About Us

Our Medical Director
Marc A. Valley, MD, MS, CPE

Born in a small community outside of Sacramento California, Dr. Marc Valley received his undergraduate degree in Biochemistry from the University of California in 1980. In 1984, he received his medical degree from Loma Linda University Medical School in California. After completing his surgical internship in Los Angeles, California, Dr. Valley joined the Air Force to complete his residency in Anesthesiology and his Pain Management fellowship at Johns Hopkins Hospital in Baltimore. Since leaving the Air Force in 1996, Dr. Valley has been in private practice in Arkansas and most recently in Eastern Tennessee. Dr. Marc Valley has been the medical director at CIRCE Medical Services since 2012.

Dr. Valley is a member of the International Spinal Injection Society, the American Society of Interventional Pain Physicians, and the International Neuromodulation Society. His clinical interests include minimally invasive spinal surgery, cancer pain, and neuropathic pain. Dr. Valley and his wife Patricia have five children.


Call Our Chattanooga Office at (423) 531-0001

Call Our Johnson City Office at (423) 282-1171

8:30a - 5:00p M-Th
8:30a - 12:00p F
Closed Sat-Sun
Our Providers
Sherry F. Owens, RN, CCRN, BSN, FNP-C

Sherry Owens joined the CIRCE Medical Services team in 2013 as a Nurse Practitioner. Ms. Owens received her A.S. in Nursing in 2001. She obtained her B.S. in Nursing in 2009 and her Master of Science degree in Nursing in 2012 from Southern Adventist University.

Prior to joining the CIRCE Medical Services team, Ms. Owens served as a Critical Care Registered Nurse in the Erlanger Medical Center's Shock Trauma Intensive Care Unit and received certifications in Advanced Cardiovascular Life Support (ACLS) and Pediatric Advanced Life Support (PALS).

Ms. Owens is a member of the American Association of Critical-Care Nurses (AACN) and the American Academy of Nurse Practitioners (AANP).

Ms. Owens sees patients at our Chattanooga Clinic.

Ashley Pierson, PA-C

Ashley Pierson joined CIRCE Medical Services as a Physician Assistant in November 2014. Ms. Pierson completed her BA in Psychology, magna cum laude, at the University of Tennessee at Knoxville, and received her MS in Physician Assistant Studies, summa cum laude, from Southern University.

Before joining our team, Ms. Pierson worked at Mountain State Medical Group's Johnson City Trauma Center, where she obtained certifications in Advanced Cardiovascular Life Support (ACLS) and Advanced Traumatic Life Support (ATLS), and assisted with surgical procedures.

Ms. Pierson is a provider at our Johnson City Clinic.

Amy Flint, PA-C

(under construction)

To schedule an appointment, please call either our Chattanooga Clinic number at (423) 531-0001 or our Johnson City Clinic number at (423) 282-1171 and speak with an appointment coordinator. If you are a NEW PATIENT it is recommended to download and print off the PATIENT REGISTRATION Packet (found under Patient Information)and bring it with you to your first appointment. This will save you time and allow you to collect any information that may require a little time to find.

When looking for a treatment center to help you with your chronic pain, it is important to find a setting that is appropriately licensed to provide comprehensive, state-of-the-art treatment with clinicians specifically trained and experienced in treating chronic pain.

At CIRCE Medical Services, our team is trained in the latest advancements in cutting- edge chronic pain treatment.

Do you suffer from continual back pain and discomfort? Dr. Marc Valley leads a staff of qualified health professionals that will work to diagnose and treat your problem.

  • Expert Diagnosis
  • Patient Education
  • Various Treatment Options


Chattanooga Clinic
1010 East Third Street, Suite 201
Chattanooga, TN 37403
(423) 531- 0001 PHONE
(423) 531- 0002 FAX
Johnson City Office
411 Princeton Road, Suite 101
Johnson City, TN 37601
(423) 282-1171 PHONE
(423) 282-1181 FAX