Illinois Heart Specialists
Turn to the Illinois Heart Specialists at Decatur Memorial Hospital for your heart care. The doctors live and work in our community and are members of the DMH Medical Group - the largest medical group in Macon County.
DMH Board Certified Interventional Cardiologists

Tansel Turgut, MD
Interventional Cardiologist
Illinois Heart Specialists
Interventional Cardiology Fellowship
University of Michigan, Ann Arbor, 1999
Cardiology Fellowship
Alton Ochsner Medical Foundation, New Orleans, Louisiana, 1998
Internal Medicine Residency
State University of New York at Buffalo, 1995
Education
M.D., Hacettepe University School of Medicine, Ankara, Turkey, 1991
Certifications
American Board of Interventional Cardiology
- Cardiovascular Diseases
- Nuclear Cardiology
Memberships
American College of Cardiology, Fellow
American Heart Association
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John Waters, MD
Interventional Cardiologist
Illinois Heart Specialists
Cardiology Fellowship:
Hahnemann Hospital and MCP, Philadelphia, 2001
Cardiovascular Fellowship
University of Kentucky Medical Center, Lexington, 1983
Internal Medicine Residency
University of California, Sacramento, 1981
Education
M.D., University of Maryland School of Medicine, Baltimore, 1978
Certifications
American Board of Internal Medicine
- Cardiovascular Disease
- Interventional Cardiology
Memberships
American College of Cardiology, Fellow
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DMH Board Certified Cardiologists

Madhu Jyothinagaram, MD
Cardiologist
Illinois Heart Specialists
Cardiology Fellowship
Hahnemann Hospital and MCP, Philadelphia, 2001
Internal Medicine Residency
Hahnemann Hospital and MCP, Philadelphia, 1998
Education
M.D., Jawaharlal Nehru Medical College, Belgaum, India, 1991
Certifications
American Board of Internal Medicine - Cardiovascular Disease
Certification Board of Nuclear Cardiology
National Board of Echocardiography
International Board of Heart Rythum Examiners
Certification Board of Cardiac Computed Tomography
Memberships
American Society of Nuclear Cardiology
Fellow, American College of Cardiology
Society of Cardiovascular Computed Tomography
American Society of Echocardiography
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Nidal Aker, MD
Cardiologist
Illinois Heart Specialists
Cardiology Fellowship
University of Illinois, Chicago, 2001
Internal Medicine Residency
University of Illinois, Chicago, 1998
Education
M.D., Jordan University of Science & Technology, Irbid, Jordan, 1992
Certifications
American Board of Internal Medicine-Cardiolvascular Disease
Memberships
American College of Cardiology |
DMH Board Certified Cardiothoracic Surgeon

Marvin Derrick, MD
Cardiothoracic Surgeon
Illinois Heart Specialists
Thoracic Surgery Residency
University of California-San Diego, 1989
General Surgery Residency
University of California-Davis, Sacramento, California, 1986
Education
M.D., University of California, Los Angeles, 1981
Military Service
United States Air Force Academy Cadet, 1973-1975
Certifications
American Board of Surgery, Diplomate
American Board of Thoracic Surgery, Diplomate
Memberships
American College of Surgeons, Fellow
American College of Chest Physicians, Fellow
Society of Thoracic Surgeons
International Society of Minimally Invasive Cardiac Surgery
American College of Phlebology
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