Dr. Shannon K. Fields

Dr. Betsy Horton is Board Certified in Internal Medicine. A 1994 graduate of Mercer University of Medicine, she did both her internship and residency at Georgia Baptist Medical Center at Mercer. She is an assistant clinical professor in the Department of Community Medicine. Having grown up in the area, she began her practice in Fayetteville, in 1998. She co-sponsors the free Fayette Care Clinic where she also volunteers. Dr. Horton is rated as a Distinguished provider by MediFind in the treatment of Erythromelalgia. Her top areas of expertise are Glucocorticoid-Remediable Aldosteronism, Familial Hypertension, Hypertension, and Hashimoto Thyroiditis.

Ryan Cantwell is a primary care provider, practicing in Internal Medicine in Kennesaw, Georgia. Dr. Cantwell is rated as an Advanced provider by MediFind in the treatment of Erythromelalgia. His top areas of expertise are Maturity Onset Diabetes of the Young, Familial Hypertension, Glucocorticoid-Remediable Aldosteronism, and Hypertension. Dr. Cantwell is currently accepting new patients.

Dr. Marcus received his undergraduate degree from Brandeis University in Waltham, Massachusetts, and his medical degree from State University of New York at Stony Brook. He completed his internship and residency in internal medicine at Emory University affiliated hospitals and is board certified in internal medicine. He is a member of the American College of Physicians and is a member of the Piedmont Clinic Board of Directors. Dr. Marcus has been practicing medicine in the Atlanta area for over 20 years. Prior to joining the Piedmont Physicians Group, he was in private practice and served as the medical director at Mariner HealthCare of Northeast Atlanta. Dr. Marcus has been on staff at Piedmont Hospital since 1993. He has a special interest in preventive medicine and believes his role as a physician is to be a patient advocate. Dr. Marcus is married with two children. In his free time, he enjoys skiing, running, playing guitar, traveling and studying other languages. Dr. Marcus is accepting new patients, including Spanish-speaking patients, and welcomes most major insurance plans. Dr. Marcus is rated as an Advanced provider by MediFind in the treatment of Erythromelalgia. His top areas of expertise are Familial Hypertension, Hypertension, Glucocorticoid-Remediable Aldosteronism, and Sitosterolemia.