Marisa A. Kollmeier, MD

Marisa A. Kollmeier, MD

Radiation Oncologist

Clinical Expertise

Prostate, Bladder, and Testicular Cancers; Gynecologic Cancers; Palliative Radiation Therapy

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Accepted Insurance Providers

Dr. Kollmeier accepts the following list of insurance providers. Select your insurance provider to see more details.

Contact and Location

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Find a Convenient Location

Memorial Sloan Kettering has locations throughout New York City, Long Island, New Jersey, and Westchester. These locations offers many services, including screening, chemotherapy, and medical testing.

About Me


MD, Sackler School of Medicine


Radiation Oncology - Mount Sinai School of Medicine

Board Certifications

Radiation Oncology

I am a board-certified radiation oncologist with particular clinical and research interest in genitourinary and gynecologic malignancies. We strongly believe in a multidisciplinary approach to these cancers in order to improve outcomes and reduce toxicity of therapy.  My colleagues and I use sophisticated radiation technology — including image-guided brachytherapy, intensity-modulated radiation therapy (IMRT) and image-guided radiation therapy (IGRT) — to optimize therapeutic outcomes while minimizing normal tissue toxicity.

My primary interests include the integration of brachytherapy into the management of genitourinary and gynecologic cancers. Brachytherapy allows the delivery of high doses of radiation directly to tumors with only a  minimal dose to normal surrounding tissue such as the bladder and rectum. In addition, I am particularly interested in bladder-preserving strategies using  combined-modality approaches as an alternative to radical cystectomy for select patients with bladder cancer. My colleagues and I have developed a novel approach to radiation therapy for bladder cancer using IGRT in this setting.

Awards and Honors

  • Castle Connolly: New York Magazine Top Doctors (2017-2018)


Doctors at Memorial Sloan Kettering work as teams, with specialists from all different areas. This allows us to consider all your needs together, and to give you the best possible care.

Clinical Trials

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Find a Clinical Trial for You

Memorial Sloan Kettering's doctors and scientists are constantly developing new treatments for cancer. MSK is typically running hundreds of clinical trials at a given time.

You may be able to participate in a clinical trial even if you are new to MSK. Search our online directory to find trial information and see more about who can participate.

Research and Publications

Publications on PubMed

Visit PubMed for a full listing of Dr. Kollmeier’s journal articles. Pubmed is an online index of research papers and other articles from the US National Library of Medicine and the National Institutes of Health.