Family Medicine/Internal Medicine at Ontario Medical Center
Primary Care • Ontario, CA
Clinic Type
Primary Care
Address
2295 S Vineyard Ave, Ontario, CA 91761
Phone
1-833-574-2273
directoryupdate@kp.org
Opening Hours
Monday through Friday, 8:30 a.m. to 5 p.m. (clinic); After-hours: Monday through Friday, 5 p.m. to 7 p.m., by appointment only
Emergency Care
After-hours: Monday through Friday, 5 p.m. to 7 p.m., by appointment only
Services Offered
Insurance & Payment
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Languages Spoken
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FAQs
What are the hours of operation?
Monday through Friday, 8:30 a.m. to 5 p.m.
What is the after-hours availability?
After-hours: Monday through Friday, 5 p.m. to 7 p.m., by appointment only
Social Media
Photos
What Patients Say
Overall sentiment across review platforms: mixed
- Birdeye/Google aggregate: 3.6/5 (672 reviews)
- Birdeye/Google (Emergency Room specific): 1.7/5 (131 reviews)
Patients praise
- Hospital has earned an 'A' grade for patient safety for multiple consecutive rounds
- Recognized as a Top Hospital by the Leapfrog Group in recent years
- Professional and attentive care reported by some patients and staff members
- Efficient pharmacy service and helpful lab staff mentioned in select reviews
Common complaints
- Long wait times in the Emergency Room and for appointments
- Poor communication and difficulty navigating the scheduling/referral process
- Rude or unhelpful staff interactions in certain departments like the pharmacy
- Instances of perceived lack of urgency or clinical errors in the ER
"Came in ambulance at 3:20pm and did not get pain meds until 6:05pm. Per nurse, 3 drs called off... Extreme pain, sweating, vomiting and crying until 6:20 when morphine kicked in."
— Birdeye Review"I had a very positive experience at Kaiser’s Emergency Department. The staff was professional, attentive, and moved quickly while still taking the time to explain what was going on."
— Birdeye ReviewSynthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].
In the News
- Dr. Guillermo V. Amurao, MD - Internal Medicine Physician in Ontario, OH — May 14, 2026
- Dr. Ronald L. Casey, MD - Internal Medicine Physician in Galion, OH — May 14, 2026
- Dr. Hedy C. Loa, MD - Internal Medicine Physician in Ontario, CA — May 14, 2026
- Dr. Michael H. Mun, DO - Internal Medicine Physician in Ontario, CA — May 14, 2026
- Dr. Edward U. Oh, MD - Internal Medicine Physician in Ontario, CA — May 14, 2026
Information sourced from the clinic's website as of July 11, 2026.
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