Pony Express Veterinary Clinic Large Animal Vet Contact Information Phone: (785) 562-3591 Address: 1112 Pony Express Hwy, Marysville, Kansas 66508 Get Directions About Pony Express Veterinary Clinic is a large animal vet located in Marysville, KS. 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...