The FMH CyberKnife Center Team

Have questions about the CyberKnife System?  The FMH CyberKnife Center Team is here with the answers you need!

Contact Donna Hill, CyberKnife Coordinator with the FMH Regional Cancer Therapy Center, either by phone at 240-566-4761 or by email at dhill@fmh.org

Janet Russo, MSW, LCSW-C and  Dr. Greg Gagnon

Team Biographies

Dr. Greg Gagnon joined the FMH CyberKnife Center staff as Medical Director in February 2010.  He spent the previous two decades at Georgetown University's Department of Radiation Medicine, serving as Associate Professor of Radiation Oncology, acting Chair of the Department of Radiation Medicine, Chief of Service and CyberKnife Director. As one of the pioneers in CyberKnife radiosurgery, Dr. Gagnon has extensive experience with the technology and has treated thousands of patients.  His expertise in treating prostate, breast, lung and pancreatic cancers, as well as the work he has done in pediatric and central nervous system cancers has led to several publications and the co-authorship of two books about radiosurgery.  He has been asked to lecture around the world, chiefly about CyberKnife radiosurgery, but also about other varied radiation oncology topics.

Dr. Paul Chomiak is a native of the Midwest.  He received his surgical training at Loyola University Medical Center in Chicago.  He completed a fellowship in Thoracic surgery and Thoracic transplant at the University of Wisconsin-Madison.  He is a diplomat of the American Board of Thoracic Surgeons as well as a fellow of the Society of Thoracic Surgeons. Dr. Chomiak is the founding member for the Center for Chest Disease, a practice limited to Thoracic surgery providing services to Central Maryland and its neighboring states.  In 2004, he began his thoracic CyberKnife practice and is currently only one of a few thoracic surgeons in the country providing thoracic CyberKnife therapy. In 2008 he founded and medically directed the FMH CyberKnife Center. He has personally treated over 350 patients with CyberKnife therapy. Dr. Chomiak is a member of the Board of Directors of the Radiosurgery Society.  He has previously served as a Board member of the CyberKnife Society.  He actively speaks and teaches on Thoracic SBRT/SRS therapy.

Dr. David Djajaputra received his Ph.D. in physics from the University of Virginia and underwent postdoctoral medical physics trainings at Medical College of Virginia and the Johns Hopkins University. Prior to joining FMH, he was a clinical assistant professor at Stanford University Medical Center, the birthplace of the CyberKnife, where he specialized in CyberKnife radiosurgery.

Wayne E. Flowers is a graduate of University of Maryland, Baltimore with a Bachelor's Degree in Information Sciences. He has over 15 years experience working in a Fortune 500 company. After two family members were diagnosed with cancer, Wayne decided to enter the Radiation Oncology field. He received his clinical training at Siani and Good Samaritan of Baltimore, MD. He is a board certified Radiation Therapy Technician in good standing.

Dr. K. C. Lee is a Diplomate of the American College of Radiology, and is a Clinical Associate Professor at Georgetown University School of Medicine.  He is a graduate of Syracuse University and Harvard University.  Dr. Lee attended medical school at the University of California in San Francisco.  He has published in numerous professional journals. Dr. Lee is a Board Certified Radiation Oncologist who leads a team of Registered Radiation Therapists, a Ph.D. Medical Physicist, a Medical Dosimetrist, Registered Nurses, Administrative Staff and Social Workers.  All of the health care professionals in the Radiation Oncology Center are Board Certified and licensed in their area of expertise.

Carol Mastalerz is a results-oriented health care professional with more than 20 years of clinical and management experience in cancer care.  She earned her nursing degrees from West Virginia University and Wayne State University and also possesses a Graduate Certificate in the Business of Medicine from Johns Hopkins University.  Carol has been with Frederick Regional Health System since 2002 as Director of Oncology Services.

Dr. Swami Nathan is a board certified neurosurgeon practicing at Frederick Memorial Hospital for the past twenty-seven years.  He has extensive experience treating brain tumors and spinal cord tumors.  After graduating from medical school in India, he underwent surgical training at Washing Hospital Center, Washington D. C. and neurosurgery training at George Washington University, Washington D. C.  He is a diplomat of American Board of Neurological Surgery and Fellow of American College of Surgeons.

Janet Russo is a graduate of Elizabethtown College and University of Maryland, School of Social Work.  She possesses Master's Degrees in Clinical Social Work and Health Studies, and is a Licensed Certified Social Worker – Clinical (LCSW-C) in the state of Maryland. Janet has worked extensively with Frederick Memorial Hospital's oncology service line since her employment in 2004. She is a Certified Oncology Social Worker (OSW-C) and is a member of the National Association of Social Workers, Association of Oncology Social Work, and the CyberKnife Society.

Dr. Dustin Simonson is a graduate of South Dakota and Idaho State University.  He obtained his Ph.D. in Radiation Health Sciences from Johns Hopkins University.  Dustin has been the lead medical physicist at the FMH Regional Cancer Therapy Center since his employment in 2002.  Dustin is published in numerous professional journals and is member of the American Association of Physicists in Medicine.

Dr. Ravi Yalamanchili is a board-certified neurosurgeon. Upon completing his B.S. degree in electrical engineering, he finished medical school and underwent an internship and residency in Neurological Surgery at the University of Kansas. He is chief of Neurosurgery at Frederick Memorial Hospital and has served as vice-chief and as chief of the Department of Surgery. Dr. Yalamanchili has served on several boards of local community charities and agencies including the Red Cross. He served in the U.S. Naval Reserve as a lieutenant commander. He is a member of the American Association of Neurological Surgeons, Congress of Neurological Surgeons, and the CyberKnife Society.