Johnson Ranch Animal Clinic Large Animal Vet Contact Information Phone: (480) 987-4555 Address: 270 E Hunt Hwy #4, San Tan Valley, Arizona 85143 Get Directions About Johnson Ranch Animal Clinic is a large animal vet located in San Tan Valley, AZ. 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...