Please welcome our new doctors!

Dr. Luis Toro

Dr. Yolanda Cassidy

We are now OPEN on SUNDAY'S 9am-4pm 

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Welcome to Costa Mesa Animal Hospital
Your Veterinarian in Costa Mesa, CA
Call us at 949-548-3794

Pet Emergency? Read no further and call us right away!



If you live in Costa Mesa or the surrounding area in CA, then you have picked the perfect site to find a veterinarian. Drs. Timothy Donnelly, Ron Paladin, Luis Toro and Yolanda Cassidy are licensed veterinarians, treating all types of pets and animals. Your pet's health and well being is very important to us and we will take every step to give your pet the best possible care.

Costa Mesa Animal Hospital is a full service animal hospital and will take both emergency cases as well as less urgent medical, surgical, and dental issues. Drs. Timothy Donnelly, Ron Paladin, Luis Toro, and Yolanda Cassidy are experienced in all types of conditions and treatments. Beyond first rate pet care, we make our clinic comfortable, kid-friendly, and a very calm environment so your pet can relax in the waiting room and look forward to meeting his or her own Costa Mesa veterinarian.

We have a number of resources for you to learn about how to take better care of your pets. Browse around and look at our articles and pet videos. The best veterinary care for animals is ongoing nutrition and problem prevention. If you want to ask a question call 949-548-3794 or email us and we'll promptly get back to you. Our Costa Mesa veterinarian office is very easy to get to, and you can find directions on our Contact Us page. You can also subscribe to our newsletter which is created especially for Costa Mesa pet owners. In between your veterinary visits, your pet will benefit from you reading these free informative articles.

At Costa Mesa Animal Hospital, we treat your pets like the valued family members they are.

Drs. Timothy Donnelly, Ron Paladin, Luis Toro, & Yolanda Cassidy
Costa Mesa Veterinarian | Costa Mesa Animal Hospital | 949-548-3794

480 E 17th St
Costa Mesa, CA 92627


Read What Our Clients Say

  • "Whenever my cats are in need of Veterinary Services I feel comforted in knowing that they are in experienced and dedicated hands at Costa Mesa Animal Hospital. I have been a client here for the past 18 years and highly recommend Dr. T Donnelly, Dr. Paladin and Dr. S. Donnelly along with their friendly support staff to provide exceptional care for your pet."
    Darlene B. Costa Mesa, CA

Office Hours

Our Regular Schedule


7:00 am-7:00 pm


7:00 am-7:00 pm


7:00 am-7:00 am


7:00 am-7:00 am


7:00 am-7:00 am


9:00 am-4:00 pm


9:00 am-4:00 pm

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