Contact Us

Our Dedicated Casper Veterinarians Welcome You 

To Our Animal Hospital!

Allow us to be the first to extend a welcoming hand (or paw!) to you and your animal companion. At Westside Animal Hospital, our dedicated Casper veterinarians are serious about their clinical practice and highly compassionate toward their animal patients. We love what we do, and we're confident you will too!

If you're a pet owner living near Casper, Evansville, Brookhurst, Red Butte, Vista West, and surrounding Wyoming communities, then consider giving us a call or explore our website to learn more about us. 

Paying For Your Pet's Care: We Do Our Best to Make it as Easy as Possible!

We understand that caring for a pet, whether healthy or sick, can put even a minor strain on your budget. While we expect payment when services are rendered (not billing allows us to focus more explicitly on patient care), we are happy to accept major credit cards, debit cards, checks, and cash. With a quick application, we also can help pet owners break down certain payments into 6 easy monthly installments. Click here to learn more. 

We find that many of our pet parents prefer getting pet insurance for their animals. This gives them a little peace of mind knowing that they'll be able to care for their pets in the event of an illness or injury.

To learn more about pet insurance options, try or

We also proudly accept Care Credit

How to Prepare for Your First Visit with Our Casper Veterinarian

Your pet is a part of the family, and at our Casper animal hospital, your pet will be treated as such! If you live near Casper and other Wyoming communities, then we invite you to book an appointment at Westside Animal Hospital. Whether your pet has unique health needs or is simply in need of an annual pet wellness exam, we can connect you with a veterinarian in Casper who can help.

We'll do what we can to make booking an appointment with us as convenient as possible, which is why you can either call us at (307) 472-5600 or even schedule an appointment online.  

Go ahead, come experience the Westside difference. Our clinic is open from 7:30 a.m. to 5:30 p.m. Monday through Friday, and on Sundays from 5:00 p.m. to 5:30 p.m. We genuinely look forward to getting to know you and your animal. Call today!

Westside Animal Hospital

631 S. Ash St
Casper, WY 82601

Phone: 307-472-5600
Fax: 307-234-1915


Office Hours


7:30 am-5:30 pm


7:30 am-5:30 pm


7:30 am-5:30 pm


7:30 am-5:30 pm


7:30 am-5:30 pm




5:00 pm-5:30 pm


Read What Our Clients Say

  • "The entire team at Westside Animal Hospital is fantastic!! They take such great care of both of our dogs - young & old - routine care and/or emergencies!! Thank you to the Drs. Johannessen for all you do for our family:) Our community is truly so fortunate to have you here!"
    -Melissa Y
  • "Very good facility. Both doc's are good about giving quality time and their assistant Ashley is wonderful."
    -Victor J