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Oncology Specialist (cancer), Radiation Oncology, Radiologist
22 years of experience
Accepting new patients
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Learn more about Dr. Gregory Sibley:

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  1. Qualifications
  2. What's important to you

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Patient Reviews

Patient comments (4)

The overall average patient rating of Dr. Gregory Sibley is Excellent. Dr. Sibley has been reviewed by 10 patients who have provided 4 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Ease of Appointment 5.0
Promptness 5.0
Courteous Staff 5.0
Accurate Diagnosis 5.0
Bedside Manner 5.0
Spends Time with Me 5.0
Follows Up After Visit 5.0

Specialties & Research

Dr. Gregory Sibley, MD is board certified in Radiation Oncology.

  • He has special expertise in 9 areas:
  • Breast Cancer
  • Cancer
  • Clinical Research
  • Epidemiology
  • Head and Neck Cancer
  • Lung Cancer
  • Lung Cancer (Non-Small-Cell Lung Carcinoma)
  • Metastatic Breast Cancer
  • Radiation Injuries

Education & Awards

Dr. Sibley graduated from University of Michigan Medical School, Ann Arbor. He has 4 awards.

One of America's Leading Experts on:
Lung Cancer (Lung Neoplasm)
Castle Connolly's Top Doctors™ (2013)
Patients' Choice Award (2008 - 2011, 2013)
Compassionate Doctor Recognition (2010, 2013)


Dr. Sibley has 1 hospital affiliations:

  • Sibley Memorial Hospital 

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Additional Information
Dr. Gregory S Sibley MD is a male Radiation Oncologist, has 22 years of experience and practices in Radiation Oncology.
Where does Dr. Gregory S. Sibley practice?
Dr. Gregory Sibley has 1 office location.
Dr. Gregory Sibley practices Radiation Oncology near Fairfax, VA.
See Fairfax Oncologists.