INTEGRIS Baptist Medical Center Portland Avenue is a 238-bed acute-care hospital offering a full range of health services to Oklahoma City and surrounding communities. For over 114 years our dedicated staff of experienced healthcare professionals has taken pride in providing the quality health services you need. We are committed to continually improving the services for you and your family. INTEGRIS Baptist Medical Center Portland Avenue is located in northwest Oklahoma City. The campus is just west of Lake Hefner Parkway (Highway 74) and south of Northwest Expressway, on Portland Ave. The address is 5501 N. Portland.