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Health care

We provide affordable and personalized care

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Understanding coughs: Types, causes and treatments

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Financial

Accounts to help you save and pay for health care expenses

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  • Resources

    Find contribution limits, savings tools, calculators and eligible expenses

  • Account support

    Find contact information and frequently asked questions

Tax season resources

Get ready for HSA tax season

If you used an HSA this year, the HSA Tax Center offers general information about contributions, eligible expenses and commonly used tax forms — all in one place.

Visit the HSA Tax Center

Pharmacy

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  • Optum Rx

    For people with pharmacy insurance benefits through Optum Rx

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Mobile app

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Request refills, track order status, manage billing information and much more.

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Ming-Sing Si, MD

Specialty

Surgery, Thoracic Surgery (Cardiothoracic Vascular Surgery)

Languages

English

Seeing patients at

  • Gender

    Male

    Board certifications

    American Board of Surgery

    Licenses

    CA, A75671

    Network Name

    Optum Care Network California

    Hospital affiliations

    Children's Hospital Orange County (Rady Children's Hospital of Orange County)

  • Education

    Medical School

    • University of Michigan

      2008

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