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Dennis A Lowenthal, MD
Hematology, Medical Oncology
Speaks: Spanish
Male
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See Full ListAbout me
Dr. Dennis Lowenthal has dedicated his career to caring for cancer patients, particularly those with lung cancer. He is the medical director of Medical Diagnostics Associates Hematology and Oncology, which is part of the Atlantic Medical Group. He also serves as medical director of Atlantic Health System’s Carol G. Simon Cancer Center at Overlook Medical Center.Growing up in the Bronx, NY, Dr. Lowenthal attended the State University of New York at Buffalo where he graduated magna cum laude with a BA in biology. He earned his medical degree at Boston University School of Medicine, continued with a medical internship at the Cleveland Clinic, and returned to the Bronx to complete his medical residency and a hematology fellowship at Montefiore Hospital and Medical Center of the Albert Einstein College of Medicine. He subsequently completed a clinical Blood Bank Directors fellowship at the New York Blood Center and then went on to complete a medical oncology fellowship at Memorial Sloan-Kettering Cancer Center where he served as Chief Fellow and Special Clinical Fellow in AIDS-related malignancies.Dr. Lowenthal considers coming to Overlook Medical Center 32 years ago one of his best life decisions, working with his colleagues to help create 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, and has been the long-standing section chief for Hematology/Oncology. He is co-chairman of Thoracic Oncology and the Thoracic Tumor Board at Atlantic Health System and is the principal investigator for lung cancer clinical trials conducted at Overlook Medical Center – specifically, serving as the principal investigator for the first immunotherapy approved for the treatment of lung cancer. Dr. Lowenthal is a past recipient of Overlook’s Physician Excellence in Clinical Practice award and has been an associate professor of Clinical Medicine at Columbia University College of Physicians and Surgeons, Mount Sinai School of Medicine, and currently the Sidney Kimmel Medical College at Thomas Jefferson University.
SPECIALTIES
Hematology
Medical Oncology
AFFILIATIONS
Accountable Care Organization
Atlantic Medical Group
Overlook Medical Center
Where to see me
Education & Experience
TRAINING
Boston University School of Medicine
Medical School
Cleveland Clinic Hospital
Internship
Montefiore Hospital and Medical Center
Residency
Montefiore Hospital and Medical Center, Memorial Sloan Kettering Cancer Center
Fellowship
BOARD CERTIFICATIONS
Patient Reviews
5.0
- 5.0Dec 3, 2025I was called into the exam room right on time and Dr. Lowenthal came in just a few minutes later. We discussed the reason I was there and he then did the exam. He told me everything was good and wished me happy holidays.
- 5.0Nov 19, 2025Dr. Dennis Lowenthal is an excellent doctor who took good care of my medical issues. He explained well to me and listened to my questions well. Karen, the office secretary and Rebecca, the receptionist, are very helpful friendly and knowledgeable; and I thank them both. I also thank Karen for her timely replies to my questions through MyChart or phone calls.
- 5.0Nov 7, 2025I was seen by Dr. Lowenthal. He was professional and complete in his examination.
- 5.0Oct 28, 2025I have seen Dr. Lowenthal for 23 years. He has always been very attentive and knowledgeable about my condition. The good news is I no longer need to see him yearly and am thankful to have had him as my physician. He is definitely the best.
- 5.0Oct 27, 2025Excellent doctor and staff.
