Dr. Marisa A. Kollmeier

Dr. Marisa A. Kollmeier, MD, is a board-certified radiation oncologist specializing in genitourinary and gynecologic malignancies. She practices at Memorial Sloan Kettering Cancer Center, where she applies advanced radiation technologies to optimize therapeutic outcomes while minimizing toxicity to normal tissue. Her clinical approach is rooted in a strong commitment to multidisciplinary care, collaborating closely with colleagues across specialties to improve outcomes for patients with these cancers.

Dr. Kollmeier's primary clinical and research interests center on the integration of brachytherapy into the management of genitourinary and gynecologic cancers. Brachytherapy enables the delivery of high doses of radiation directly to tumors while limiting exposure to surrounding structures such as the bladder and rectum. Her practice incorporates sophisticated techniques including image-guided brachytherapy, intensity-modulated radiation therapy (IMRT), and image-guided radiation therapy (IGRT) to refine treatment precision and reduce side effects for her patients.

A particular focus of her work involves bladder-preserving strategies for select patients with bladder cancer. She and her colleagues have developed a novel approach to radiation therapy for bladder cancer using IGRT as part of a combined-modality treatment, offering an alternative to radical cystectomy for appropriate candidates. This work reflects her dedication to advancing individualized, organ-preserving treatment options through the application of cutting-edge radiation technology.