Tri State Orthopedic Institute Share: Hospitals & Clinics Tri State Orthopedic Institute Visit Website 2000 Highway 95 Suite 200 Bullhead City, AZ 86442 (928) 758-1175 (928) 758-5191 (fax) Www.Drrobertlock.com Hours: Monday-Thursday 8:00 AM to 5:00 PM Map What's Nearby? Distance: 5 10 15 20 25 50 mi.