Leonard M. Klein, M.D.


Medical Oncology

Primary Location

8915 W. Golf Rd.
Niles, IL 60714

Phone Number

(847) 827-9060

Leonard M. Klein, M.D.


Barnes Hospital, St. Louis, MO; City of Hope Medical Center, Los Angeles, CA

Hospital Affiliations

Advocate Lutheran General Hospital
Northwest Community Hospital

Board Certification

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. .

Dr. Klein’s major clinical and research interests include the diagnosis and treatment of breast cancer, stem cell transplants, multiple myeloma, and colorectal cancer. Originally from New York City, he and his family have been living in Chicago since 1982. He believes in individualized, personalized, and compassionate care for his patients.