Peter Hyung-Kyun Ahn, MD
Provider is directly employed by MedStar Health

4.8 out of 5 (89 reviews)

Specialities: Radiation Oncology

Languages: English

202-444-9323

About me

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

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
  • Kidney Cancer
  • Liver Cancer
  • Lung Cancer
  • Lymphoma
  • Pancreas Cancer
  • Prostate Cancer
  • Proton Beam Therapy
  • Stereotactic Body Radiation Therapy
  • Total Body Irradiation
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Conditions and procedures

Conditions I treat

  • Acoustic Neuroma
  • Adenocarcinoma Of The Head And Neck
  • Anal Cancer
  • Arteriovenous Malformation Avm
  • Astrocytoma Tumors
  • Bladder Cancer
  • Brain And Spine Tumors
  • Breast Cancer
  • Carcinoma In Situ Of Breast
  • Cervical And Endometrial Cancers
  • Cholangiocarcinoma
  • Colorectal Malignancy
  • Ductal Carcinoma In Situ Dcis
  • Epithelioid Hemangioendothelioma
  • Esophageal Cancer
  • Eye Cancer
  • Genitourinary Cancers
  • Glioblastoma Multiforme
  • Glioma
  • Keloid
  • Kidney Cancer
  • Laryngeal Cancer
  • Liver Cancer
  • Lobular Carcinoma In Situ Lcis
  • Lung Cancer
  • Lymphoma
  • Malignant Carcinoid Tumor Of Colon
  • Malignant Neoplasm Of Ureter
  • Melanoma
  • Meningioma
  • Mouth Cancer
  • Multiple Myeloma
  • Myxopapillary Ependymoma
  • Nasopharyngeal Cancer
  • Oligodendroglioma
  • Orbital Tumors
  • Oropharyngeal Cancer
  • Ovarian Cancer
  • Pancreas Cancer
  • Paranasal Sinus And Nasal Cavity Cancer
  • Pituitary Adenoma
  • Prostate Cancer
  • Radiation Necrosis
  • Radiation Toxicity
  • Rectal Cancer
  • Sarcoma
  • Skin Cancer
  • Small Bowel Cancer
  • Stomach Cancer
  • Testicular Cancer
  • Thymoma
  • Thyroid Cancer
  • Trigeminal Neuropathy
  • Triple Negative Breast Cancer
  • Vulvar Cancer
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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
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Practice locations

Distance from Change LocationEnter your Location

7501 Surratts Road
Clinton, MD, 20735

301-877-5610

Fax 301-868-7412

Get Directions

miles away

Fax 301-868-7412

3800 Reservoir Road Northwest
Bles Bldg Lower Level
Washington, DC, 20007

202-444-3320

Fax 202-444-9323

Get Directions

miles away

Fax 202-444-9323

Insurance

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

  • List of insurance plans we accept
    • Aetna Elect Choice/ EPO (Aetna Health Fund) Innovation Health: Network Only Plus
    • Aetna Quality Point of Service (POS)
    • Aetna USAccess (POS)
    • Aetna Student Health Insurance
    • Aetna Medicare Advantage HMO & PPO Plans
    • CFBCBS BlueChoice HMO
    • CFBCBS Blue Choice Opt Out Plus Open Access (POS)
    • CFBCBS Maryland Point of Service Plan (MPOS)
    • CFBCBS Federal Employee Program (Std. & Basic PPO)
    • CFBCBS Maryland Indemnity or PPO
    • CFBCBS (NCA) Indemnity
    • CIGNA HMO & Network (HMO)
    • CIGNA POS/Network POS
    • Great-West Healthcare POS/CIGNA
    • CIGNA Indemnity
    • Coventry Health Care of Virginia
    • Coventry of Delaware HMO/PPO
    • First Health PPO
    • FIRST HEALTH
    • Tricare Prime
    • Tricare Standard
    • Tricare Extra (Indemnity)
    • Tricare for Life (Medicare Supplemental Plan)
    • MedStar Family Choice - Maryland Health Choice
    • MedStar Select (MedStar Associates' Plan)
    • MedStar Medicare Choice
    • United Healthcare Select HMO - EPO/NPP
    • United Healthcare Select Plus (POS)
    • United Healthcare Choice Plus
    • United Student Resources
    • M.D. IPA (HMO)
    • M.D. IPA Preferred (POS)
    • Optimum Choice Preferred (POS) & OCI Direct (HMO)
    • Mamsi Life & Health (Indem./PPO)
    • Aetna Worker's Compensation Network
    • Coventry Health Care National Network PPO
    • Private Health Care Systems (PHCS) (PPO)
    • United Healthcare Options (PPO) (includes Empire PPO, GEHA, Compass Rose)
    • OneNet PPO, Inc.
    • United Healthcare Choice
    • United Healthcare Core Essential (HMO)
    • Optimum Choice
    • United Healthcare Navigate
    • United Healthcare Compass (HMO)
    • CIGNA HMO Open Access (OA)
    • Network OA
    • POS OA & OA Plus
    • CIGNA EPO
    • PPO and PPO Plus
    • Choice Fund PPO
    • CFBSBC Blue Preferred PPO
    • HealthyBlue PPO
    • CFBCBS Blue Choice Opt Out Open Access
    • BlueChoice Open Access
    • Blue Choice Advantage & Healthy Blue (HMO, POS)
    • Aetna Traditional Choice (PPO)
    • Innovation Health: Indemnity
    • Aetna Open Choice (PPO)
    • Innovation Health: PPO
    • Aetna Managed Choice (POS)
    • Innovation Health: POS Plus
    • Aetna Elect Choice/ Open Access (POS)
    • Innovation Health: Open Network Only Plus
    • Aetna HMO-Open Access/Select OA/HealthFund/Health Network Option OA
    • Innovation Health: POS
    • Open HMO
    • Opoen HMO Option
    • Open EPO Plus
    • Aetna Managed Choice Open Access (POS)
    • Choice POS & Choice POS II
    • Innovation Health: Open POS Plus
    • Open POS II
    • Aetna HMO
    • Select HMO/HealthFund/Health Network
    • Aetna Innovations: HMO & EPO Plus

Videos

Education

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)

Awards

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

Ratings and reviews

  • Provider explained things understandably

    4.8
  • Provider listened carefully

    4.8
  • Provider gave easy to understand instructions

    4.9
  • Provider knew medical history

    4.7
  • Provider showed respect

    4.7
  • Provider spent enough time with patient

    4.8
  • Jul 9, 2021

    Doctor has provided superb care during all phases of my treatment, from planning through follow up, including this visit.

  • Jun 28, 2021

    Always attentive and concerned about my well being. The treatments just didn't work.

  • Apr 12, 2021

    Dr. Ahn's care for me & treatment of my cancer (including follow-up visits) had been exemplary.