East Slope Veterinary Service Large Animal Vet Contact Information Phone: (406) 466-3020 Address: 302 Main Ave S, Choteau, Montana 59422 Get Directions About East Slope Veterinary Service is a large animal vet located in Choteau, MT. Loading... No Records Found Sorry, no records were found. Please adjust your search criteria and try again. Maps failed to load Sorry, unable to load the Maps API. Claim Listing Recently Viewed: Loading...