Brendan Knowles, D.O., joins the office of Michael Passarello, M.D.


Dr. Brendan Knowles has joined Summit Medical Group as an internal medicine physician with the office of Michael Passarello, M.D. Knowles currently is accepting new patients.

Prior to joining Summit Medical Group, Knowles worked as a physician at Glendive Medical Center in Glendive, Montana.

Knowles earned a bachelor’s degree from The Pennsylvania State University in 2004 and continued his medical education at Philadelphia College of Osteopathic Medicine, where he earned his doctor of osteopathic medicine in 2013.  

Knowles is board-eligible by the American Osteopathic Board of Internal Medicine (AOBIM) and a member of the American Osteopathic Association (AOA), American College of Osteopathic Internists (ACOI) and American College of Physicians (ACP).

He resides in Knoxville with his wife, Heather, and their son, Jacob, 6. In his spare time, Knowles enjoys hobby electronics, reading and hiking.

The office of Michael Passarello, M.D., is located at 501 20th St., Suite 404, in Knoxville. The office is open Monday-Friday, 7:45 a.m.-4:30 p.m. For an appointment, call 865-522-6964.