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SIERRA SAN ANTONIO MEDICAL PLAZA

Urgent Care Center in Fontana, California

16465 Sierra Lakes Pkwy
Fontana, CA
ZIP 92336
County: San Bernardino County
Phone: (909) 434-1150
Phone: (909) 985-2811

 This facility is open today from 9:00 am to 8:00 pm

Map and Location

Overall Rating

Star Rating

Provider Information

Sierra San Antonio Medical Plaza is an urgent care center located at 16465 Sierra Lakes Pkwy Fontana, CA 92336 . This provider is open 7 days a week. This center serves the Sierra Lakes area.

Sierra San Antonio Medical Plaza, part of the San Antonio Regional Hospital network, is an Urgent Care Center that provides modern, compassionate urgent care services to the Fontana community. The center operates under the hospital’s mission to improve health and well-being by delivering high-quality, safe, and effective care. Emphasizing patient-centered care, safety, integrity, excellence, compassion, and respect, the facility engages patients as partners in their care. It is integrated within a larger health system recognized for clinical excellence and multiple accreditations and awards, offering comprehensive urgent care alongside specialized services. The center accepts a range of insurance plans in alignment with the broader hospital network, focusing on accessible, timely care for diverse patient needs in the Inland Empire region.

Hours of Operation

Day Hours
Monday 9:00 am - 8:00 pm
Tuesday 9:00 am - 8:00 pm
Wednesday 9:00 am - 8:00 pm
Thursday 9:00 am - 8:00 pm
Friday 9:00 am - 8:00 pm
Saturday 9:00 am - 5:00 pm
Sunday 9:00 am - 5:00 pm

Care Services

  • Ambulatory care procedures and testing
  • Cardiac services including coronary artery bypass graft, cardiac arrhythmia surgery, cardiac catheterization, cardiac rehabilitation outpatient, cardiovascular surgery, implantable cardioverter defibrillator, Impella left ventricular assist device, off-pump coronary bypass surgery
  • Diagnostic and interventional radiology
  • Endoscopy and gastrointestinal diagnostics
  • Laboratory and pathology services
  • Maternity and neonatal intensive care (Healthy Beginnings Maternity, NICU, NICU Follow Up Clinic)
  • Orthopedic services including joint and shoulder replacement
  • Palliative care for chronic conditions
  • Peripheral arterial disease diagnosis and treatment
  • Physical therapy and rehabilitation
  • Surgical services including robot-assisted surgery (DaVinci Xi surgical robot).
  • Urgent care services
  • Women's breast imaging

Provider Review Consensus: What Patients Are Really Saying

How do you separate the signal from the noise? A single rave review or one unhappy comment rarely tells the whole story. That's why we've done the heavy lifting. The Provider Review Consensus synthesizes feedback from numerous patients to reveal the true patterns and what you can consistently expect. We highlight the provider's most praised qualities and any recurring concerns, giving you a clear, big-picture view to help you choose with confidence.

At Sierra San Antonio Medical Plaza, patients consistently praise their positive experiences and caring environment. With a clean and comfortable waiting area, the medical team stands out for their professionalism and genuine dedication to patient care. Whether it's for urgent care or routine visits, reviewers highlight the attentive and knowledgeable staff, including the impressive PA Alfred Amgad, who takes the time to listen to patients' concerns and provide tailored treatment. Experience a warm, welcoming atmosphere and exceptional healthcare at Sierra San Antonio Medical Plaza, where your well-being is the top priority. Visit us for a compassionate and efficient medical experience today!
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What is an urgent care center?

Urgent care centers are type of walk-in clinic open beyond typical office hours. Urgent care clinics offer a broader scope of services compared to many primary care providers.

Unlike emergency rooms urgent care centers are not open 24 hours a day. Urgent care is for injuries that are severe enough to require immediate attention, but typically not life-threatening. For more serious injuries or emergencies, it’s best to call 911 or head to the emergency room.

You should go to an urgent care center when your injury or ailment is not that severe, and you can head to your nearest urgent care center.

You will find that urgent care centers costs are much more reasonable and the level of service and wait times are far superior to the average emergency room.

All materials and services on this site are provided on an "as is" and "as available" basis without warranty of any kind. No specific endorsement of any services is given or implied. Reliance on any information provided by the Urgent Care List website or other visitors to this website is solely at your own risk.
If you think you may have a medical emergency, please call your doctor or 911 immediately.