VCA California Veterinary Specialists Ontario is a specialty veterinary hospital with a dedicated team of board-certified specialists and experienced emergency clinicians. We offer Emergency & Critical Care 24/7, alongside our specialty services such as Internal Medicine, Neurology, Surgery, and advanced Imaging. Our specialty services are available by appointment.
We collaborate closely with your primary care veterinarian to ensure the best continued care for your pet. Our team of specialists, dedicated emergency clinicians, and compassionate staff provide a unique, team-based approach to referral veterinary medicine.
Location
Certified by VCA California Veterinary Specialists-Ontario • Mar 08, 2026
Certified by VCA California Veterinary Specialists-Ontario • Mar 08, 2026
Reviews
3.5
472 reviews
5 stars
270
4 stars
18
3 stars7
2 stars
20
1 star
157
CR
Cherise Rudy
3 days ago
5.0
We brought our elderly dog to VCA Ontario for a peaceful passing two months ago and they were so incredibly kind, efficient with the pre-paperwork, and provided us plenty of time to say goodbye. From the front desk staff, to the techs, to the veterinarian who administered the medication, we could not have asked for a more supportive, peaceful experience. Thank you VCA.
BB
brigid bjerke
5 days ago
1.0
Take your animal inback and after brief exam start high pressure sales for advanced tests.
CM
Carrie Madrid
Mar 1, 2026
1.0
Worst Vet office we have ever had to deal with . Waited from 4:30 pm till 11:30pm and still was not seen. Walked out with sick 13 year old blind dog. Receptionists were rude and condescending. Excuses for everything. Don’t waste your time, money or put your dogs life in their hands because you and your dog will lose.
MW
maggie wong
Feb 24, 2026
1.0
Came in because my dog was experiencing abnormal labored breathing. I wasn’t seen for two and a half hours despite there being one person in front of me. No triage no check or anything. This place should not be called an emergency vet if they don’t have the staff to support it. I think there was only one vet tech and one vet for the whole hospital. The girl at reception was really nice, unfortunately that’s the only person I interacted with for two and a half hours. Don’t bring your pets here with a true emergency, they will not see you in a timely matter.
Luckily my dog was just being dramatic because I put a sock on him and didn’t find out until 2 hours in. I left after his breathing returned to normal after I removed his sock.
BB
Brandy
Feb 11, 2026
1.0
I took my kitten, he was not doing well. It took over 2 hours of upselling and discussing “ treatments” while also talking about making tough decisions before any tests or any treatment was provided. This place was cold and I would not recommend to anyone who urgently needs their baby seen. It’s more about the money then the love for the animals.
Frequently Asked Questions About VCA California Veterinary Specialists-Ontario
What type of services does VCA California Veterinary Specialists-Ontario offer?
They offer emergency and critical care 24/7, plus specialty services like internal medicine, neurology, surgery, and advanced imaging by appointment.
What are the operating hours of VCA California Veterinary Specialists-Ontario?
The hospital is open 24 hours a day, 7 days a week for emergency services.
How can I contact VCA California Veterinary Specialists-Ontario?
You can call their main phone at +1 909-235-5452 or the local phone at +1 909-947-3600.
Where is VCA California Veterinary Specialists-Ontario located?
It is located at 2409 S. Vineyard Ave, Suite O, Ontario, CA 91761, United States.
Does VCA California Veterinary Specialists-Ontario accept credit cards for payment?
Yes, they accept American Express, Discover, Mastercard, and Visa, as well as cash and checks.
Does VCA California Veterinary Specialists-Ontario collaborate with local veterinarians?
Yes, they work closely with your primary care veterinarian to provide continuing care for your pet.
What types of animals does VCA California Veterinary Specialists-Ontario treat?
They provide specialty veterinary care mainly for cats and dogs.
Are there any nearby dining options around VCA California Veterinary Specialists-Ontario?
Yes, nearby you can visit Brandon's Diner, Flame Broiler, and Pho Viet for a variety of meal options before or after your visit.
What nearby fitness or relaxation places are close to VCA California Veterinary Specialists-Ontario?
Fit Body Bootcamp Ontario gym and V-SPA Massage and beauty salon are nearby if you'd like to relax or exercise around your visit.
Are there schools or academies near VCA California Veterinary Specialists-Ontario that families might visit?
Yes, CA Trade Academy and Mojave River Academy are local educational institutions close to the veterinary hospital.
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