Dirk Davidson, MD

Supervising Physician, Medical Oncology/Hematology

Board Certifications
American Board of Internal Medicine
American Board of Internal Medicine – Medical Oncology Recertification

Dirk Davidson founded Tennessee Plateau Oncology in 2006 with a simple mission: bring the most advanced oncology and hematology treatments and compassionate care to residents of the Upper Cumberland region. Dirk earned his undergraduate degree from Dartmouth College in 1978 and his M.D. from West Virginia University School of Medicine in 1984. Before forming Tennessee Plateau Oncology, he served as an emergency room physician in South Carolina and worked for more than 12 years as an oncology/hematology physician in Knoxville, TN. He is an active member in the American College of Physicians and the American Medical Association.

Dirk brings extensive clinical research experience to his role as supervising physician. As a result, his practice is often the first practice in Tennessee to deploy new treatment protocols. He actively participates as a sub-investigator in the Eastern Cooperative Oncology Group, Cancer Biotherapy Research Group, and with a number of pharmaceutical research protocols. He is a principal investigator on Roberts and Novartis protocols.

Even though Dirk was born in Minneapolis, his roots are firmly planted in the Upper Cumberland region.

Ally Tucciarelli Freeborn, PA-C

Crossville Clinic

Ally is a nationally certified Physician Assistant from Hudson, a small town in Northeast Ohio. She earned her Bachelor of Science in Biology from Gannon University in Erie, Pennsylvania. While attending Gannon, she was a member of the Division II Women’s Softball team. She moved to Tennessee in 2020 and graduated with her Masters of Medical Science in Physician Assistant Studies in December of 2022 from Lincoln Memorial University in Knoxville.

In her free time, she enjoys being with her fiancé, Jayce, and their pets, Leo and Knox. When she gets the chance, she loves to go back to Ohio to see her family, especially her nephew! She is excited to be working with oncology patients and to be a part of the incredible team at Tennessee Plateau Oncology!.

Linda Barnwell

Practice Administrator

Linda Barnwell is the Practice Administrator for Tennessee Plateau Oncology. She started with the practice January of 2011. She has held administrative positions within the medical profession since 1979. She graduated from University of Kentucky in 1979 with a Bachelor’s Degree in Business Administration. Linda is a member of the Tennessee Oncology Practice Society, National Chapter Compliance Corp., Local Chapter of NAPW, LPP Select with the ION Program, State of Tennessee Notary Public and Local Chapter of the American Cancer Society, Relay for Life in Cumberland County. She is an active member of the Homesteads Baptist Church. She married Frank Barnwell in 1984 and together they have three children, Christy, Kristie and Rebecca, and 5 grandchildren, Kellyanne, Lane, McKenna, Zoe and Justice.