Dr. Peter Hyung-Kyun Ahn, MD

Dr. Peter Hyung-Kyun Ahn, MD

Dr. Peter Hyung-Kyun Ahn, MD

Languages: English
Phone: 202-444-6385
Fax: 202-444-9323

Contact this Provider:

  • Radiation Oncology
Conditions I Treat
  • acoustic neuroma
  • adenocarcinoma of the head and neck
  • anal cancer
  • arteriovenous malformation (avm)
  • astrocytoma tumors
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Procedures I Perform
  • 3d conformal radiation therapy
  • balloon breast brachytherapy
  • brachytherapy
  • chemoradiation
  • combined modality therapy
  • Show All
About the Provider

Peter H. Ahn, MD, joined the medical staff of MedStar Georgetown University Hospital's Department of Radiation Medicine in 2017, after five years as a radiation oncologist and assistant professor with the University of Pennsylvania Health System. Previously, he was an assistant professor at Thomas Jefferson University and Hospital in Philadelphia.

Fellowship-trained at MD Anderson Cancer Center and board-certified in Radiation Oncology, Dr. Ahn has extensive experience in treating cancers of the head and neck, skin (including melanoma), skull base, and brain using a variety of therapeutic approaches, including conventional and proton beam radiation therapies. He is nationally recognized by Castle Connolly's annual publication, "America's Top Doctors." 

Dr. Ahn's research has been funded by industry, private and public sources including NIH, and been published in peer-reviewed journals. A frequent guest lecturer and presenter, he is also a reviewer for multiple scientific and medical publications.

Philosophy of Care
"No two cancer patients are exactly alike, so the need and ability to highly customize radiation treatment requires disease-specific training and extensive experience. Minimizing the long-term side-effects of today's advanced treatments is also a major consideration. Dealing with the unique challenges inherent in each patient's social situation, individual goals of care, and tumor characteristics keeps me excited about my work as a member of the dedicated and experienced team of physicians, nurses, technicians and physicists at MedStar Georgetown."

Conditions Treated:

  • Head & Neck (including but not limited to oropharynx, nasopharynx, larynx, paranasal sinus)
  • Skull base (including but not limited to paragangliomas)
  • Brain (including but not limited to gliomas, meningiomas, pituitary tumors)
  • Skin (squamous cell, basal cell, melanoma, Merkel cell)
  • Spine
Procedures performed:
  • Proton therapy
  • Stereotactic Body Radiosurgery (Cyberknife)
  • Intensity Modulated Radiation Therapy
  • Volumetric Modulated Arc Therapy (RapidArc)
  • Electron Beam Radiotherapy
Clinical Expertise:
  • Treatment with conventional, stereotactic (CyberKnife) and proton therapy for:
  • Head and Neck cancer
    • Oropharynx (including tonsil, base of tongue, soft palate)
    • Larynx
    • Nasopharynx
    • Paranasal sinus
  • Base of skull cancer/conditions
    • Paragangliomas
    • Acoustic neuromas
  • Brain
    • Gliomas
    • Meningioma
    • Pituitary tumors
  • Skin, including melanoma
  • Spine and Brain metastases

  • Fellowship Program: University of Texas MD Anderson Cancer Center (2009)
  • Residency Program: Montefiore Medical Center (2008)
  • Internship Program: Hurley Medical Center (2004)
  • Medical School: Albert Einstein College of Medicine (2003)

Khalili S, Worrall DM, Brooks S, Morris SM, Farquhar D, Newman JG, Learned KO, Ahn PH, Craig J, Kennedy DW, O'Malley BW, Palmer JN, Adappa ND. Endoscopy versus imaging: Analysis of surveillance methods in sinonasal malignancy. Head and Neck. 2016.

Ahn PH, Machtay M, Anne PR, Cognetti D, Keane WM, Wuthrick E, Dicker AP, Axelrod RS. Phase I trial using induction ciplatin, docetaxel, 5-FU and erlotinib followed by cisplatin, bevacizumab and erlotinib with concurrent radiotherapy for advanced head and neck cancer. American Journal of Clinical Oncology. 2016

Anamalayil SJ, Teo BKK, Lin A, Lustig RA, Ahn PH. Full-Neck Volumetric Modulated Arc Therapy versus Split-Field Intensity Modulated Radiation Therapy on Low Neck Structures. British Journal of Radiology, 2016.

Ahn PH, Quon H, Mick R, O'Malley BW, Weinstein GS, Chalian A, Malloy K, Sollecito T,Greenberg M, McNulty S, Lin A, Zhu T, Finlay J, Cengel K, Livolsi V, Feldman M, Busch TM. Toxicities and Early Outcomes in Phase 1 Trial of Photodynamic Therapy for Premalignant and Early Stage Head and Neck Tumors. Oral Oncology. 2016

Wang P, Yin L, Song G, Ahn PH, Lin A, Gee J, Dolney D, Solberg TD, Maughan R, McDonough J, Teo BK. Quantitative Assessment of Anatomical Change Using a Virtual Proton Depth Radiograph (PDR). Journal of Applied Clinical Medical Physics. 2016

 Ahn PH, Mitra N, Alonso-Basanta M, Adappa ND, Palmer JN, O'Malley Jr. BW, Rassekh CH,Chalian A, Cohen RB. Nodal Metastasis and Elective Nodal Level Treatment in Sinonasal Small Cell and Sinonasal Undifferentiated Carcinoma: A Surveillance, Epidemiology and End Results Analysis. British Journal of Radiology. 2016

Awards and Recognitions

  • Castle Connolly, America's Top Doctors
  • American College of Nuclear Physicians

    MedStar Health Providers participate with a wide range of health insurance products. We accept self-pay patients and the insurances plans listed below. This list is not comprehensive, it is updated periodically and is subject to change. If you do not see your health insurance plan or product listed, or if you have any questions regarding MedStar Health’s participation with your health plan, please contact your health plan to verify participation with our providers.

    Since the MedStar Health providers span the District of Columbia, Maryland and Virginia regions, our participation with DC, Maryland and Virginia Medical Assistance programs varies by provider group. Please contact your MedStar Physician’s Office to assist with verifying Medical Assistance participation. If you are enrolled in a Medicaid Managed Care Organization, please contact your Medicaid health plan to verify participation.

Practice Locations
  • 7501 Surratts Road
    Suite 108
    Clinton, MD 20735
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    Phone: 301-877-5610
    Fax: 301-868-7412

  • 3800 Reservoir Road Northwest
    Bles Bldg Lower Level
    Washington, DC 20007
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    Phone: 202-444-3320
    Fax: 202-444-9323

Member of Medical Staff
  • MedStar Southern Maryland Hospital Center
  • MedStar Georgetown University Hospital
  • Castle Connolly, America's Top Doctors
  • American College of Nuclear Physicians