• 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


    Monday - Friday
    9 am - 8 pm
      Weekends & Holidays
    9 am - 5 pm

    Click here to make your
    Urgent Care appointment today!

    Diagnostic Services and Treatment  

    • 3D Mammograms
    • Ultrasound
    • X-Ray
    • Imaging

    To schedule imaging services at any of our locations, please call 909.920.4726

    • Laboratory Services 909.434.1132
    • Physical Therapy 909.948.8080

    Click here to download the Outpatient Services map and information