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Christopher Tien, PhD, DABR

Assistant Professor of Therapeutic Radiology

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Christopher Tien, PhD, DABR


Dr. Christopher Tien is a board-certified therapeutic medical physicist in the department of Therapeutic Radiology and has been the primary brachytherapy physicist at Yale-New Haven Hospital since 2016. Dr. Tien also regularly assists with Gamma Knife radiosurgery. In addition to his clinical involvement, his research focuses on brachytherapy (gynecological, prostate, ocular, and skin) applications, radiobiological modeling, and radiosurgery.

Previously, Dr. Tien practiced at a community hospital in suburban Chicago for 3 years after completing his residency at Brown University/ Rhode Island Hospital. He completed his PhD when he was 25 years old from the University of Florida, which he attended on a full fellowship.

Dr. Tien is a full member of the American Brachytherapy Society (ABS), the American Association of Physicists in Medicine (AAPM), the American Society for Radiation Oncology (ASTRO), and the Yale Cancer Center. He is currently a member of the AAPM Brachytherapy Subcommittee and has been appointed to the AAPM Board of Directors. He also serves on the AAPM Regional Organization Committee, AAPM Medical Physics Education Subcommittee and AAPM Unit #66 (Leadership and Education).

Education & Training

  • Resident
    Brown University (2013)
  • PhD
    University of Florida, Medical Physics (2011)
  • MS
    University of Michigan, Nuclear Engineering and Radiological Sciences (2008)
  • BS
    University of Michigan, Nuclear Engineering and Radiological Sciences (2007)

Honors & Recognition

AwardAwarding OrganizationDate
Editor's Recognition Award as Outstanding ReviewerBrachytherapy (Journal award)2019
Judith Stitt Award for Best physics abstract (of 300+ submissions)American Brachytherapy Society2018
Plenary invited speaker at Annual National MeetingAmerican Brachytherapy Society2018

Professional Service

AAPM: Board of Directors (term: 2021-2023)Board of Directors2021 - Present
AAPM: Brachytherapy Subcommittee (term: 2021-2023)Committee Member2021 - Present
AAPM: Regional Organization Committee (term: 2021-2023)Committee Member2021 - Present
AAPM: Unit#66 - Leadership and Education (term: 2020-2023)Committee Member2020 - Present
AAPM: Radiation Oncology Medical Physics Education Subcommittee (term: 2020-2023)Committee Member2020 - Present
Yale Cancer CenterMember2018 - Present
Connecticut Area Medical Physics Society, AAPMPresident2018
American Brachytherapy SocietyMember2017 - Present
Connecticut Area Medical Physics Society, AAPMBoard Member2017 - 2019
Connecticut Area Medical Physics Society, AAPMMember2016 - Present
American Society of Radiation OncologyMember2013 - Present
American Association of Physicists in Medicine (AAPM)Member2007 - Present

Departments & Organizations