In addition, it offers physician services in subspecialty areas including pulmonology/Critical Care, endocrinology/diabetes, infectious disease, neurology, obstetrics/gynecology, psychiatry and rheumatology About the Area: Explore the contemporary system of modern structures, pockets of historical architecture, skyways and plazas. About the Group: A non-profit 900-member physician group practice serving 2,000,000 patients from 280 locations in Iowa and Illinois.