Canyon Vista Medical Center Sierra Vista, AZ. Canyon Vista Medical Center was founded in 1963 as Western Baptist Osteopathic Hospital on what was then the eastern edge of Sierra Vista; Growth and advancing technology dictated building our new 177,000 square foot hospital at 5700 E Hwy 90. Canyonvistamedicalcenter.com DA: 32 PA: 32 MOZ Rank: 10.