Keith R. Unger, MD| Radiation Oncology | MedStar Health
Keith R. Unger

Keith R. Unger, MD
Provider is directly employed by MedStar Health

4.9 out of 5 (336 reviews)

Specialties: Radiation Oncology

Languages: English


About me

Board-certified radiation oncologist Keith Unger, MD, is the Physician Executive Director of MedStar Health's Radiation Oncology Service Line, Chief of Radiation Oncology at MedStar Georgetown University Hospital, and the Medical Director of RadAmerica. He is the Acting Academic Chair of the Department of Radiation Medicine and a Professor at Georgetown University School of Medicine. He serves on the Medical Executive Committee of MedStar Georgetown University Hospital. 

Dr. Unger's clinical practice focuses on the treatment of complex gastrointestinal cancers, sarcomas, prostate cancer, as well as advanced radiation therapy techniques.

Dr. Unger completed his internship at MedStar Washington Hospital Center and residency at MedStar Georgetown University Hospital, including a year as chief resident for Radiation Oncology. He received both his undergraduate and medical degree from the University of Virginia, where he was the recipient of numerous academic honors and awards.

As a researcher and educator, Dr. Unger has been a co-author to multiple text book chapters and publications in peer-reviewed journals, as well as a presenter at major medical meetings. His research focuses on the development of novel radiation therapy techniques and reduction in treatment-related side effects. He is an investigator for several active clinical and basic science research studies and his work has been supported by grant funding. He previously served as chair of the gastrointestinal committee for the annual meeting of the American Society of Clinical Oncology and serves a member of a physician advisory board for proton therapy.

Dr. Unger sees patients at both MedStar Georgetown University Hospital and MedStar Southern Maryland Hospital Center.

Conditions Treated:

  • Pancreatic cancer
  • Liver cancer
  • Esophageal cancer
  • Colorectal cancer
  • Other gastrointestinal cancers
  • Sarcomas
  • Brain and spine cancer
  • Breast cancer
  • Prostate cancer
  • General radiation oncology

Procedures performed:

  • Proton therapy
  • Intensity modulation radiation therapy (IMRT)
  • Stereotactic body radiation therapy, CyberKnife
  • Stereotactic radiosurgery, CyberKnife
  • Selective internal radiation therapy (TheraSpheres, Sirs Spherers)
  • Intraoperative radiation therapy (INTRABEAM)

Clinical areas of focus

  • Adenocarcinoma Of The Head And Neck
  • Brain And Spine Tumors
  • Breast Cancer
  • Colorectal Malignancy
  • Cyberknife
  • Genitourinary Cancers
  • Intensity Modulated Radiation Therapy
  • Liver Cancer
  • Lung Cancer
  • Lymphoma
  • Pancreas Cancer
  • Prostate Cancer
  • Proton Beam Therapy
  • Stereotactic Body Radiation Therapy
  • Total Body Irradiation
Show More

Conditions and procedures

Conditions I treat

  • Acoustic Neuroma
  • Adenocarcinoma Of The Head And Neck
  • Anal Cancer
  • Appendiceal Cancer
  • Arteriovenous Malformation (AVM)
  • Astrocytoma Tumors
  • Benign Neoplasm Bone
  • Bile Duct Mass
  • Bone Sarcoma
  • Brain And Spine Tumors
  • Breast Cancer
  • Carcinoma In Situ Of Breast
  • Cholangiocarcinoma
  • Colorectal Malignancy
  • Ductal Carcinoma In Situ (DCIS)
  • Epithelioid Hemangioendothelioma
  • Esophageal Cancer
  • Eye Cancer
  • Gallbladder Cancer
  • Gastrointestinal (GI) Cancer
  • Genitourinary Cancers
  • Glioblastoma Multiforme
  • Glioma
  • Keloid
  • Laryngeal Cancer
  • Liver Cancer
  • Lobular Carcinoma In Situ (LCIS)
  • Lung Cancer
  • Lymphoma
  • Malignant Brain Neoplasm
  • Malignant Carcinoid Tumor Of Colon
  • Malignant Neoplasm Of Ureter
  • Meningioma
  • Multiple Myeloma
  • Myxopapillary Ependymoma
  • Nasopharyngeal Cancer
  • Oligodendroglioma
  • Orbital Tumors
  • Oropharyngeal Cancer
  • Pancreas Cancer
  • Paranasal Sinus And Nasal Cavity Cancer
  • Pituitary Adenoma
  • Prostate Cancer
  • Radiation Necrosis
  • Radiation Toxicity
  • Rectal Cancer
  • Sarcoma
  • Skull Base Tumor
  • Small Bowel Cancer
  • Small Intestine Cancer
  • Spine Tumor
  • Stomach Cancer
  • Thymoma
  • Thyroid Cancer
  • Trigeminal Neuralgia
  • Triple Negative Breast Cancer
Show All Show Less

Procedures I perform

  • 3D Conformal Radiation Therapy
  • Balloon Breast Brachytherapy
  • Brachytherapy
  • Chemoradiation
  • Combined Modality Therapy
  • Cyberknife
  • External Beam Radiation Therapy
  • High Dose Rate Brachytherapy
  • Image Guided Radiation Therapy
  • Intensity Modulated Radiation Therapy
  • Intraoperative Radiation Therapy
  • Low Dose Rate Brachytherapy
  • Mammosite
  • Neoadjuvant Chemotherapy
  • Pencil Beam Proton Therapy
  • Proton Beam Therapy
  • Radiation Treatment For Head And Neck Cancer
  • Radioembolization
  • Stereotactic Body Radiation Therapy
  • Stereotactic Radiosurgery
  • Stereotactic Spine Radiosurgery
  • Three Dimensional Conformal Radiation Therapy
  • Tomotherapy
  • Total Body Irradiation
  • Unsealed Source Radiotherapy
  • Volumetric Modulated Arc Therapy
Show All button Press enter to expand Show Less

Practice locations

Distance from Change LocationEnter your Location

3800 Reservoir Road Northwest
Bles Bldg
Washington, DC, 20007


Fax 202-444-9323

Get Directions

miles away

Fax 202-444-9323

7501 Surratts Road
Suite 108
Clinton, MD, 20735


Fax 301-868-7412

Get Directions

miles away

Fax 301-868-7412


MedStar Health accepts most major health insurance plans. If you are uncertain as to whether your individual health insurance plan is accepted at MedStar Health, please call your insurance company.

  • List of insurance plans we accept
    • United Choice Plus
    • Aetna Elect Choice/ Open Access (POS)
    • Innovation Health: Open POS II
    • Innovation Health: Network Only Plus
    • United Golden Rule
    • United Optimum Choice
    • Aetna Open Choice (PPO)
    • Aetna Managed Choice Open Access (POS)
    • Cigna Preferred Medicare
    • CareFirst Blue Card Program (Out-of-area BCBS plans)
    • Maryland Point of Service Plan (MPOS)
    • United Erickson Advantage Plans
    • United MD IPA (HMO)
    • Medicaid - Maryland
    • United Nursing Home Plan (C-SNP
    • United Core Essential (HMO)
    • Aetna Open HMO/Open HMO Option/Open EPO Plus
    • Aetna HMO-Open Access/Select OA
    • WellPoint Maryland - Maryland Health Choice
    • Kaiser Medicare Plus
    • Anthem (POS & Open Access POS) BCBS of VA HealthKeepers
    • United Navigate
    • Veterans Affairs Community Care Network (VA CCN)
    • United MD IPA Preferred (POS)
    • Innovation Health: PPO
    • Kaiser Medicare Advantage Signature and Select
    • Cigna Choice Fund PPO
    • United Medicare Advantage DSNP District of Columbia
    • Innovation Health: POS
    • Cigna HMO & Network (HMO)
    • United Optimum Choice Preferred (POS) & OCI Direct (HMO)
    • Aetna HMO
    • Kaiser Permanente Signature-Added Choice
    • Cigna True Choice Plus Medicare (PPO)
    • United Choice
    • Aetna Traditional Choice (PPO)
    • HumanaChoice Honor’s plan PPO
    • Aetna Managed Choice (POS)
    • United Options (PPO) (includes Empire PPO)
    • Anthem Plus BCBS of VA HealthKeepers Plus
    • Aetna Select HMO/HealthFund/Health Network
    • Aetna Choice POS & Choice POS II
    • Cigna HMO Open Access
    • Carefirst BlueChoice HMO
    • United Select HMO - EPO/NPP
    • Cigna POS/Network POS
    • United Select Plus (POS)
    • Aetna Signature Administrator PPO/TPA
    • Cigna POS Open Access & Open Access Plus
    • Cigna EPO
    • Cigna True Choice Medicare (PPO)
    • MedStar Family Choice DC Healthy Families
    • United GEHA (for all other states) Compass Rose
    • Anthem HMO - BCBS of VA HealthKeepers
    • Aetna Elect Choice/ EPO (Aetna Health Fund)
    • Kaiser Flexible Choice
    • Traditional Medicare Fee for Service
    • Kaiser Select
    • United Mamsi Life & Health
    • Aetna Quality Point of Service (POS)
    • HumanaChoice PPO
    • Innovation Health: HMO & EPO Plus
    • Innovation Health: POS Plus
    • Police and Fire Clinic
    • Carefirst Blue Preferred PPO
    • Health Services for Children with Special Needs (HSCSN)
    • Cigna Alliance Medicare (HMO) |
    • CareFirst MedStar Select PPO
    • United Community Plan - Maryland Health Choice Program
    • HealthyBlue PPO
    • Aetna HealthFund/Health Network Option OA
    • Beech Street PPO
    • Tricare for Life East
    • Carefirst EPO
    • Carefirst BlueChoice Opt Out Plus Open Access (POS)
    • I-SNP
    • Aetna Medicare Advantage HMO & PPO Plans
    • Cigna TotalCare (HMO D-SNP)
    • Medicaid - District of Columbia
    • Cigna Achieve Medicare (HMO C-SNP)
    • MedStar Family Choice DC Healthcare Alliance
    • Choice Care Network/HUMANA (PPO)
    • Cigna Network Open Access
    • Carefirst BlueChoice Opt Out Open Access
    • CareFirst (NCA) Indemnity
    • D-SNP)
    • Kaiser Maryland Medicaid MCO
    • CareFirst BC/BS Advantage Core/Enhanced
    • United AARP Medicare Complete
    • CareFirst Maryland Indemnity or PPO
    • Tricare East Prime
    • Federal Employee Program (Std/Basic PPO/Blue Focus)
    • United Group Medicare Advantage Plans
    • Cigna Indemnity
    • Medicaid - Virginia
    • Carefirst Healthy Blue (HMO/POS)
    • Virginia Premier
    • Kaiser Select-Added Choice
    • UnitedHealthcare Individual Exchange Plans
    • CareFirst Group Medicare Advantage prescription drug benefit (PPO)
    • Innovation Health: Open POS Plus
    • CareFirst NASCO
    • CareFirst Group Medicare Advantage
    • Aetna Student Health Insurance
    • Private Health Care Systems (PHCS) (PPO)
    • Innovation Health: Indemnity
    • WellPoint Maryland
    • Cigna PPO and PPO Plus
    • Kaiser HMO Plus and DHMO Plus Member
    • Tricare East Select
    • Kaiser Signature
    • Tricare Reserve Select
    • Carefirst BlueChoice Open Access
    • CareFirst MedStar PPO
    • United Student Resources
    • CareFirst Administrators
    • Veterans Affairs Community Care Network
    • Innovation Health: Open Network Only Plus
    • Coventry Health Care National Network PPO
    • MedStar Family Choice - Maryland Health Choice
    • First Health PPO
    • Coventry of Delaware HMO/PPO
    • Coventry Health Care of Virginia
    • Great-West Healthcare POS/CIGNA



Board Certification: American Board of Radiology, Radiation Oncology

Residency Program: MedStar Georgetown University Hospital (2011)

Residency Program: MedStar Washington Hospital Center (2007)

Medical School: University of Virginia School of Medicine (2006)


  • Association of Residents in Radiation Oncology Educator of the Year
  • Best of ASTRO Abstract Award Annual Meeting 
  • Top Doctor, Washingtonian Magazine 
  • Radiation Research Society Scholars in Training Travel Award

Ratings and reviews

  • Explanations the care provider gave you about your problem or condition

  • Extent to which the care provider listened to you

  • Care provider’s discussion of any proposed treatment (options, risks, benefits, etc.)

  • Care provider’s efforts to include you in decisions about your care

  • Concern the care provider showed for your questions or worries

  • Likelihood of recommending this care provider to others

  • Apr 29, 2024

    I have been very pleased with the services

  • Feb 29, 2024

    Dr. Unger, whether during this appt. or during my radiation treatment last summer was open, caring, and quite thorough discussing my treatment.

  • Feb 14, 2024

    Excellent discussion of tx options listened to my questions and concerns.