Current Medical Residents

2024 - 2025 Radiation Oncology Residents

 

  • Kaleb Darrow, MD

    Chief Resident '25

    Hometown: Knoxville, TN

    Undergraduate: University of Tennessee

    Medical school: University of Tennessee Health Science Center

    Internship: University of Tennessee Medical Center

    Research interests: Healthcare disparities, improving access to cancer care and clinical trials, predictors of treatment failure

    Outside interests: Hiking, camping, cooking, college football, professional basketball

  • Kyra McComas, MD

    Chief Resident '25

    Hometown: Salt Lake City, UT

    Undergraduate: Santa Clara University, CA

    Medical School: University of Utah School of Medicine, Salt Lake City, UT

    Internship: Providence Sacred Heart Medical Center Transitional Year, Spokane, WA

    Research Interests: Global health/oncology, adaptive radiotherapy, advocacy, quality of life

    Outside Interests: Hiking, biking, skiing, snowshoeing, writing, reading, history, recipe-developing, cooking, sports, weightlifting, traveling

  • Ha Pham, MD, PhD

    Chief Resident '25

    Hometown: Saigon, Vietnam 

    Undergraduate: College of Saint Benedict/Saint John’s University

    Medical School: University of Central Florida 

    Graduate School: Carnegie Mellon University

    Internship: Internal Medicine, University of Illinois at Chicago 

    Research Interests: Radiosensitizer and biosensor development, DNA damage response, tumor microenvironment

    Outside Interests: Singing karaoke, biking, dogs, music

  • Hayden Byrd, M.D.

    Resident '26

    Hometown: Austin, Texas

    Undergraduate: Sewanee- The University of The South

    Medical school: University of Texas at Houston

    Internship: University of Tennessee Medical Center at Knoxville

    Research interests: Non-small cell lung cancer; SBRT

    Outside interests: Community; Lacrosse; Outdoors (backpacking, climbing, caving, mountaineering); Violin; Writing

  • Hometown: Memphis, TN

    Undergraduate: Vanderbilt University

    Medical School: University of Florida

    Internship: Vanderbilt University Medical Center, Internal Medicine Prelim

    Research Interests: rare disease, treatment toxicity, particle therapy

    Outside Interests: dancing (salsa, bachata), painting, home building and interior design, plugging into my faith community, travel, going to the zoo, shopping, horseback riding, being outdoors, eating good food that other people make, writing and inspiring others to live their best lives

  • Michael Kessler, MD

    Resident '27

    Hometown: Nashville, TN

    Undergraduate: University of Wisconsin

    Medical school: University of Tennessee

    Internship: Internal Medicine, University of Tennessee Nashville

    Research interests: radiation fibrosis, cancer screening/survivorship, nutrition

    Outside interests: camping, fishing, intramural soccer/volleyball, fitness/weightlifting, running, Predators hockey

  • Gustavo Sosa, MD

    Resident '27

    Hometown: Sacramento, CA

    Undergraduate: University of Southern California

    Medical School: University of Wisconsin

    Internship: Internal Medicine, University of Nevada, Las Vegas

    Research interests: oligometastatic disease; targeted radionuclide therapy

    Outside interests: cooking, college football, history, exploring local restaurants, sci-fi movies, travel, spending time with family and friends

  • Betsy Crosswhite, MD

    Resident '28

    Hometown: Tupelo, MS

    Undergraduate: University of Mississippi

    Medical school: University of Mississippi Medical Center

    Internship: Vanderbilt University Medical Center

               Research interests: clinical trials, improving access to cancer care, treatment toxicity

    Outside interests: cooking, trying new restaurants, ballet, faith

  • Callie Dacyczyn, MD

    Resident '28

    Hometown: South Deerfield, Massachusetts

    Undergraduate: University of Massachusetts Amherst

    Medical school: Eastern Virginial Medical School

    Internship: Eastern Virginial Medical School

    Research interests: Healthcare disparities, palliative therapy, quality of life

    Outside interests: Hiking, rock climbing, music, traveling, yoga, weightlifting

  • David Gannon, MD

    Resident '28

    Hometown: Minneapolis, Minnesota

    Undergraduate: Lafayette College 

    Medical school: Loyola University Chicago 

    Internship: General Surgery, Loyola University Medical Center 

    Research interests: Brachytherapy, SBRT

    Outside interests: Travel, Reading, History, Film