Proven Expertise

More than 100 combined staff years of cancer treatment experience ready to work for your recovery.

By choosing us, you have peace of mind knowing you’ll receive the most advanced treatment options available. Our experienced, highly-credentialed cancer specialist team is second to none in the region. In fact, we are often the first practice nationwide to administer the latest drug therapies for our more than 800 active patients.

What really makes us different is that we are close to home. You get the small town feel of a staff that knows you and your family, and takes the time for the small details of treatment and recovery.

TPO Cancer Center Group Photo

“During my four years of treatment, I think I’ve met everyone on the Tennessee Plateau Oncology staff. Without exception, they are knowledgeable, friendly, courteous and helpful. In short, my treatment experience at Tennessee Plateau Oncology is very positive.”

— Terry W., Patient, Crossville, TN

Dr. Dirk Davidson

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 American Medical Association.

Dirk beings 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.

Tracey Stansbury

Tracey Stansberry, Advanced Practice Nurse

Crossville Clinic

Board Certifications
Advanced Oncology Certified Nurse (AOCN)
Adult Health Clinical Nurse Specialist Certification (ACNS-BC)
Advanced Cardiac Life Support (ACLS)
Basic Life Support (BLS)

Tracey is an Advanced Practice Nurse with more than 13 years of experience with Tennessee Plateau Oncology. Tracey earned her B.S. in Business Administration in 1989 and M.S. in Nursing in 2001, both degrees from the University of Tennessee-Knoxville. She worked with community leaders in Scott County in 2003 to help open what is now Tennessee Plateau Oncology’s Scott County Clinic and continues to act as its Director of Clinical Services under the direction of Dr. Dirk Davidson.

Tracey is an active member of the American Nurses Association, the Tennessee Nurses Association, the Oncology Nursing Society, and Sigma Theta Tau. She is also active in many community organizations, including the Plateau Players, Historic Rugby, the Scott County Benefit Auction Committee, and the Scott County Relay for Life Survivorship Committee. She is active member of the 1st Presbyterian Church of Huntsville, TN where she participates in the church’s music program, providing flute music for special services. She married Don Stansberry, III in 1986, and they have two children, Frank and Lisa.

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Terrie L. Jackson, PA-C


Terrie is a native of Slidell, Louisiana, a suburb of New Orleans. She earned her Bachelor of Science in Kinesiology from The University of Southern Mississippi. During her time there, she represented her class as Junior Homecoming Maid and was named Who’s Who Among American Colleges and Universities her senior year. She made her way to Tennessee in 2018 and graduated with her Masters in Physician Assistant Studies in December of 2020 from South College. She is a member of the Tennessee Academy of Physician Assistants.

On the weekends, she enjoys spending time running through Knoxville’s best parks, hiking in the Great Smoky Mountains with her fiancé, Chris, and eating her way through East Tennessee. She loves working with oncology patients and is excited to be a part of the incredible team at Tennessee Plateau Oncology!

Bio Headshot

Teylor E. Harrity, PA-C


Teylor is a certified Physician Assistant, she earned her B.S. in Biology of Medical Science at Mississippi College. She went on to earn her Master of Physician Assistant Studies through the military, Interservice Physician Assistant program, accredited through the University of Nebraska Medical Center. She is an active member of the Tennessee Academy Physician Assistants association as well as the Mississippi Academy of Physician Assistants association.

Teylor is currently a first lieutenant in the United States Army, three years active duty and four years with the Mississippi National Guard.

Her husband, Daniel, is a flight instructor here in Crossville so in her free time she is flying with him. When she isn’t in the air she is usually on a hike with their four-legged child, Hudson, their beloved four year old golden retriever.

Linda Barnwell

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.