Arlyn Apollo, MD, MPH

About Me

I am a board-certified medical oncologist and internist focusing on the treatment of genitourinary malignancies, including prostate, bladder, kidney, and testicular cancers. I am a member of Memorial Sloan Kettering’s Genitourinary Disease Management Team and have a clinical interest in treating gastrointestinal cancers.

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I joined the team at MSK’s regional facility in Rockville Centre, Long Island, in 2007. Here we offer compassionate and cutting-edge treatment for patients who wish to receive Memorial Sloan Kettering care closer to their homes. My goal is to provide the same state-of-the-art care that is offered at Memorial Sloan Kettering in Manhattan. To that end, I am involved in academic conferences with my colleagues in Manhattan to ensure that I am up to date on the most recent advances in the field.

I work as part of a multidisciplinary team with radiation oncologists, who are also located at our Rockville Centre site. Together we collaborate with surgeons and other specialists at our main campus or within the Long Island community, depending on the individual needs and desires of each patient. I participate in research by enrolling patients in clinical trials at our Rockville Centre site, or by facilitating their entry into additional protocols that are available only at our Manhattan campus.

Along with trying to achieve the best possible outcome for each patient, my practice focuses on maintaining or improving patients’ quality of life at all stages of disease. My colleagues and I, along with nurses, social workers, and nutrition specialists here in Rockville Centre, attend closely to the psychosocial needs of our patients, as well as their family members, while they are undergoing cancer treatment.

  • Clinical Expertise: Genitourinary Malignancies; Gastrointestinal Malignancies
  • Languages Spoken: English
  • Education: MD, Mount Sinai School of Medicine
  • Residencies: Internal Medicine - Mount Sinai School of Medicine
  • Fellowships: Oncology/Hematology - Columbia University Medical Center
  • Board Certifications: Internal Medicine; Medical Oncology


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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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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