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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
Insurance
Please contact the practice to confirm your health plan is accepted.
Aetna
Aetna Better Health
AHS PPO
Amerihealth
Amerihealth Caritas
Brighton Create
Brighton Healthplan Solutions
Centivo
Cigna
ClaimDoc LLC
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
4.9
- 5.0Aug 28, 2026Dr. Loventhal is a long time provider of care for my family since he joined Overlook Hospital decades ago. He is THE BEST.
- 5.0Aug 28, 2026Dr. Loventhal's staff unmatched. Very grateful for their care.
- 5.0Aug 27, 2026Dr. Lowenthal is the highest quality professional I have. He epitomizes what a professional should be - caring, kind, thorough and excellent in his field. He will be missed. 1. EXCELLENT. 2. Absolutely.
- 5.0Aug 27, 2026Dr. Lowenthal is tops! I only wish you could clone him! I have already recommended Overlook to ALL my friends & family. I travel 40 min. to you for your excellence! EXCELLENT.
- 5.0Aug 26, 2026The nurses and techs are very pleasant, and knowledgeable. I enjoy going there because the doctors are caring, extremely knowledgeable, and pleasant.
