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Our Team

Inova Alexandria Hospital

Jane Grayson, MDJane Grayson, MD
Chief, Division of Radiation Oncology

Dr. Grayson joined the hospital in 1989, after 14 years at the National Institute of Health's National Cancer Institute (NCI), with the last five years as senior investigator and chief of the NCI-Navy Radiation Oncology Branch.

She received her medical degree from Harvard Medical School and went on to complete a pediatric internship at Johns Hopkins Hospital. Dr. Grayson completed a pediatric residency at Stanford University Hospital and continued her training in pediatric oncology and radiation oncology at NCI.

Dr. Grayson has a special interest in breast, lung and gastrointestinal cancers, and lymphoma.


Matthew Poggi, MDMatthew Poggi, MD
Medical Director

Dr. Poggi joined the hospital in 2007. He is a former commander in the United States Navy and assistant head of the Division of Radiation Oncology at Bethesda Naval Hospital.

He received his medical degree from Yale University School of Medicine. Dr. Poggi completed a surgical internship at Naval Medical Center San Diego and held the position of General Medical Officer at the Branch Medical Clinic Marine Corps. His radiation oncology residency was completed at NCI.

Dr. Poggi's clinical and research interests are the definitive management of prostate cancer, post-prostatectomy radiation, head and neck cancer, stereotactic radio surgery and stereotactic radiotherapy.


Inova Fairfax , Fair Oaks and Loudoun Hospitals

Stella Hetelekidis, MDStella Hetelekidis, MD

Dr. Hetelekidis has been a member of the Inova Fairfax Hospital medical staff since 1999 and served as the chairman of the Department of Radiation Oncology from 2005-2013.

She graduated from the Massachusetts Institute of Technology with a BS degree in both biology and literature. She received her medical degree from the University of Rochester. After a medical internship at Beth Israel Hospital in Boston she completed a residency at the Joint Center for Radiation Therapy at Harvard Medical School.

Dr. Hetelekidis areas of interest are breast cancer, gynecologic and gastrointestinal malignancies. She has lectured and published research on the treatment of breast cancer.


Gopal Bajaj, MDGopal Bajaj, MD

Dr. Bajaj joined the Inova Fairfax Hospital in 2007 and serves as the Chair of the department. He graduated from the University of Kansas with a BS degree in biology and genetics and went on to obtain a medical degree as well. Dr. Bajaj completed an internship at the Harvard Medical School's Beth Israel Deaconess Medical Center. He then completed a radiation oncology residency at Johns Hopkins Hospital.

Dr. Bajaj brings expertise in the use of TomoTherapy and image-guided radiation therapy. Other areas of interest include lung, esophageal, gastrointestinal, brain and prostate tumors. He has lectured and published research on the treatment of head and neck cancers, prostate cancer and emerging technologies in radiation oncology.


Susan Boylan, MDSusan Boylan, MD

Dr. Boylan joined Inova Fairfax Hospital in 1987. She graduated from Franklin and Marshall College with a BS in Biology. She received a medical degree from Georgetown University and completed her internship and residency in internal medicine at Wake Forest University where she also trained in radiation oncology.

Dr. Boylan's areas of interest include the treatment of breast cancer, multimodality therapy for lung cancer, gastrointestinal malignancies and palliative care.


Ashish Chawla, MDAshish K. Chawla, MD

Dr. Chawla joined Inova from Anne Arundel Medical Center in Annapolis, Maryland. He received his BS from Pennsylvania State University, University Park and his medical degree from Thomas Jefferson University. After a medical internship at Crozer-Chester Medical Center, he completed a radiation oncology residency at Massachusetts General Hospital.

His clinical interests include stereotactic radiosurgery for brain and spine, stereotactic body radiotherapy for brain, spine and lung, image-guided radiation therapy and intensity- modulated radiation therapy, prostate brachytherapy and the treatment of thoracic, gastrointestinal, breast, and prostate cancers. Dr. Chawla has lectured and published research on radiation therapy for multiple tumor sites.


Samir Kanani, MD Samir Kanani, MD

Dr. Kanani has been on the medical staff at Inova Fairfax Hospital since 2004, and he is the co-medical director of the stereotactic radiosurgery program.

He graduated from the University of Texas in Austin with a BA in psychology and biology. His medical degree was completed in Galveston, Texas and his residency was completed at the University of Maryland. His final years of training were focused on brachytherapy and radiosurgery.

Dr. Kanani's areas of interest radio surgery and IMRT as well as the treatment of cancers of the prostate, brain, lung, esophagus, head and neck, sarcoma, and gastrointestinal tract.


Glenn Tonnesen, MDGlenn Tonnesen, MD

Dr. Tonnesen has been on the medical staff Inova Fairfax Hospital since 1982, serving from 1992 to 2005 as chairman of the Department of Radiation Oncology.

He received his BS at Brown University with a degree in chemistry and his medical degree was received at the University of Utah. Dr. Tonnesen's interned at the Barnes Hospital in St. Louis. Dr. Tonnesen's residency was completed at the Harvard Joint Center for Radiation Therapy where he was chief resident and later a member of the Harvard faculty.

Dr. Tonnesen's special interest is in intensity modulated radiation therapy (IMRT), particularly TomoTherapy.


Joseph Lee, MDJoseph Lee, MD, PhD

Dr. Lee joined Inova in 2013. He completed his radiation oncology residency at the Mallinckrodt Institute of Radiology at Washington University in St Louis / Barnes-Jewish Hospital. His training included work with gynecologic, head/neck, lung, breast, and prostate cancers. Dr. Lee is experienced with a range of radiation oncology techniques including intensity-modulated radiation therapy (IMRT), stereotactic body radiation therapy (SBRT), high-dose rate (HDR) brachytherapy, and radiopharmaceuticals.

During his residency Dr. Lee also completed additional training in low-dose rate (LDR) prostate brachytherapy at the MD Anderson Cancer Center in Houston, Texas and the Seattle Prostate Institute at Swedish Medical Center. He graduated with honors from Cornell University with a Bachelor of Science in chemical engineering. He joined the Medical Scientist Training Program at the University of Minnesota, completing his medical degree and also a doctorate degree in biomedical engineering at the Center for Magnetic Resonance Research on full scholarships from the American Heart Association and NIH.

Dr. Lee is board eligible in radiation oncology.