Dr. Gregory Sibley, MD

Dr. Gregory Sibley, MD

Radiation Oncology  ·  
Male  ·  
Age 53
Dr. Gregory Sibley, MD is a radiation oncology specialist in Fairfax, VA and has been practicing for 23 years. He graduated from University Of Michigan Medical School in 1990 and specializes in radiation oncology.Read his story

10301 Democracy Ln

Fairfax, VA 22030

Contact Information

(703) 934-4450

Insurance Accepted

  • Aetna
  • Anthem Blue Cross Blue Shield
  • Blue Cross Blue Shield
  • Cigna
  • Coventry Health Care
  • First Health (Coventry Health Care)
  • Humana
  • MultiPlan

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Learn about Dr. Sibley

Be confident in your decisions by checking out your provider's top areas of care, education, patient reviews and more. Learn about finding the right doctor for you.

Top Care Areas

See how frequently Dr. Sibley performs your care needs compared to other doctors.

more than 86% of peers
Bladder Cancer
more than 5% of peers
Brain Cancer
more than 5% of peers

Dr. Sibley's percentages are based on the rate of treatment compared to peers nationwide from insurance data. Learn more info about our data and this Top Care Areas component.

Dr. Sibley's bio

This content was provided by Dr. Sibley "Dr. Gregory S. Sibley joins Virginia Cancer Specialists after serving as Radiation Oncologist and chair of the Cancer Committee at Sibley Memorial Hospital in Washington, D.C. for 14 years. 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. Highly active in the medical community, Dr. Sibley is a member of multiple associations, including the American Society of Clinical Oncology and the American Society of Therapeutic Radiation Oncology. 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 prostate cancer, having performed over 600 brachytherapy procedures, as well as breast, head and neck, lung, and gastrointestinal cancers. In his spare time, Dr. Sibley is an avid hockey player and triathlete."


Read Less

1  Specialties

  • Radiation Oncology

1  Board Certifications

  • Radiation Oncology
    Accredited by: American Board of Radiology*

3  Procedures

  • High-Dose Rate (HDR) Brachytherapy
  • Image-Guided Radiation Therapy (IGRT)
  • Intensity-Modulated Radiation Therapy (IMRT)

Background Check

0 Malpractice Claims

No malpractice history found for Virginia.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.


  • University Of Michigan
    Undergraduate School | Graduated 1989
  • University Of Michigan Medical School
    Medical School | Graduated 1990
  • St. Joseph Mercy Hospital
    Internship Hospital | Completed 1991
  • Univ Of Chicago
    Residency Hospital | Completed 1995
  • University Of Chicago Medicine
    Fellowship Hospital | Completed 1995

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. Sibley has no media or publications listed.

Languages Spoken

  • English

Memberships & Professional Affiliations

Dr. Sibley does not have any memberships or affiliations listed. If you are Dr. Sibley and would like to add memberships or affiliations, please update your profile.

Dr. Sibley's Reviews

Likelihood of recommending Dr. Sibley to family and friends
8 total reviews (3 have comments)

Likelihood to Recommend (8)

  • 5
  • 4
  • 3
  • 2
  • 1

Dr. Sibley's Performance

  • Trustworthiness

  • Explains condition(s) well

  • Answers questions

  • Time well spent


Office & Staff Performance

  • Scheduling

  • Office environment

  • Staff friendliness

  • Average wait time

    Under 10 minutes

Patient Comments (3)

Dr Sibley is a very kind and compassionate guy. He and his staff work as a team and they are a great team. When I first met Dr Sibley he explained everything very clear and allowed any questions I had and answered them. I highly recommend Dr Sibley and his team.
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He is compassionate; and excellent with his skill. He is also nicce and approachable. I would recommend him and Dr. Daniel Laurent highly to my colleagues or friends who may need their expertise.
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Very easy to understand his explanations about conditions. Takes time to answer questions. Very professional.
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