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Bonni Lee Guerin, MD
Hematology, Medical Oncology
Female
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Dr. Bonni Lee Guerin is a hematologist/oncologist and director of the Breast Cancer Treatment and Prevention Program at Overlook Medical Center, Summit, NJ where she also serves as chair of the Breast Panel, the Multidisciplinary Breast Tumor Board and director of Oncology Education. She is the principal investigator of numerous clinical trials exploring new ways to incorporate the latest advances in the management of breast cancer. She is also actively involved in the delivery of highly-specialized immunotherapy, IL-2, for the treatment of melanoma and kidney cancer.As a medical oncologist with more than 20 years of experience, Dr. Guerin is dedicated to providing the most up to date, cutting edge treatment while looking at each of her patients as an individual. Her philosophy is one of collaboration, working with all members of the care team to provide the best outcome possible. Dr. Guerin believes that compassion and being a good listener, traits she learned from her mother, help tailor a treatment plan that reflects not only the highest order of medical care, but also one that uniquely reflects each and every patient. Dr. Guerin believes it is just as much about living well as it is living long.Dr. Guerin earned her M.D. at SUNY Stonybrook in 1988, continued her residency at Vanderbilt University in Nashville and completed her fellowship in oncology/hematology at University of California San Diego Cancer Center. She is board certified in clinical oncology and internal medicine.Since 2002, Dr. Guerin has served as chair of the Women’s Oncology Forum, Network for Oncology Communication and Research (NOCR) – a national organization. She is a diplomate of the American Society of Clinical Oncology (ASCO) and is a recipient of the Pfizer Award for Excellence in Biochemical Research and a Member of the Expert Panel Consensus Guidelines for Systemic Therapy of Metastatic Renal Cell Carcinoma. She has been named by Castle Connelly as one of NY/Metro Top Doctors for the last 10 years, as well as a Top Doctor for Women's Health. She has recently been honored by Curemonos, a New Jersey non-profit organization dedicated to supporting medically underserved women with breast cancer, and was the keynote speaker at the American Cancer Society Relay for Life in Chatham, NJ. Her interests are in breast cancer, hepatobiliary cancer and immunotherapy.
SPECIALTIES
Hematology
Medical Oncology
AFFILIATIONS
Accountable Care Organization
Atlantic Medical Group
Overlook Medical Center
Where to see me
Education & Experience
TRAINING
SUNY Stony Brook
Medical School
The Vanderbilt Clinic
Residency
University of California at San Diego
Fellowship
BOARD CERTIFICATIONS
Patient Reviews
5.0
- 5.0Feb 28, 2026Dr Guerrin cares and takes her time with each patient and all aspects of my life love her
- 5.0Feb 25, 2026Being diagnosed with breast cancer is frightening and anxiety provoking but I felt so much better after meeting with Dr. Guerin. She explained everything so well, took the time to get to know me and made sure to address all of my concerns. She was warm, approachable and added a bit of humor. My husband and I felt like she was part of our family by the time we left. I felt so well cared for by the entire clinical staff. Even in the face of a scary diagnosis, I felt positive and optimistic after leaving the appointment. She is truly the best doctor I have ever encountered.
- 5.0Feb 23, 2026Dr. Guerin had a medical fellow working with her that day and she was wonderful as well. Do you only have amazing doctors on the breast cancer team?????
- 5.0Feb 23, 2026How to describe just what a wonderful doctor Dr. Guerin is??? She is obviously incredibly smart and well-informed but also has the best "bedside" manner of any doctor I've ever consulted. I have had a relatively easy time with a breast cancer caught early last summer but had some side effects that may or may not be related to a medication she prescribed. She discussed possible plans for determining the problem at length and we came up with something that left me feeling (very corny word) "empowered"! I left the office feeling encouraged and reassured.
- 5.0Feb 21, 2026I would 100% recommend.
