Small Animal Services
Wellness exams, vaccinations, dentistry, surgery, in-house diagnostic radiology and ultrasound, allergy testing, parasite control, and end-of-life care — under one roof.
Explore small-animal careMission Valley Veterinary Clinic has been providing animal care in the Valley since 1941. We are a mixed practice vet clinic with mobile services available — caring for dogs, cats, cattle, horses, and the families who love them.
Mission Valley Veterinary Clinic has been providing animal care in the Valley since 1941. We are a mixed practice vet clinic with mobile services available. Our goal is to provide compassionate and progressive veterinary care for our community. We believe delivering high quality care to animals will improve their life, and therefore the lives of their humans.
Our clinic is the brown, wooden building at the intersection of Highway 93 and Timberlane Road, at the south end of Ronan between Cenex and Don Aadsen Ford.
Please call (406) 676-4251 or Email Us to set up an appointment, or if you have any questions.
We look forward to hearing from you!
Mission Valley is a mixed practice. That means the cat in your kitchen and the cattle in your back forty get the same vet — Dr. Detwiler.
Wellness exams, vaccinations, dentistry, surgery, in-house diagnostic radiology and ultrasound, allergy testing, parasite control, and end-of-life care — under one roof.
Explore small-animal care
Herd health, fertility testing, calving, BSE / bull testing, equine floats, vaccinations, and on-the-ranch mobile visits across the Mission Valley.
Explore large-animal careDr. Detwiler is the owner and sole veterinarian. Around him: Debbie (our clinic mom), Nicole at the front desk, Shelby in the back — and a small staff of clinic cats and dogs who consider this place their home.
Meet everyone


Look for the brown, wooden building at the intersection of Highway 93 and Timberlane Road — the south end of Ronan, between Cenex and Don Aadsen Ford.
During open hours, we try to see all our own patients' emergencies. Limited 24-hour on-call services are available — call the clinic first.