Tucson, Arizona 85701 (520) 309-4200. Hours:* Monday - Friday 8 AM - 5 PM Saturday 8 AM - 12PM Lab Hours: Monday - Friday 8 AM - 4 PM *(On the 1st and 3rd Wednesdays of the month, the Health Center will open at 9am) HealthOn Broadway is an integrated health and wellness collaboration between Tucson Medical Center and El Rio Health..