227

  • Anthem Blue Cross

    Plan Type: Commercial, Exchange, Medi-Cal, Medicare Advantage

    Member Services: 1-800-627-8797

    Region Code
    Select 1 1CN250
    St. Francis 2 0SI224
    Downey 3 0RH368

  • Blue Shield

    Plan Type: Commercial

    Member Services: 1-800-393-6130

    Region Code
    Select 1 IPA-0570P4-00A818750
    St. Francis 2 IPA-0525SF-00A818750
    Downey 3 IPA-0499DS-00A818750

  • Blue Shield 65+

    Plan Type: Medicare Advantage

    Member Services: 1-800-776-4466

    Region Code
    Select 1 IPA-0570P4-00A818750
    St. Francis 2 IPA-0525SF-00A818750
    Downey 3 IPA-0499DS-00A818750

  • Blue Shield 65+ Choice

    Plan Type: Medicare Advantage

    Member Services: 1-800-776-4466

    Region Code
    Select 1 IPA-0570P4-00A818750
    St. Francis 2 IPA-0525SF-00A818750
    Downey 3 IPA-0499DS-00A818750

  • 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 0232903015
    St. Francis 2 0232903001
    Downey 3 0232903004

  • Health Net

    Plan Type: Cal MediConnect, Commercial, Medi-Cal, Medicare Advantage

    Member Services: 1-800-522-0088

    Region Code
    Select 1 3200127778
    St. Francis 2 2892127778
    Downey 3 3027127778

  • 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 991786
    St. Francis 2 991787
    Downey 3 991785

  • LA Care Health Plan

    Plan Type: Cal MediConnect, Exchange, Medi-Cal

    Member Services: 1-888-452-2273

    Region Code
    Select 1 A81875W7
    St. Francis 2 A81875Z6

  • SCAN

    Plan Type: Medicare Advantage

    Member Services: 1-800-559-3500

    Region Code
    Select 1 0795-48634

  • UnitedHealthcare

    Plan Type: Commercial, Medicare Advantage

    Member Services: 1-866-633-2446

    Region Code
    Select 1 0253270325
    St. Francis 2 0146920261
    Downey 3 0159670453

  • WellCare

    Plan Type: Medicare Advantage

    Member Services: 1-866-999-3945

    Region Code
    Select 1 ACLA3211386680
    St. Francis 2 ACSF3231386680
    Downey 3 ACD3201386680
  • 1 Select Region – Select region is a catch all for the rest of Los Angeles County and all Orange County areas. We recommend these IDs for Members who live outside of the Downey, St Francis, or Whittier region areas.
  • 2 St. Francis Region – A provider network built around our partner hospital, St Francis Medical Center, for better care coordination to members living in Lynwood and the surrounding cities.
  • 3 Downey Region – A provider network built around our partner hospital, PIH Health – Downey, for better care coordination to members living in Downey and the surrounding cities.
  • 4 Whittier Region – A provider network built around our partner hospital, Whittier Hospital Medical Center, for better care coordination to members living in Whittier and the surrounding cities.
Additional languages spoken: Mandarin
School: University of Pittsburg School of Medicine
Internship: UCLA Medical Center
Residency: UCLA Medical Center, VA Greater Los Angeles Healthcare System - West Los Angeles Healthcare Center

Call to make an appointment

1-562-634-6341

Call Optum Care Network member services

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

  • 1 Select Region – Select region is a catch all for the rest of Los Angeles County and all Orange County areas. We recommend these IDs for Members who live outside of the Downey, St Francis, or Whittier region areas.
  • 2 St. Francis Region – A provider network built around our partner hospital, St Francis Medical Center, for better care coordination to members living in Lynwood and the surrounding cities.
  • 3 Downey Region – A provider network built around our partner hospital, PIH Health – Downey, for better care coordination to members living in Downey and the surrounding cities.
  • 4 Whittier Region – A provider network built around our partner hospital, Whittier Hospital Medical Center, for better care coordination to members living in Whittier and the surrounding cities.
  • 16415 S Colorado Ave Ste 101 Paramount, CA 90723, Get Directions
    Phone: 1-562-634-6341
    MON: 9:00AM - 5:30PM
    TUE: 9:00AM - 5:30PM
    WED: 9:00AM - 5:30PM
    THU: 9:00AM - 5:30PM
    FRI: 9:00AM - 5:30PM
Additional languages spoken: Mandarin
School: University of Pittsburg School of Medicine
Internship: UCLA Medical Center
Residency: UCLA Medical Center, VA Greater Los Angeles Healthcare System - West Los Angeles Healthcare Center

©2021 Optum, Inc. All rights reserved.