Dr. Greenman received his medical degree from the University of Indiana School of Medicine. He completed his internship in diagnostic radiology, and his fellowship in interventional radiology and angiography at the Indiana University Medical Center.

Dr. Greenman received board certification from the American Board of Radiology in 1983. He is also a member of the Radiological Society of North America, American College of Radiology, Society of Cardiovascular and Interventional Radiology, and the Washington State Radiological Society. Dr. Greenman also serves as chief of staff at Auburn Regional Medical Center. Dr. Greenman joined Valley Radiologists in 1983.