Exciting News! Our Gainesville Office has moved to Bristow – 9450 Innovation Drive, Manassas, VA 20110. Same great providers and care team, same exceptional care, new, larger space to better serve our patients.
Gregory S. Sibley, MD
Position
Radiation Oncologist
Board Certification
American Board of Radiology
Accepting new patients
4.82 out of 5
22 Reviews
“I place a high premium on customer service, and that starts with me. I insist that patients are seen on time, and that wait times for consultations and treatment start times are as short as possible. We are dealing with cancer, after all. At VCS we have the best of both worlds (private practice with close personal attention and also academic with cutting edge research and treatment options).”
Gregory S. Sibley, MDBio
Dr. Gregory S. Sibley joined Virginia Cancer Specialists after 14 years in Radiation Oncology at Sibley Memorial Hospital in Washington, D.C. Throughout his career, Dr. Sibley has focused on providing the highest quality care in the field of radiation oncology. He has positioned himself as an expert in the multi-disciplinary treatment of cancer and in state-of-the-art radiation treatment planning techniques. Within the US Oncology Network, Dr. Sibley is a member of the Executive Committee for Radiation Oncology and Vice-Chair for the Technology Committee. Dr. Sibley has authored over 20 peer-reviewed publications, many while on faculty at Duke University Medical Center. Although well-versed in the treatment of multiple cancers, Dr. Sibley has special interest in breast cancer, brachytherapy for prostate cancer, and intensity-modulated radiotherapy for head and neck, and lung cancers.
In his spare time, Dr. Sibley is an avid hockey player and triathlete.
Credentials
Fellowship
University of Chicago
Internship
St. Joseph Mercy Hospital
Medical School
University of Michigan
Residency
University of Chicago
Special Interest
Breast cancer, prostate cancer, lung cancer, Radiation Oncology
Languages
English
Awards
Virginia Top Doctor
February 14, 2025
Northern Virginia Magazine Top Doctor
February 1, 2025
Castle Connolly #1 Physician Practice
January 1, 2025
Washingtonian Top Doctor
November 1, 2024
Arlington Magazine Awards Top Doctor
July 1, 2024
Northern Virginia Magazine Top Doctor
February 1, 2024
Castle Connolly #1 Physician Practice
January 1, 2024
Washingtonian Magazine Top Doctor
November 1, 2023
Northern Virginia Magazine Top Doctor
February 1, 2023
Northern Virginia Magazine Top Doctor
February 1, 2020
Washingtonian Magazine Top Doctor
November 1, 2019
Northern Virginia Magazine Top Doctor
February 1, 2019
Washingtonian Magazine Top Doctor
November 1, 2018
Northern Virginia Magazine Top Doctor
February 1, 2018
Virginia Living Magazine Top Doctors
January 1, 2018
Physician Publications
Bronchial stenosis: an underreported complication of high-dose external beam radiotherapy for lung cancer?
January 1, 2005
Read MoreRoutine use of approximately 60 Gy once-daily thoracic irradiation for patients with limited-stage small-cell lung cancer
June 1, 2003
Read MoreMore Publications by Gregory S. Sibley, MD
February 1, 2001
73.6 Gy and Beyond: hyperfractionated, accelerated radiotherapy for non-small cell lung cancer
Read MoreJanuary 15, 2001
Can we predict radiation-induced changes in pulmonary function based on the sum of predicted regional dysfunction?
Read MoreJanuary 1, 2001
Carboplatin/Paclitaxel or carboplatin/vinorelbine followed by accelerated hyperfractionated conformal radiotherapy: a preliminary report of a phase I dose escalation trial from the Carolina Conformal Therapy Consortium
Read MoreNovember 20, 2000
The role of lung perfusion imaging in predicting the direction of radiation-induced changes in pulmonary function tests
Read MoreAugust 1, 2000
A new three-dimensional dose distribution reduction scheme for tubular organs
Read MoreSeptember 1, 2000
Can angiotensin-converting enzyme inhibitors protect against symptomatic radiation pneumonitis?
Read MoreDecember 1, 1999
The rationale and use of three-dimensional radiation treatment planning for lung cancer
Read MoreSeptember 1, 1999
A neural network to predict symptomatic lung injury
Read MoreSeptember 1, 1999
The effect of patient-specific factors on radiation-induced regional lung injury
Read MoreAugust 1, 1999
Clinical and dosimetric predictors of radiation-induced esophageal toxicity
Read MoreFebruary 1, 1999
Multimodality nuclear medicine imaging in three-dimensional radiation treatment planning for lung cancer: challenges and prospects
Read MoreFebruary 1, 1998
Radiotherapy for patients with medically inoperable stage I non-small cell lung cancer: smaller volumes and higher doses
Read MoreFebruary 1, 1998
Enhancement of replication of genetically engineered herpes simplex viruses by ionizing radiation: a new paradigm for destruction of therapeutically intractable tumors
Read MoreJanuary 1, 1998
Radiotherapy alone for medically inoperable stage I non-small cell lung cancer: the Duke Experience
Read MoreMay 1, 1997
Tumor hypoxia adversely affects the prognosis of carcinoma of the head and neck
Read MoreDecember 1, 1995
The Treatment of Stage III Non-Small Cell Lung Cancer Using High-Dose Conformal Radiotherapy
Read MoreSeptember 30, 1995
Patterns of failure following high-dose chemotherapy and autologous bone marrow transplantation with involved field radiotherapy for relapsed/refractory hodgkin’s disease
Read MoreJuly 15, 1995
Conservative surgery and adjuvant radiation therapy in the management of adult soft tissue sarcoma in the extremities: clinical and radiobiological results
Read MoreJuly 15, 1995
The patterns of failure following total body irradiation and bone marrow transplantation +/- local radiotherapy boost for advanced neuroblastoma
Read MoreJanuary 1, 1994
Patterns of failure of complete responders following high-dose chemotherapy and autologous bone marrow transplantation for metastatic breast cancer: implications for the use of adjuvant radiation therapy
Read MoreJanuary 1, 1993
A Comparison of CT-based treatment planning and retrograde urethrography in determining the prostatic apex at simulation
Read MoreWhat Patients Say
Location
ALL LOCATIONS
RADIATION ONCOLOGY CENTER
Hours of Operation
Monday through Friday
7:30 a.m. to 5:00 p.m.
Phone:
(571) 350-8400
Address:
8613 Route 29
Fairfax, VA 22031
