Welcome to Companion Animal Hospital
Your Veterinarian in Diamond Bar CA
Call us at (909)-869-5757

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Companion Animal Hospital, located at 20935 Golden Springs Drive in Diamond Bar, has been providing quality veterinary services including diagnostics, wellness vaccinations, boarding, grooming and treatment of illnesses and injuries to pets of all types for over 30 years. 

At Companion Animal Hospital, we understand that your pet is more than just an animal, your pet is a part of your family, and we are committed to providing them the quality care they deserve and you expect.

Our approach to veterinary medicine is based on our desire to help your pet live a long, healthy life. Whether your pet walks, swims, slithers or flies, they are a vital, irreplaceable part of your life and we are honored when you entrust us with their care. Our lifelong love of all animals motivates us to keep abreast of the latest advances veterinary medicine has to offer. From our investment in state-of-the-art medical equipment to the caring, compassionate attitude of our entire staff, we strive to always deliver the best possible care for you and your pet, day or night. 

Whether administering preventative vaccinations, diagnosing an illness, treating an injury or boarding and grooming your pet, you can trust Companion Animal Hospital Inc. for all your veterinary needs.

We Speak English, Spanish, Chinese, and Korean.

Call us today at (909) 869-5757 or come by to schedule an appointment or just get to know us.


Dr. Keith Lee
Diamond Bar Veterinarian | Companion Animal Hospital | (909)-869-5757

20935 Golden Springs Dr
Diamond Bar, CA 91789

Your First Visit is FREE

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Location

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Office Hours

Our Regular Schedule

Diamond Bar Office

Monday:

8:00 am-6:00 pm

Tuesday:

8:00 am-6:00 pm

Wednesday:

8:00 am-6:00 pm

Thursday:

8:00 am-6:00 pm

Friday:

8:00 am-6:00 pm

Saturday:

8:00 am-1:00 pm

Sunday:

Closed

Testimonials

Read What Our Clients Say

  • "We have been going to Companion Animal Hospital for over two years. The staff at Companion Animal Hospital is the most caring and considerate group of people who treats all of our "kids" like they are their own. We are very fortunate to be able to call them and have them there when we needed them. Awesome service!!"
    Yoshi M.
  • "I found this place about 7 years ago when I was desperately calling around to see if a doctor would be willing to work on a Saturday to perform emergency surgery and save my pup. The receptionist called Dr. Lee and he agreed to drive back early from his church retreat for a 6 p.m. surgery ON A SATURDAY. We are in Orange County now, but we still make the drive so our sweet dog can see Dr. Lee for check-ups. I am forever grateful."
    Julia S.
  • "A few years ago we had do put our 16 yr old Charlie to sleep because he had a stroke. They were so caring and compassionate. They gave us all the time we needed with him. Now it looks like we will need to take out 15 yr old yorkie :(. We won’t take her anywhere else."
    Patricia H.