
Overview
I am an adult cardiac surgeon specializing in heart transplantation and mechanical circulatory support. I perform general cardiac surgery operations, including coronary artery bypass grafting, valve repair, and replacement for various valvular pathologies. A significant portion of my practice is dedicated to the surgical management of patients with advanced heart failure. This includes heart transplantation, left ventricular assist devices (LVAD), and various forms of temporary mechanical circulatory support, such as extracorporeal membrane oxygenation (ECMO). I am proud to be a part of one of the largest volume and highest quality advanced heart failure programs in the world. Duke Health is consistently a national leader in heart transplant volume. We maintain high-quality outcomes and practice at the leading edge of the field. It is a remarkable experience to deliver these innovative therapies to our critically ill heart failure patients. These therapies are not only lifesaving but help restore our patients to the high quality of life they hope to lead.
Dr. Keenan is rated as an Experienced provider by MediFind in the treatment of Thoracic Aortic Aneurysm. His top areas of expertise are Thoracic Aortic Aneurysm, Aortic Dissection, Endocarditis, Heart Transplant, and Patent Foramen Ovale Repair.
His clinical research consists of co-authoring 53 peer reviewed articles. MediFind looks at clinical research from the past 15 years. In particular, he has co-authored 8 articles in the study of Thoracic Aortic Aneurysm.
Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- PPO
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- PPO
- HMO
- INDEMNITY
- POS
- PPO
- OTHER MANAGED MEDICAID
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE PART D
- EPO
- HMO
- POS
- PPO
Locations
40 Duke Medicine Cir, Durham, NC 27710
Clinical Research
Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.
University Of North Carolina At Chapel Hill
Federico Parodi is a Vascular Surgeon and a General Surgeon in Chapel Hill, North Carolina. Dr. Parodi is rated as a Distinguished provider by MediFind in the treatment of Thoracic Aortic Aneurysm. His top areas of expertise are Thoracic Aortic Aneurysm, Abdominal Aortic Aneurysm (AAA), Mesenteric Artery Ischemia, Peptic Ulcer, and Carotid Artery Surgery. Dr. Parodi is currently accepting new patients.
Rex Hospital Inc
Martyn Knowles is a General Surgeon and a Vascular Surgeon in Garner, North Carolina. Dr. Knowles is rated as a Distinguished provider by MediFind in the treatment of Thoracic Aortic Aneurysm. His top areas of expertise are Thoracic Aortic Aneurysm, Abdominal Aortic Aneurysm (AAA), Deep Vein Thrombosis, Carotid Artery Surgery, and Angioplasty. Dr. Knowles is currently accepting new patients.
Duke Cardiothoracic Surgery - Clinic 2F/2G
I specialize in thoracic aortic disease and valvular heart disease. My career focus has been taking care of complex and high-risk cardiac surgery patients. I gain tremendous satisfaction from my interactions with my patients and value the long-term relationships I have with many of them. In addition, I enjoy teaching the next generation of surgeons and improving the field through research. In my spare time, I enjoy spending time with family and traveling. Dr. Chen is rated as a Distinguished provider by MediFind in the treatment of Thoracic Aortic Aneurysm. His top areas of expertise are Thoracic Aortic Aneurysm, Aortic Dissection, Aortic Regurgitation, Heart Valve Repair, and Aortic Valve Replacement.
Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
- Advanced
- Heart TransplantDr. Keenan isAdvanced. Learn about Heart Transplant.
- Experienced
- Aortic DissectionDr. Keenan isExperienced. Learn about Aortic Dissection.
- Aortic Valve ReplacementDr. Keenan isExperienced. Learn about Aortic Valve Replacement.
- Cardiogenic ShockDr. Keenan isExperienced. Learn about Cardiogenic Shock.
- Cystic Medial Necrosis of AortaDr. Keenan isExperienced. Learn about Cystic Medial Necrosis of Aorta.
- EndocarditisDr. Keenan isExperienced. Learn about Endocarditis.
- EndoscopyDr. Keenan isExperienced. Learn about Endoscopy.

