Dr. William Klein, MD, FACP, FCCP

Dr. William P. Klein has 51 years of experience in the field of Internal Medicine having expertise in Pulmonary Diseases and Critical Care. He earned his BA from Dartmouth College and his MD from the State University of New York Downstate Medical Center Brooklyn. After completing his internship and residency in Internal Medicine at SUNY Downstate Health Sciences University, he completed another residency in Internal Medicine at Jacobi Medical Center, and then he went on to complete a fellowship in Pulmonary Medicine at the same institute. Today, this expert is board certified in Internal Medicine and Pulmonary Disease. Formerly, this expert held roles as a Director of In-Patient Care at Optum, as Chief in the Department of Medicine at Huntington Beach Hospital and as Clinical Professor of Medicine in the Division of Pulmonary and Critical Care Medicine at University of California Irvine Medical Center. Currently, he serves as Associate Medical Director at Optum, as Medical Director at Concorde Career College, and as Clinical Associate Professor of Medicine at Keck School of Medicine of the University of Southern California.