Welcome to Alton Main Animal Hospital

We offer compassionate, expert pet care in Santa Ana and the surrounding areas. 

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NEW CLIENTS FIRST EXAM ON US!

This offer entitles any first-time pet parent to our hospital (“New Client”) a FREE EXAM for one pet. Offer contingent on purchasing other services / products, will not be applied if the dollar invoice for the visit is $0. Offer can only be redeemed one time at our location. Once a pet parent has redeemed the coupon one time, they cannot redeem the offer again. Offer excludes urgent care exams and emergency exams. Fees apply for any additional services, and/or medications as provided during the visit. Coupon must be presented at time of visit. Not valid with previous purchases. Limit one coupon per New Client. Pet parents must be 18 years or older. No cash value. Void where prohibited by law. Expires 12/31/25.

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About Alton Main Animal Hospital

Since 1986, Alton Main Animal Hospital has been known as the place for dedicated care of our four-legged family members. We approach every pet as our own and strive to provide the best patient care possible. We offer both scheduled and drop-off appointments to suit our clients’ needs and lots of snuggles to suit our patient’s needs.

At Alton Main Animal Hospital, we believe the prevention of illness is a far greater goal than the treatment of a disease that could have been prevented. We hope to team up with you, a dedicated pet owner, to achieve this goal of providing a happy, healthy life for your furry family members.

More About Us
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Pet Wellness Care

We offer a variety of care, including routine check-ups, vaccinations, routine dental cleanings, and more!

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Pet General Surgery

We perform various soft tissue surgical procedures, including spaying, neutering, and mass excisions.
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Pet Digital Radiology

Digital radiology for pets offers precise, quick, and detailed imaging for accurate diagnosis and care.

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Meet Our Veterinarians & Staff

Meet our extraordinary staff at Alton Main Animal Hospital, where our compassionate professionals are dedicated to preserving the health and happiness of your beloved animal companions. Our skilled team is eager to meet you and make Alton Main Animal Hospital your preferred veterinary care provider.

Meet The Team

Thank You for Your Kind Words

We value your confidence in us to care for your pets. We are grateful that you chose Alton Main Animal Hospital.

Read More Reviews

Kelly Clark

Doctor Shim and his staff are great! I trust them and have brought hundreds of dogs and cats here from rescue as well as my own beloved pets. I drive all the way from North OC because they’re that good.

Kyle Huh

I have been referred by my friend who had brought his dog for years and I have been coming here with my cat for about five years now.
Dr. Shim and the staff members are always friendly.

Stuart Evans

Outstanding staff! They made every effort make our experience as pleasant as possible given the situation. The facilities were clean and the doctor/staff knowlgable and caring.
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