Blood Disorders & Cancer Care

Dennis Lowenthal, MD

Assistant Medical Director of the Cancer Center at Overlook Medical Center, Co-Chair, Thoracic Panel, Section Chief, Hematology/Oncology

Dr. Lowenthal obtained his medical degree from Boston University School of Medicine in 1979. He completed his Medical and Hematology training at Montefiore Hospital and Medical Center in New York and subsequent Oncology training at Memorial Sloan Kettering Cancer Center, where he was appointed Chief Fellow in Medical Oncology. Dr. Lowenthal currently is the Medical Director of the Carol G. Simon Cancer Center at Overlook Medical Center.

He serves as Chairman of the hospital’s Cancer Committee and Cancer Center Executive Committee, as well as serving as Assistant Clinical Professor of Medicine at The Mount Sinai School of Medicine. Dr. Lowenthal has had a long-standing interest in lung cancer and chairs the hospital’s Thoracic Oncology tumor board. He serves as the Principal Investigator heading the Nivolumab clinical trial at Overlook Medical Center, the first immunotherapy approved for the treatment of lung cancer.

Office Locations

Carol G. Simon Cancer Center at Overlook Medical Center
99 Beauvoir Avenue, Summit, NJ 07901
Phone: (908) 608-0078 •   Fax: (908) 608-1504
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New Location

Atlantic Medical Group Hematology Oncology- MDA Union Campus
1000 Galloping Hill Road, Suite 204, Union, NJ 07083
Phone (908) 608-0078
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Medical Oncology
Internal Medicine


State University of New York at Buffalo, New York - Bachelor of Arts in Biology

Medical Training

Boston University School of Medicine, Massachusetts


The Cleveland Clinic, Cleveland, Ohio, Intern in Internal Medicine

Montefiore Hospital and Medical Center, Bronx, New York - Resident in Internal Medicine


Montefiore Hospital and Medical Center, Bronx, New York - Fellow in Hematology

The New York Blood Center, New York, New York - The Blood Bank Directors Training Fellowship

Memorial Sloan-Kettering Cancer Center, New York, New York - Fellow in Medical Oncology, Chief Fellow in Medical Oncology, Special Clinical Fellow, Hematology-Lymphoma Service