2025 - 2026 Radiation Oncology Residents
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Hayden Byrd, M.D.Chief Resident '26Hometown: 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: Radiation for benign diseases such as low dose radiation for osteoarthritis, toxicity outcomes following radiation, novel indications for radiation. Outside interests: Community; Lacrosse; Outdoors (backpacking, climbing, caving, mountaineering); Violin; Writing 
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Jayden Curry Gracie, M.D.Chief Resident '26Hometown: 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, healthcare system improvement 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 
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Michael Kessler, MDResident '27Hometown: Nashville, TN Undergraduate: University of Wisconsin - Madison Medical school: University of Tennessee Health Science Center Internship: University of Tennessee Nashville Internal Medicine Preliminary Research interests: Brachytherapy, Toxicity/Quality of Life, Lung Cancer, Immunotherapy Outside interests: Camping, fishing, traveling, intramural sports, fitness/weightlifting, running, golf 
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Gustavo Sosa, MDResident '27Hometown: Sacramento, CA Undergraduate: University of Southern California Medical School: University of Wisconsin School of Medicine and Public Health Internship: Internal Medicine, University of Nevada, Las Vegas Research interests: Palliative radiotherapy, bone and soft tissue sarcoma, survivorship Outside interests: cooking, college football, golf, history, exploring the Nashville food scene 
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Betsy Crosswhite, MDResident '28Hometown: Tupelo, MS Undergraduate: University of Mississippi Medical school: University of Mississippi Medical Center Internship: Vanderbilt University Medical Center Research interests: clinical trials, treatment toxicity Outside interests: cooking, trying new restaurants, ballet, faith 
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Callie Rizzardi, MDResident '28Hometown: South Deerfield, Massachusetts Undergraduate: University of Massachusetts Amherst Medical school: Eastern Virginial Medical School Internship: Eastern Virginial Medical School Research interests: palliative therapy, quality of life Outside interests: hiking, rock climbing, music, traveling, yoga, weightlifting 
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David Gannon, MDResident '28Hometown: 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 
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Alemu Kihshen, MDResident '29Hometown: Wukro, Tigray, Ethiopia Medical school: Addis Ababa University School of Medicine, Ethiopia Internship: Internal Medicine, University of Louisville Research interests: Global oncology care disparities, Brachytherapy, benign disease Outside interests: History, English Premier League, playing soccer, running 
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Jacob Menke, MDResident '29Hometown: Cincinnati, OH Undergraduate: Rhodes College Medical School: University of Cincinnati Internship: Transitional Year; TriStar Centennial Medical Center, Nashville, TN Research Interests: head and neck cancers, prostate cancer, benign diseases Outside Interests: playing pickleball, country music, watching sports, working out, trying new restaurants 
 
 
 
 
 
 
