R. D. Halstead
Racquel Ramirez-dolleton
Rajeev K. Seth
Regional Cardiology Consultants
Retina Institute of Illinois PD
Rex C. Nzeribe
Ricardo N Nabong MD
Richard O. Cook
Robert F Hall Jr MD
Robert J. Hoshizaki
Robert L. Epstein
Robert R. Kim
Robert Schwartzenberg
Robert Turngren
Roman A. Saldan
Roman J. Dykun