Family Medicine/Internal Medicine at Ontario Medical Center
Family Medicine • Ontario, CA
Clinic Type
Family Medicine
Address
Medical Office Building A, 2295 S Vineyard Ave, Ontario, CA 91761
Phone
1-833-574-2273 (Toll free)
directoryupdate@kp.org
Opening Hours
Monday through Friday, 8:30 a.m. to 5 p.m. (general hours); After-hours: Monday through Friday, 5 p.m. to 7 p.m., by appointment only
Telehealth
not specified
Services Offered
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Insurance & Payment
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Languages Spoken
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FAQs
To find a provider's office hours, search our facility directory.
The information in this online directory can be updated periodically; contact the facility for current hours.
If you have questions, please call us at 1-800-464-4000 (toll free). For the hearing and speech impaired: 1-800-464-4000 (toll free) or TTY 711 (toll free).
Assistance is available via phone and TTY for accessibility.
Kaiser Permanente members: How to obtain a hard copy provider directory.
Call Member Services at 1-800-443-0815, seven days a week, 8 a.m. to 8 p.m., to request a hard copy; it will be mailed within three business days.
Medi-Cal Members: Will the directory show Medi-Cal pharmacies?
This directory includes Kaiser outpatient pharmacies; you can use Kaiser or Medi-Cal Rx pharmacies. For Medi-Cal Rx Pharmacy Locator see www.Medi-CalRx.dhcs.ca.gov and call 1-800-977-2273.
Are interpreter services available?
Qualified interpreter services, including sign language, are available at no cost, 24/7 during all hours of operation.
What should I do to report an error in provider or facility information?
Please contact Kaiser Permanente to report the error.
Social Media
Photos
What Patients Say
Overall sentiment across review platforms: mixed
- Birdeye/Google: 3.6/5 stars (672 reviews)
- Birdeye (Emergency Room specifically): 1.7/5 stars (131 reviews)
Patients praise
- Professional and attentive care from some staff members
- Efficient processes in specific departments like Radiology
- Individual physicians receiving high praise for bedside manner and care
Common complaints
- Long wait times in emergency and urgent care services
- Communication issues with scheduling and referrals
- Negative experiences with staff interactions in certain departments
"For me, Dr. Bonilla has been a breath of fresh air. Exasperated by uncaring doctors and their rude staff, Dr. Bonilla is the exception. My first appointment was actually a pleasant experience."
— Healthgrades review for a family medicine physician at the center"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 review for Emergency Room services"I arrived at Kaiser Urgent Care at 7am. Im the 3rd in line but my name was called around 9:30 am, stayed until past 3pm. Very long wait time for the lab, X-ray and ultrasound results to come back..."
— Birdeye review for Ontario Medical CenterSynthesized 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.
More family medicine clinics in Ontario
Summary: The Ontario.ca site is the official portal of the Government of Ontario. It offers information on programs and services for residents, including guidance on finding healthcare options. The page highlights government purpose, public service integrity, and contact details. If your goal is to find a family doctor or nurse practitioner, the site directs you to Ontario’s healthcare resources and local health information, but you’ll need to navigate to the health or primary care sections or use linked government health service pages to locate a family physician or nurse practitioner in your area. For direct assistance, you can contact the Ontario government at 1-416-212-2665.
Summary: Friends of Family Health Center operates seven offices in Southern California, including an Ontario, CA location at 1129 W 4th St, Ontario 91762. It’s a nonprofit community health center offering medical, dental, behavioral health, pediatrics, internal medicine, OB/GYN, and other services to insured and uninsured patients. Headquarters is in La Habra, CA. For Ontario-specific needs, you can contact the Ontario site or the network’s La Habra headquarters for referrals or appointments. Phone for Ontario location not listed here; main contact numbers are provided for the organization.
Comparing your options?
See other family medicine clinics in Ontario, or search the full directory by insurance, ratings, and more.