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Meet our Physicians 

Scott C. Dulebohn, MD
Appalachian Neurosurgical Clinic 

Scott C. Dulebohn, MD, is a neurosurgeon with a concentrated emphasis in spine and pain care. He received both a bachelor's degree in Economics and his medical degree at the University of Missouri.

He served as a neurosurgeon in spine and pain surgery at Southern Coos Hospital and Curry General Hospital, both in Coos Bay, Ore. He also practiced neurosurgery in Duluth, Minn., where he started an interventional chronic pain program with stimulators, pumps and other interventional pain techniques; and Omaha, Neb., where he was a general neurosurgeon in private practice and ran the neurosurgery division of the pain clinic with another physician at the University of Nebraska.

Dr. Dulebohn is board-certified by the American Board of Neurosurgery. He is a member of the American Association of Neurosurgeons plus the joint section of Pain, Spine, Tumor, Trauma; Congress of Neurosurgeons; American Board of Pain Medicine; American and International Neuromodulation Society; American College of Spine Surgery; and the North American Spine Surgeons.  

Rebekah Austin, MD
MSMG Neurosurgery

Austin received her medical degree from Wake Forest University/Bowman Gray School of Medicine, Winston-Salem, N.C. She completed her internship in general surgery at Wake Forest University/Baptist Medical Center, and her neurological surgery fellowships at Wake Forest and Tulane University Medical Center/Charity Hospital of Louisiana, New Orleans.

She is a member of the American Association of Neurological Surgeons, the Section on Tumor & AANS, the Congress of Neurological Surgeons and the American Medical Association.

William Beringer, DO
East Tennessee Brain and Spine Center

Dr. Beringer's academic interests include complex and minimally invasive spine surgery, image guidance adjuncts for the treatment of brain and spine disease and stereotactic surgery radiosurgery.  His surgical philosophy is to minimize collateral tissue damage in treating brain and spinal disorders.  Furthermore, he treats patients as if they were his own family members in a conscientious, straight-forward manner.

Dr. Beringer practiced neurosurgery in Oklahoma City for five years before coming back to the Southeast to practice with East Tennessee Brain and Spine Center.

Timothy Dullager, MDTimothy M. Fullager, MD
East Tennessee Brain and Spine

Before joining East Tennessee Brain and Spine Dr. Fullagar was at the Colorado Neurologic Institute in Denver. A board-certified neurosurgeon, Dr. Fullagar's interests in neurosurgery include general neurosurgical management of cervical and lumbar spine disorders, peripheral nerve problems, as well as treatment of intracranial pathology. His principal interest has been in the treatment of brain tumors, and he has participated in several clinical trials in the surgical treatment of brain tumors as well as postoperative chemotherapy. He also recently completed 15 years of duty in the Naval Reserve, leaving at the rank of commander. He currently lives in Johnson City with his wife and two sons.

Ben Knox, MDBen Knox, MD
Appalachian Orthopedic Associates

Dr. Knox specializes in Orthopaedic Surgery. He is board-certified by the American Board of Orthopaedic Surgery.

Dr. Knox received his medical degree from Dartmouth college, completed his residency at the University of Pittsburgh and medical school at Johns Hopkins. His spine fellowship was at Carolinas Medical Center in Charlotte, NC.

He is a member of American Academy of Othopaedic Surgeons and North American Spine Society

Dr. Knox's professional interests include degenerative conditions of the cervical spine (neck), lumbar spine (lower back), and kyphoplasty. He and his wife, Lisa, have two daughters, Abigail and Alexandra. In his spare time he enjoys tennis, golf, skiing, and bluegrass banjo.

David Wiles, MDDavid A. Wiles
East Tennessee Brain and Spine Center

Dr. Wiles is an active consultant within the spinal industry and has been involved in the development of numerous spinal surgery devices and surgical techniques. He is involved in several investigational studies with the FDA. He frequently serves as a faculty member at teaching conferences held throughout the United States for spine surgeons and orthopedic and neurosurgical residents. Dr. Wiles serves on the Critical Care Committee at Johnson City Medical Center. He has been in practice here since 1997, making Johnson City home for himself, his wife and their three children.

Physician Assistants

Jamie Casey, PA-CJamie Casey, PA-C

Jamie has worked in Cardiothoracic Surgery since graduation and in 2008 joined East Tennessee Brain and Spine and brings valued surgical and critical care experience.

Steve McLaughlin, PA-CSteve McLaughlin, PA-C

Steve was a medic/OR technician in the Army. He moved to Tennessee in 1997 and joined East Tennessee Brain and Spine in 2000.

Isaac O'Dell, PA-C

Isaac O'Dell, PA-C

Isaac joined East Tennessee Brain and Spine in 2005


Wes Perry, PA-CWes Perry, PA-C

Wes was in general orthopedics from 1987- 2001, and in 2001 joined East Tennessee Brain and Spine. From 1977-1980 he was a military medic in the Army.

Tom Truman, PA-C

Tom Truman, PA-C

Thomas is on the National Commission for Certification of Physicians and is a Fellow of Tennessee and American Academy of Physician Assistants. He has practiced at Appalachian Neurosurgical Clinic since 1982.

Michael Johnson, PA

Michael graduated from the physician assistant program at Alderson-Broaddus College in Philippi, WV.  He completed his PA internship at West Virginia School of Medicine in Charleston, WV. He is board certified by the National Commission on Certification of Physicians Assistants.

 Jason Walls, PA-C

Jason served as a lieutenant in the United States Navy prior to moving to Johnson City.
Ricky Maupin, PA-C

Ricky is a native of the Tri-cities area.  He joined the team at East Tenness
ee Brain and Spine Center in 2012.

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