Dr. Klein received his medical degree at the S.U.N.Y. Upstate Medical Center. He completed both his internship in surgery and residency in diagnostic radiology at Harbor U.C.L.A. Medical Center, Torrance, CA.

Dr. Klein received his board certification from the American Board of Radiology in 1974. He is a member of the American College of Radiology and Radiological Society of North America. Dr. Klein joined Valley Radiologists in 1974 after completion of his fellowship in angiography at the Harbor U.C.L.A. Medical Center.