North Fontana
Mon and Tues: 8-7; Wed-Fri: 8-6; Sat: 9-4

Veterinarians arrive at 9 am for appts & walk-ins
(909) 329-2860
South Fontana
Mon,Tues,Fri: 8-6; Wed,Thurs: 8-7; Sat: 9-4
Veterinarians arrive at 9 am for appts & walk-ins
(909) 357-7300
XPAH Updates:Read more about the measures we are taking for the Coronavirus (COVID-19)here


Dr. Colley

Patricia Colley had always wanted to be a veterinarian but changed her major in college to Agricultural Business Management.  However, after being in banking for 10 years, she decided to become a veterinarian.  So, with the help and support of husband and family, she graduated from UC Davis in 1996 with a degree in Veterinary Medicine, and in 1997, received her Masters in Preventive Veterinary Medicine.  Her thesis was on the elemental composition of cat teeth with and without feline resorptive lesions, which was published in the American Journal of Veterinary Research. 

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Dr. Margarita Pinto

Dr. Pinto was born and raised in the San Fernando Valley of Southern California. She knew she wanted to be a veterinarian at a very young age and her parents helped cultivate her love for animals. She grew up surrounded by dogs, chickens, rabbits, tortoises, pocket pets, and birds. She has been working in animal hospitals since she was 17 years old.

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Dr. Liana Chang

Dr. Chang was born in Los Angeles and raised in Fullerton, CA. She first decided to become a veterinarian at the age of 16 when she took a veterinary science elective course in high school and enjoyed it so much that she started to volunteer at an animal hospital. Dr.

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