8915 W. Golf Rd.
Niles, IL 60714
Leonard M. Klein, M.D.
Barnes Hospital, St. Louis, MO; City of Hope Medical Center, Los Angeles, CA
Advocate Lutheran General Hospital
Northwest Community Hospital
Board Certified Hematology
Board Certified Medical Oncology
Board Certified Internal Medicine
Dr. Klein is a member of the American Society of Clinical Oncology, American Society of Hematology and American Society of Breast Cancer. .