Volunteer Activities

Committee Member, Providence Cancer Society

Member, School Advisory Committee

Coaching, Soccer and Basketball teams

Article Reviewer, Scientific Journals

Other Activities

Editor, “Handbook of Evidence-Based Radiation Oncology.” This leading medical text is used by Radiation Oncologists worldwide, and has been translated to Japanese, Turkish, Chinese, and Russian editions.

Dr. Hansen’s research has been published in leading scientific journals and presented at national and regional meetings.

He wrote editorials for a nationwide journal club for Radiation Oncologists.

He served on the Radiation Oncology Institute Dephi Panel to determine the most pressing national Radiation Oncology research needs.

He is a member of the American Society of Radiation Oncology.

EDUCATION & TRAINING

Residency, Radiation Oncology, University of California, San Francisco, San Francisco, CA, 2007

Internship, Internal Medicine, St. Mary’s Medical Center, San Francisco, CA, 2003

MD, Oregon Health & Science University, Portland, OR, 2002

BA, Yale University, New Haven, CT, 1998

BOARD CERTIFICATION

Radiation Oncology

LEADERSHIP

Medical Director of Radiation Oncology at Providence St. Vincent

Former Member of The Oregon Clinic Board of Directors

Former President of the Oregon Radiation Oncology Society

Radiation Oncology Institute panel member that determined the most pressing national Radiation Oncology research needs

Wrote editorials for a nationwide journal club for Radiation Oncologists

HONORS

Portland Monthly Magazine, “Top Doctors,” 2012, 2015, 2016, 2017, 2018, 2019, 2025

United States Presidential Scholar, Selected by President Clinton

Chief Resident, Radiation Oncology, University of California San Francisco (UCSF)

Magna Cum Laude, Oregon Health & Science University (OHSU)

Phi Beta Kappa, Yale University

Magna Cum Laude, Yale University

Publications

Jones C, Hansen EK, Mozena J. Radiation therapy for plantar fibromas (Ledderhose Disease). J Am Podiatr Med Assoc 2022; 112(1): 1-3.

Yamazaki T, Gunderson AJ, Gilchrist M, et al. Galunisertib plus neoadjuvant chemoradiotherapy in patients with locally advanced rectal cancer: a single-arm, phase 2 trial. Lancet Oncology 2022; 23(9): 1189-1200.

Hansen EK. Sparing discomfort for the patient or the physician? In regard to Rana et al. Int J Radiat Oncol Biol Phys 2018; 100(5): 1297.

Hansen EK, Roach MR (Editors). Handbook of Evidence-Based Radiation Oncology, 3nd Edition. New York, NY: Springer; 2017

Elliott DA, Nabavizadeh N, Seung S, Hansen EK, Holland JM. Radiation Oncology. In: Contemporary management of oral, head and neck squamous cell carcinoma. New York, NY: Elsevier; 2015.

Bicquart C, Hansen EK, Thomas CR (Editors). Radiation Oncology Study Guide. New York, NY: Springer; 2013

Luick ML, Hansen EK, Greenberg MS, Kim R, Owens M, Moore CJ, Flores M. Primary tracheal non-Hodgkin’s lymphoma. J Clin Oncol 2011; 29(8): 193-5.

Kollmansberger C, Daneshmand S, Hansen EK, et al. Testis Cancer. In: Cancer Medicine, 8th Edition. Shelton, CT: People’s Medical Publishing House; 2010.

Seung S, Bae J, Solhjem M, Bader S, Gannett D, Hansen EK, Louie J, Underhill K, Cha C. IMRT for head and neck cancer in the community setting. Int J Radiat Oncol Biol Phys 2008; 15;72(4):1075-81

Patel S, Hansen E, Wallner P. Transition from residency to your first job. In: American College of Radiation Oncology Practice Management Guide 2008.

Ezzell LC, Hansen EK, Quivey JM, and Xia P. Detection of treatment setup errors between two CT scans for patients with head and neck cancer. Med Phys 2007; 34: 3233-3242

Patel S, Jagsi R, Wilson J, Frank S, Thakker V, and Hansen EK. Results of the 2004 Association of Residents in Radiation Oncology (ARRO) Survey. Int J Radiat Oncol Biol Phys 2006; 66: 1199-1203

Hansen EK, Larson DA, Aubin M, Chen J, Descovich M, Gillis AM, Morin O, Xia P, Pouliot J. Image guided radiotherapy using megavoltage cone-beam CT for treatment of paraspinous tumors in the presence of orthopedic hardware. Int J Radiat Oncol Biol Phys 2006; 66: 323-326

Hansen EK, Bucci MK, Quivey JM, Weinberg V, Xia P. Repeat CT imaging and re-planning during the course of IMRT for head and neck cancer. Int J Radiat Oncol Biol Phys 2006; 64: 355-362

Hansen E, Donohoe M. Health issues of migrant and seasonal farmworkers. J Health Care Poor Underserved 2003; 14: 153-164

Hansen E, Panwala K, Holland J. Postoperative radiation therapy for advanced-stage oropharynx cancer. J Laryngol Otol 2002; 116: 920-924

Wharton C, Grafman J, Flitman S, Hansen E, Brauner J, Marks R, Honda M. Towards neuroanatomical models of analogy: A positron emission tomography study of analogical mapping. Cognit Psychol 2000; 40: 173-197

Wharton C, Grafman J, Flitman S, Hansen E, Brauner J, Marks A, & Honda M. The neuroanatomy of analogical reasoning. In: Holyoak K, Gentner D, Kokinov B, eds. Advances in analogy research: Integration of theory and data from the cognitive, computational, and neural sciences. Sophia, Bulgaria: New Bulgarian University; 1998: 260-269