Meet the Radiation Medicine Team

Radiation Oncology Physicians

Radiation oncologists are physicians who are responsible for the medically appropriate and technically correct radiation treatment of patients with cancer. All of our radiation oncologists are board-certified in therapeutic radiology by the American Board of Radiology, licensed by the New York State Department of Health, and comply with the American College of Radiology standards of care.

Michael Kuettel, MD, PhD, MBA
Professor and Chair
Department of Radiation Medicine
Varun Chowdhry, MD
Medical Director
Southtowns Radiation Oncology
Orchard Park, NY
Assistant Professor of Oncology
Department of Radiation Medicine
Assistant Professor of Oncology
Department of Radiation Medicine 
Gregory Hare, MD
Medical Director
Milliman Radiation Medical Center
Olean General Hospital, Olean, NY
Nadia Malik, MD
Assistant Professor of Oncology
Department of Radiation Medicine
David Mattson Jr, MD
Associate Professor of Oncology
Department of Radiation Medicine
John Powell, MD
Medical Director, Radiation Medicine
Cayuga Medical Center, Ithaca, NY
Dheerendra Prasad, MD, MCh, FACRO
Professor of Oncology and Medical Director
Department of Radiation Medicine
Anurag Singh, MD
Professor of Oncology and Director of Radiation Research
Department of Radiation Medicine
Maya Mathew, MD
Medical Director
Dorothy G. Griffin Radiation Oncology Center
Oneida Health Center, Oneida, NY

The Medical Physics Team

Our board-certified medical physicists are an important part of our multidisciplinary Radiation Medicine team, designing and maintaining the quality assurance of every individual treatment plan. They ensure that information has been correctly transferred to the machine, that the plan agrees with the physician’s prescription, and that all information is consistent, understandable and well-documented. They also contribute to the development of therapeutic techniques and collaborate with team members to design treatment plans.

Matthew Podgorsak, PhD, FAAPM
Chief Medical Physicist
Department of Radiation Medicine
Steven de Boer, MSc, FAAPM
Medical Physicist
Department of Radiation Medicine
Mohammed Jermoumi, PhD
Medical Physicist
Department of Radiation Medicine
Anh Le, PhD
Medical Physicist
Department of Radiation Medicine
Harish Malhotra, PhD, DABR
Medical Physicist
Department of Radiation Medicine
Daryl Nazareth, PhD, DABR
Medical Physicist
Department of Radiation Medicine
Sanjay Raina, PhD, MSc
Medical Physicist
Department of Radiation Medicine
Cayuga Medical Center, Ithaca, NY
Dr. Iris Zhou Wang
Medical Physicist
Department of Radiation Medicine

The Medical Dosimetry Team

Medical dosimetrists are professionals who design radiation treatment plans specific to each cancer patient’s prescription as determined by the radiation oncologist. This is done with state-of-the-art 3-dimensional graphics and patient imaging collaboration with other radiation oncology professionals.

Lee Hales, CMD, Chief Medical Dosimetrist
Morgan Ennis, CMD
Jeremy Garvin, CMD
Michael Griffin, CMD
Rachel Hackett, CMD, RTT – Southtowns Radiation Oncology, Orchard Park, NY
Carin R. Jordan, CMD, RTT
Virginia G. Lazarov, CMD, RTT
Eduardo Leon, MD
Lisa Ogle, CMD – Olean General Hospital, Olean, NY
Vanessa Rundle, CMD – Oneida Health Center, Oneida, NY
Jacqueline S. Zielan, CMD, RTT

Physician Assistants

Leayn T. Flaherty
Jamie Fraas
Kathleen B. McLaughlin
Adam R. Oberkircher
Maria Schiller
Kelsey Smith
Valerie A. Stilb
Brian P. Sullivan

Radiation Therapy Team

Radiation therapists plan and deliver the prescribed course of radiation therapy. Roswell Park has 15 full-time board-certified radiation therapists.

Jeanette Hardwick, RTT, BS, MBA, Supervising Radiation Therapist
Larry Alford, RTT
Gina Bellreng, RTT
Jennifer L. Buil, RTT
Patricia M. Chapin, RTT
Maria Durlak, RTT
Hannah Eklund, RTT
Nathan Groff, RTT
Tracy M. Hails, RTT
Julianne Hanes, RTT
Alexander Hollander, RTT
Jacquelyn Jackson, RTT
Teresa L. Kishel, RTT
Jamie Luby, RTT
Deborah L. Maving, RTT
Bohdan Nazarevych, RTT
Joseph Pagano, RTT
Elizabeth, Saez, RTT
Angela Szczygiel, RTT
Amy L. Thompson, RTT

Radiation Medicine Nurses

Brian Desmaris, RN
Rebecca Higgins, RN
Michele L. Holtz, RN
Mary Elizabeth Jurca, RN
Tabatha McCabe, LPN
Caitlin Morgante, RN