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
- Proton therapy
- Stereotactic Body Radiosurgery (Cyberknife)
- Intensity Modulated Radiation Therapy
- Volumetric Modulated Arc Therapy (RapidArc)
- Electron Beam Radiotherapy
- 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
- Whole Breast Radiation Therapy
Procedures I perform
- Brachytherapy
- Breast Cancer
- Colorectal Cancer Treatment
- Cyberknife
- Genitourinary Cancer Treatment
- Intrafraction Tracking Motion
- Intraoperative Radiation Therapy
- Lymphoma Treatment
- Mep (MOTOR EVOKED POTENTIALS)
- Motion Fluoroscopic Evaluation
- Neuroendocrine Tumor Radiation Treatment
- Radiation Dosimetry Calculation
- Single Photon Emission Computed Tomography
- Special Dosimetry
- Stereotactic Body Radiation Therapy For Brain Tumors
- Transitional Cell Carcinoma Treatment
- Whole Breast Radiation Therapy
Insurance
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.
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List of insurance plans we accept
- United HealthCare Community Plan - Maryland Health Choice Program
- Kaiser Permanente Signature
- Magellan Complete Care of VA - VA Medicaid MCO
- BCBS of Michigan (BCN Advantage,Security Blue, Freedom, Medicare PLUS Blue Group PPO)
- Erickson Advantage Plans
- CareFirst EPO
- Private Fee-for-Service Plans (PFFS)
- UnitedHealthcare Individual Exchange Plans
- Employee Health Plan
- Anthem BCBS Medi Blue Plus
- OA Plus
- Aetna Worker's Compensation Network
- Aetna Traditional Choice (PPO)
- HealthyBlue PPO
- IH-Open HMO Option
- Johns Hopkins Advantage MD HMO
- Cigna True Choice Plus Medicare (PPO)
- Lasso Healthcare - Medicare Medical Savings Account
- Optimum Choice & Optimum Choice Preferred (POS) Cardiac Global
- Veterans Affairs Community Care Network
- M.D. IPA Preferred (POS)
- MedStar Family Choice - Maryland Health Choice
- AmeriHealth Caritas DC Healthy Families
- Aetna Advantage 5750
- Optima Family Care MCO - VA Medicaid MCO
- Aetna Better Health of VA
- Alterwood Advanatge HMO & DSNP Plans
- Aetna Signature Administrator PPO/TPA
- Aetna HMO-Open Access/Select OA/HealthFund/Health Network Option OA
- Kaiser Permanente Flexible Choice POS Cardiac Global
- Fee-for-Service (FFS) District of Columbia, Maryland and Virginia Medicaid
- TRICARE East Prime
- IH-POS
- Mamsi Life & Health (Indem./PPO)
- Choice Care Network/HUMANA (PPO)
- Anthem BCBS of VA HealthKeepers (POS & POS OA)
- Amerigroup DC Healthy Families
- Aetna Elect Choice/ Open Access (POS)
- Network OA
- CIGNA EPO
- Kaiser Permanente Signature - Added Choice
- Options PPO Cardiac Global
- MedStar Family Choice DC Healthy Families
- Coventry of Delaware HMO/PPO
- Cigna Achieve Medicare (HMO C-SNP)
- Kaiser Permanente HMO Plus and DHMO Plus Member
- Aetna Quality Point of Service (POS)
- Coventry Health Care National Network PPO
- CIGNA HMO Open Access
- CareFirst Federal Employee Program (Std. & Basic PPO)
- Aetna Medicare Advantage PFFS Plan
- United Student Resources
- NYC Medicare Advantage Plus
- CIGNA PPO
- IH-Network Only Plus
- IH-HMO
- Maryland Physicians Care MCO
- Aetna Open Choice (PPO)
- Aetna Basic
- Aetna Managed Choice Open Access (POS)
- United Healthcare Navigate Cardiac Global
- Aetna Classic 5000PD
- Private Health Care Systems (PPO)
- Blue Choice Advantage
- POS OA
- HUMANA/Choice Care Medicare Plans (Choice, Gold Choice)
- Cigna Preferred Medicare (HMO)
- Geisinger Medicare Advantage
- Priority Partners - Maryland Health Choice
- IH-PPO
- Aetna Managed Choice (POS)
- Mamsi Life & Health (Indem./PPO) Cardiac Global
- OCI Direct (HMO)
- Tricare Reserve Select
- Optimum Choice
- CareFirst Community Health Plan of MD
- CIGNA Connect EPO
- Anthem BCBS of VA HealthKeepers (HMO)
- WellPoint Maryland - Maryland Health Choice
- Aetna Student Health Insurance
- HumanaChoice PPO
- MultiPlan, Inc
- CareFirst Group Medicare Advantage prescription drug benefit (PPO)
- Aetna Medicare Advantage HMO & PPO Plans
- CIGNA HMO & Network (HMO)
- CareFirst Maryland Indemnity or PPO
- CIGNA PPO Plus
- CareFirst MedStar Select PPO
- MD IPA (HMO) & MD IPA Preferred Cardiac Global
- Medicare Advantage - Advantra Value (PPO)
- Great-West Healthcare POS/CIGNA
- CareFirst Blue Preferred PPO
- Aetna Classic 5000
- UHC Passport
- Johns Hopkins Advantage MD PPO
- Aetna VA Exchange
- Kaiser Permaenete Signature - Added Choice Cardiac Global
- Sentara Health
- Cigna True Choice Medicare (PPO)
- Choice POS II
- Aetna Classic 3500
- CareFirst Maryland Point of Service Plan
- Humana Gold Plus HMO
- United Healthcare Community Plan - VA Medicaid MCO
- Humana Medicare Advantage - PPO
- BCBS Out-of-State Medicare Plans (Blue Advantage)
- United Healthcare Choice
- CareFirst NASCO
- BlueChoice Open Access
- Aetna Elect Choice/ EPO (Aetna Health Fund)
- UHC Group Medicare Advantage Plans (HMO, POS, PPO)
- CareFirst Administrators
- Anthem BCBS of VA HealthKeepers Plus
- Choice POS II Open Access
- United Healthcare Select Plus (POS)
- CIGNA POS/Network POS
- CareFirst Blue Choice Opt Out Open Access
- Beech Street PPO
- Anthem BCBS Medi Blue SNP
- CareFirst Dual Prime HMO-SNP
- Johns Hopkins Advantage MD PLUS PPO
- United Healthcare Choice Plus Cardiac Global
- Medicare Direct
- Kaiser Permanente Medicare Plus
- CareFirst BlueCross BlueShield Advantage Core/Enhanced
- IH-Open EPO Plus
- Uniformed Services Family Health Plan
- CareFirst (NCA) Indemnity
- Anthem BCBS of VA Key Care POS/PPO/Indemnity
- Anthem BCBS Medi Blue Dual Adv
- CareFirst FEP Blue Focus
- Healthy Blue (HMO, POS)
- Core Essential (HMO)
- CareFirst Blue Choice Opt Out Plus Open Access (POS)
- TRICARE East Select
- CareFirst Blue Card Program
- Aetna Better Health of MD
- IH-EPO Plus
- Optimum Choice Preferred (POS)
- Jai Medical Systems - Maryland Health Choice
- DC/MD SHOP QHP Small Business Plans
- TRICARE for Life East
- CareFirst MedStar PPO
- UnitedHealthcare Medicare Adv. Special Needs Plans
- Anthem Federal Employee Program Standard
- AmeriHealth Caritas DC Healthcare Alliance
- Cigna Alliance Medicare (HMO)
- Humana Medicare Advantage - HMO Open Access
- Health Services for Children with Special Needs
- Anthem Federal Employee Program Basic
- Advantra Platinum (PPO)
- United Healthcare Options (PPO)
- HumanaChoice Honor's plan PPO
- Aetna Advantage 6350
- Kaiser Maryland Medicaid MCO
- TriWest Healthcare Alliance
- IH-Open POS Plus
- United Medicare Private Fee-for-Service (PFFS) plans
- UnitedHealthcare Medicare Advantage DSNP District of Columbia
- Police and Fire Clinic
- Cigna TotalCare (HMO D-SNP)
- IH-Indemnity
- United Healthcare Select HMO-EPO/NPP Cardiac Global
- MedStar Family Choice DC Healthcare Alliance
- Navigate
- Aetna Advantage 6350PD
- AMERIVANTAGE/Amerigroup Community Care
- Select HMO/HealthFund/Health Network
- UnitedHealthcare and AARP Medicare Complete Plans
- IH-Open Network Only Plus
- Kaiser Permanente Select Cardiac Global
- United Healthcare Choice Plus
- Kaiser Permanente Select - Added Choice
- First Health PPO
- Choice POS
- Aetna HMO
- United Healthcare Choice Cardiac Global
- M.D. IPA (HMO)
- IH-Open HMO
- United Healthcare Select HMO - EPO/NPP
- Kaiser Permanente Flexible Choice 3-tier POS
- CIGNA Indemnity
- Choice Fund PPO
- Amerigroup DC Alliance
- CareFirst Group Medicare Advantage
- IH-POS Plus
- HighMark
- CIGNA SureFit (HMO)
- CareFirst BlueChoice HMO
- Kaiser Permanente Medicare Advantage Signature and Select
- Kaiser Permanente Select
- First Health PPO
- Aetna Premier 200PD
- Medicare FFS
- Coventry Health Care of Virginia
- IH-Open POS II
Videos
Education
Board Certification: American Board of Radiology, Diagnostic Radiology
Fellowship: University of Texas MD Anderson Cancer Center (2009)
Residency: Montefiore Medical Center (2008)
Internship: Hurley Medical Center GME (2004)
Medical School: Yeshiva University Albert Einstein College of Medicine (2003)
Awards
- Washingtonian Top Doc 2025 Castle Connolly, America's Top Doctors
- American College of Nuclear Physicians