Evolving to meet your needs.  Now.

Through our network of neurologists and PA-Cs, we are able to service patients in multiple locations across TN.  With high standards including medical assistants with college degrees, to PA-C specifically trained in neurology; we are meeting the challenges of the ever increasing need for neurological services in our rapidly growing population.

What we believe

In everything we do we believe in challenging the status quo. We believe in thinking differently. The way we challenge the status quo is in our holistic approach to the practice of neurology in a way that uncovers root cause issues resulting in symptoms.

If you’re the type of person who likes getting to the bottom of things in every aspect of your life, we have the neurology practice for you.

Our team

Dr. Campbell completed her MD at Meharry Medical College (MMC) and her Neurology training at Virginia Commonwealth University.  After 5 years as an associate professor of clinical neurology at Vanderbilt, she co-founded KCA Neurology. In addition to actively seeing patients, Dr. Campbell is an adjunct professor at MMC as well as a primary investigator in many clinical trials.

Gretchen Campbell, MD

Co-Founder | Medical Director

William O. Horton, II

William is a retired Army veteran with 23 years of service in the military. His undergraduate degree is in finance, with a master’s of business administration. 

William O. Horton, II 


Lynn Harb completed her BSRN and worked as an RN, prior to founding FBS (Franklin Billing Service) which has served middle TN for nearly 30 years. 

Lynn Harb

Billing Director 

Ernie Campbell

Ernie completed a BSc in Electrical Engineering at the University of Alabama followed by a master’s degree in engineering technology at Vanderbilt University. His background before KCA was in quality control.

Ernie V. Campbell

Practice Manager


Serving Tennessee since 2008.