In May 2025, physicians logged on and voted for their peers, who are active physicians in Middle Tennessee, in the 2025 Nashville Top Doctors from Nashville Lifestyles magazine. This year 35 employed Ascension Saint Thomas physicians, listed below, were recognized as leaders in providing clinical excellence.
We are honored to have such dedicated physicians who are called to bring health, healing and hope to all.
Cardiovascular
When it comes to your heart, experience matters. From screenings to advanced surgery, start with the team you can trust. At Ascension Saint Thomas Heart, our nationally recognized cardiac team cares for more adult hearts than anyone in the state, offering the largest network of cardiologists with over 45 locations.
Cardiac Electrophysiology
Cardiovascular Disease
- Mark F. Aaron, MD
- Guillermo Nava, MD
- Sasan R. Raissi, MD
- Andrew Sager, MD
- Warren K. Stribling, MD
- Todd G. Tolbert, MD
- Mark A. Zenker, MD
- Andrew O. Zurick, III, MD
Interventional Cardiology
- Adeeb Ahmed, MD
- William F. Fleet, MD
- Paul W. McMullan Jr., MD
- M. Andrew Morse, MD
- Kevin M. Rankin, MD
Thoracic and Cardiac Surgery
Primary and Specialty Care
Doctors at Ascension Saint Thomas are here for all your care needs, including new symptoms and concerns, chronic conditions and emotional health.
With 22 primary care locations across the region, Ascension Saint Thomas is committed to meeting this need by growing with our community. Over the past 14 months, we have expanded our team with 25 new primary care providers across Middle Tennessee.
Family Medicine
Gastroenterology - Digestive Health
Infectious Disease
Internal Medicine
Sleep Medicine
Surgery
Experienced surgeons at Ascension Saint Thomas deliver advanced surgical care that’s right for you. When choosing a surgeon at Ascension Saint Thomas, know that your surgeon is part of a national network of experienced specialists, sharing best practices and advanced surgical techniques. Your care team is highly trained in the latest minimally invasive surgery techniques using image-guided and robotic-assisted technology.
General Surgery
Neurological Surgery
- Oran S. Aaronson, MD
- Jason R. Hubbard, MD
- Brian A. O’Shaughnessy, MD
- Scott C. Standard, MD
- Ernest J. Wright, III, MD
Thoracic Surgery
Women’s Services
Whether you need a wellness exam, OB-GYN or maternity care, cancer screenings or other care, doctors at Ascension Saint Thomas are here for you. We know that each woman is unique, we’re here to listen and guide you on your health journey, during every stage of life.
Obstetrics and Gynecology
Find care near you at ascension.org/saintthomas.