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About Us

About East Valley Emergency Pet Clinic

The San Gabriel Valley is a massive area stretching from east of Los Angeles all the way to the Inland Empire in Southern California. It's nearly 400 square miles, and home to around 2 million residents -- or roughly one-fifth of L.A. County's entire population. 

East Valley Emergency Pet Clinic in Diamond Bar is proud to serve so many California residents and their pets. We've been here since we first opened our doors in 1987, providing emergency, critical care, and urgent care services for sick and injured animals.

We're here because we know you've been there -- those weeknights, weekends and all holidays when you've needed an emergency veterinarian and had no time to waste. Now and whenever you need us, our doors will be open.

What We Do When You Need Emergency Pet Care

Whether it's 8 p.m. or the middle of the night, our clinic is designed to function as an extension of your primary veterinarian.  Just think of the care we provide as an addendum to the services they already provide. 

We open our doors at 6 p.m. on weeknights, and we're open 24 hours on weekends. Upon intake of your pet for emergency care, we'll provide an estimate of the fees on your hospitalized animal and an itemized receipt upon discharge. An initial deposit is required for the care, and all services must be paid in full before your pet can be released from our clinic. This policy allows us to provide the highest level of care and keep fees at a minimum.

When necessary, an attempt will be made to discuss your pet's care with your regular veterinarian to ensure consistent care. It is our expectation you'll consult with them for follow-up and continued care as needed upon leaving our clinic.

Learn More About Our Services

Our veterinarians and staff at East Valley Emergency Pet Clinic are here to provide optimal care for your pet in the most uncommon of circumstances. We treat pets in true emergency situations, such as after a vehicle hits them, if they've ingested a toxin, or are suffering from a serious medical ailment such as organ failure.  Our critical care team is equipped with the latest technology, including digital ultrasound, for immediate diagnostics. We can perform surgery, set broken bones, and so much more.

We Are Your Emergency Veterinarian

We understand your pet is a beloved member of your family, and we truly hope there is never an occasion when our services are needed.  Should that moment occur, we hope you will choose East Valley Emergency Pet Clinic in Diamond Bar, CA. You can call anytime at (909) 861-5737.

Office Hours

Our Regular Schedule


6:00 pm-8:00 am


6:00 pm-8:00 am


6:00 pm-8:00 am


6:00 pm-8:00 am


6:00 pm


All Day


All Day

  • Meet The Team

    I love coming to work everyday! Ever since I started working here at East Valley Emergency Pet Clinic I have been reading and learning as much as I can about pet health and well being. Now my pets and I are living a healthier life and can pass my knowledge and experience to other families so they too can discover wellness!

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