Justin M. Mann, MD

About Me

I am a radiation oncologist who specializes in using highly effective, non-invasive, and cutting-edge techniques to treat cancer. These include image-guided radiation therapyintensity modulated radiation therapystereotactic radiosurgerystereotactic body radiotherapy, and brachytherapy. As a New Jersey native, I am excited by the opportunity to provide world-class care, expertise, technology, and support at MSK Basking Ridge and MSK Monmouth.

At all MSK locations, we provide a collaborative, team-based environment. Our patients and their families are at the center of everything we do. We also have access to the most advanced radiation therapy technologies. This allows us to deliver treatment more effectively and tailor it to our patients’ needs, while also minimizing potential side effects.

Upon initially meeting with patients, they often express concern about the treatment process. Many of their concerns come from a fear of the unknown surrounding radiation therapy. My goal is to promote trust and confidence by thoughtfully and thoroughly answering every question patients and caregivers have. I want them to feel well-informed, comfortable, and empowered about their care when they leave my office.

When not attending to patient treatment and care, I enjoy traveling, hiking, reading, cooking, bicycling, and spending time with family.

  • Clinical Expertise: Image-Guided Radiotherapy (IGRT); Intensity Modulated Radiotherapy (IMRT); Stereotactic Body Radiotherapy (SBRT); Stereotactic Radiosurgery (SRS); Central Nervous System Tumors; Breast Cancer; Prostate Cancer; Head and Neck Cancer; Rectal Cancer; Anal Cancer; Lung Cancer
  • Awards and Honors: American Brachytherapy Society Prostate LDR/HDR Workshop Scholarship (2017); Radiological Society of North America Roentgen Research Award (2017); New York Weill Cornell Medical Center Alumni Council Distinguished Housestaff Award (2016); Lynn Sage Breast Cancer Symposium Scholar Award (2016); NewYork-Presbyterian/Queens Outstanding Research Award/Grant (2015); Alpha Omega Alpha (ΑΩΑ) Honor Medical Society (2012)
  • Languages Spoken: English
  • Education: MD, SUNY Upstate Medical University
  • Residencies: Radiation Oncology - NewYork-Presbyterian/Weill Cornell Medical Center


Mann JM, Wu X, Christos P, Nagar H. The State of Surgical Axillary Management and Adjuvant Radiotherapy for Early-stage Invasive Breast Cancer in the Modern Era. Clin Breast Cancer. 2017.

Reznik E, Smith AW, Taube S, Mann JM, Yondorf MZ, Parashar B, Wernicke AG. Radiation and Immunotherapy in High-grade Gliomas: Where Do We Stand? Am J Clin Oncol. 2018;41(2):197-212.

Mann JM, Ramakrishna R, Magge R, Wernicke AG. Advances in Radiotherapy for Glioblastoma. Front Neurol. 2017;8:748

Mann JM, Osian A, Brandmaier A, Yan W, Sung KJ, Siegel B, Fink S, Kaplan BH, Fulman M, Wu G, Christos P, Nori D, Ravi A. Excellent Long-term Breast Preservation Rate Following Accelerated Partial-Breast Irradiation Using a Balloon Device. Clin Breast Cancer. 2016;16(3):217-22.

Mann JM, Kellman RM, Hahn SS, De la Roza GL, Gajra A. Radiation-induced epithelial-myoepithelial carcinoma in a patient previously treated with mantle-field radiation therapy for Hodgkin lymphoma. Head Neck. 2015;37(8):E96-8.

Mattes MD, Mann JM, Ashamalla H, Tejwani A. Routine histopathologic characteristics can predict oncotype DX™ recurrence score in subsets of breast cancer patients. Cancer Invest. 2013;31(9):604-6.

Clinical Trials

As home to one of the world’s top cancer research centers, Memorial Sloan Kettering is typically involved in more than 900 clinical trials at a given time. Currently, clinical trials focused on the conditions I treat are enrolling new patients. If you’re interested in joining a clinical trial, click to learn about the trial’s purpose, eligibility criteria, and how to get more information.

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Most major health insurers offer plans that include MSK as one of their in-network providers. If MSK is in-network, it means all our doctors are too. Medicaid and New York State Medicare also provide benefits for care at MSK.

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