Meet Us

Meet The Doctors

Dr. Travis A. Witherington

Dr. Travis Witherington is a father of four and fully enjoys life with his wife, Mary, a certified orthotist. Trained as a chemical engineer, he graduated with honors from the University of Tennessee College of Dentistry and completed his internship and residency at UT Medical Center in Knoxville. Thereafter, Dr. Witherington was on active duty as a major with the United States Air Force.

Dr. Witherington is American Board Certified and enjoys learning about new technologies and innovative practices. Dr. Witherington is an active member of several esteemed professional organizations, including the American Association of Oral and Maxillofacial Surgeons, the American Academy of Implant Dentistry, and Tennessee Society of Oral and Maxillofacial Surgeons.

Dr. Witherington's personal interests include martial arts, amateur radio, sailing, and scuba. Dr. Witherington has an Airline Transport Pilot License and is a certified flight instructor and FAA Aviation Safety Counselor.

Dr. Andrew C. Cheung

Dr. Andrew Cheung took an unusual route to The University of Michigan, where he received his Doctor of Dental Surgery. Dr. Cheung discovered his true passion while volunteering at the Texas Medical Center while pursuing a degree in music at Rice University in Houston. Dr. Cheung began his training as a

violinist at age 5.

Since receiving his degree, Dr. Cheung has furthered his education with several externships in oral and maxillofacial surgery at The University of Michigan, Vanderbilt and Seton Hall. He then completed a one-year residency in general dental practice at The University of Tennessee Medical Center in Knoxville and continued his specialty training in oral and maxillofacial surgery for four more years.

It was during his months of anesthesia training that he met his wife Leigh Ann, who is a Certified Registered Nurse Anesthetist. She continues to support his many endeavors including music, traveling, and photography. Dr. Cheung has also written several published works in oral and maxillofacial surgery and one pending in Plastic and Reconstructive Surgery. He was recognized as a Diplomate and Fellow of the American Board of Oral Maxillofacial Surgery in March of 2008.

Dr. Joshua A. Campbell

Dr. Campbell traveled to the University of Tennessee Medical Center in Knoxville, Tennessee, during his fourth year of graduate studies to take part in an externship dedicated to oral and maxillofacial surgery. He instantly fell in love with the area and the people. The following year he accepted one of the prestigious positions at the University of Tennessee in the Oral and Maxillofacial Surgery Residency Program. The education he received at UT has prepared him for all aspects of diagnosis and treatment in oral and maxillofacial surgery. While there, Dr. Campbell co-authored a book chapter, "Langerhans Cell Histiocytosis", that will be included in a prominent publication.

Dr. Campbell is deeply committed to serving others and has participated in dental screenings and preventive oral care education. He has also worked as a personal care assistant for mentally and physically disabled adults. His service in the medical field includes being an instructor for Advanced Trauma Life Support (ATLS) classes available to medical professionals.

Dr. Campbell enjoys spending time with his family, University of Tennessee sports, music, performing arts, golf, hunting, and fishing. He considers himself fortunate to serve the people of Tennessee. We are certainly delighted that he is a part of Oral Surgery Specialists of Tennessee.