• Sierra San Antonio Medical Plaza Serving Fontana

  • Our Life's Legacy. Your Health Future.

    San Antonio Regional Hospital is growing to meet the urgent care needs in Fontana, and our promise remains the same — to carry on our tradition of modern medicine with compassion.


    Sierra San Antonio Medical Plaza

    16465 Sierra Lakes Pkwy, Fontana, CA 92336  

    Services Offered:

    Urgent Care

    909.434.1150

    Monday - Friday
    9 am - 5 pm
      Weekends & Holidays
    9 am - 5 pm
      Walk-ins
    Welcome  

    Click here to make your
    Urgent Care appointment today!