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OUR PHYSICIANS


Bruce Tannehill, MDBruce Tannehill, MD

Medical Director, Interventional Radiologist

Dr. Bruce Tannehill earned his medical degree from the East Carolina University School of Medicine in Greenville, North Carolina, where he also completed his internship. He subsequently completed residency and fellowship training at the Medical College of Georgia in Augusta. He is board certified by the American Board of Radiology in Diagnostic and Interventional Radiology and is licensed to practice in the State of Georgia. Dr. Tannehill is a member of the American Medical Association, the American College of Radiology, the Richmond County Medical Society and the Medical Association of Georgia. He specializes in interventional radiology, utilizing the most up-to-date technological advances in his field to better serve his patients.


David Riggans, MDDavid Riggans, MD

Interventional Radiologist

Dr. David Riggans graduated cum laude from Wake Forest University Baptist Medical Center in Winston-Salem, NC, and received his MD from the Medical College of Georgia in Augusta. He subsequently completed an internship at the Atlanta Medical Center, a residency at the University of Kansas Medical Center in Kansas City and a fellowship at the MD Anderson Cancer Center in Houston, TX. Dr. Riggans is board certified by the American Board of Radiology in Diagnostic Radiology and is licensed to practice in the States of Georgia and Kansas. He is a member of the Society of Interventional Radiology, the American Roentgen Ray Society, the Radiological Society of North America, the American College of Radiology and the American Medical Association. A frequent guest lecturer, Dr. Riggans is also the author and co-author of numerous publications.


Samuel Mietling, MDSamuel Mietling, MD

Interventional Radiologist

Dr. Samuel Mietling graduated from Covenant College in Lookout Mountain, Georgia, and received his MD from the University of North Carolina School of Medicine in Chapel Hill. He subsequently completed a residency and fellowship at the University of Florida College of Medicine in Gainesville. Dr. Mietling is board certified by the American Board of Radiology in Diagnostic Radiology and is licensed to practice in the States of Georgia, Florida and Alabama. He is a member of the Medical College of Georgia, the Radiological Society of North America, the American College of Radiology, the Society of Cardiovascular & Interventional Radiology and the International Society of Endovascular Specialists. A frequent guest presenter and scientific exhibitor, Dr. Mietling is also the author and co-author of numerous publications.


Eugene Marnell, MDEugene Marnell, MD

Interventional Radiologist

Dr. Eugene Marnell graduated summa cum laude from the Georgia Institute of Technology in Atlanta and received his MD from the Medical College of Georgia in Augusta, where he subsequently completed an internship and a residency, followed by a fellowship at the Wake Forest University Baptist Medical Center in Winston-Salem, NC. Dr. Marnell is board certified by the American Board of Radiology in Diagnostic Radiology and Vascular & Interventional Radiology, and he is licensed to practice in the State of Georgia. Dr. Marnell is a member of the Society of Interventional Radiology, the Radiological Society of North America, the American College of Radiology and the Medical Association of Georgia.


Karl Weingarten, MDKarl Weingarten, MD

Interventional Radiologist

Dr. Karl Weingarten graduated with high honors from The University of Florida College of Medicine in Gainesville, where he also received his MD. He subsequently completed an internship and a residency at the University of Florida-Shands Hospital, followed by a fellowship at the University of California - San Diego School of Medicine in La Jolla. Dr. Weingarten is board certified by the American Board of Radiology in Diagnostic Radiology and is licensed to practice in the States of Georgia, California, Florida and Alabama. He is a member of the Medical College of Georgia and the San Diego Medical Society.


Peter Armstrong, MDPeter Armstrong, MD

Vascular Surgeon

Dr. Peter Armstrong graduated from West Point and earned his MD from the Vanderbilt University School of Medicine in Nashville, Tennessee. He subsequently completed his internship and residency at the Madigan Army Medical Center in Tacoma, Washington, followed by fellowship training at the Geisinger Medical Center in Danville, Pennsylvania. Dr. Armstrong is a US Army veteran where he served at the medical facilities of several military bases, achieving the rank of Colonel. He is board certified by the American Board of Surgery in Surgery and Vascular Surgery, and he is licensed to practice in the States of Georgia, South Carolina, Pennsylvania, and Oregon. He is a fellow of the American College of Surgeons and a member of the Society for Vascular Surgery, the Association of Military Surgeons of the United States, and the Association of Program Directors for Military Vascular Surgeons. Dr. Armstrong is author and co-author of numerous publications and serves frequently as a guest lecturer. In addition to a wide variety of outpatient procedures he performs at Augusta Vascular Center, Dr. Armstrong also provides numerous inpatient procedures such as endovascular aneurysm repair at University and Trinity Hospitals.


John T. Frederick, MDJohn T. Frederick, MD

Vascular Surgeon

Dr. John Frederick earned his MD from the University of Arkansas for Medical Sciences in Little Rock where he also completed his residency and fellowship training. Dr. Frederick is board certified by the American Board of Surgery in Surgery and Vascular Surgery, and he is licensed to practice in the States of Georgia and South Carolina. He is a resident member of the American College of Surgeons and the Society for Vascular Surgery.



William Hiltz, MDWilliam Hiltz, MD

Vascular Surgeon

Dr. William Hiltz earned his MD from the Medical College of Ohio at Toledo where he also completed his residency. He subsequently completed fellowship training at the University of Arkansas for Medical Sciences in Little Rock. Dr. Hiltz is board certified by the American Board of Surgery in Surgery and Vascular Surgery, and he is licensed to practice in the States of Georgia, Kentucky, and Michigan. He is an associate of the American College of Surgeons and a member of the Peripheral Vascular Surgery Society, as well as a recipient of the Toledo Surgical Society Award and the Dr. Norman Fisher Memorial Scholarship.


Aaron M. Hurd, MDAaron M. Hurd, MD

Vascular & Endovascular Surgeon

Dr. Aaron Hurd is a graduate of the University of Texas in San Antonio, where he also earned a master's degree. He received his MD from St. George's University School of Medicine in Grenada followed by an internship and residency at the University of Tennessee Medical Center in Knoxville. He also completed fellowship training at the Carolinas Medical Center in Charlotte, North Carolina. He is board certified by the American Board of Surgery, and is licensed to practice in the states of Georgia and North Carolina. He is a member of the Society for Vascular Surgery, an associate of the American College of Surgeons and a member of the Peripheral Vascular Surgery Society, as well as a recipient of the Hiram Crutchfield and Golden Apple Teaching Awards. Dr. Hurd is actively involved in aortic disease research and has presented at many recent national vascular meetings.



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630 13th Street, Suite 250, Augusta, GA 30901 | Tel  706.724.2500
West Location - 63624 J Dewey Gray Cir #101, Augusta, GA 30909 | Tel  706.854.9932
Hours of operation: Monday - Friday: 7:00am to 7:00pm
Saturday: 7:00am to 4:00pm Saturday (On Call)

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