Our Team

Dr. Eric E. Harrison is a distinguished cardiologist with over 37 years of experience, having personally performed more than 14,000 heart catheterizations at Tampa General Hospital. A National Merit Semi-Finalist and Founders Scholarship recipient at Vanderbilt, he went on to graduate from Rollins College and the University of Kentucky Medical School. Dr. Harrison founded the paramedic services of Tampa Fire Rescue and Hillsborough County Medical Services, earning the Key to the City of Tampa. He currently serves as National Director of Advanced Cardiac Imaging and is a pioneer in therapeutic hypothermia for cardiac arrest patients. His expertise spans 3D echocardiography, multi-slice CAT scanning, Cardiac PET/CT, Cardiac MRI, and hybrid imaging modalities.

Dr. Nghia "Nick" Ho is a UCI graduate whose medical education spans Germany, Ukraine, the Caribbean, and the USA, including St. Matthews University in Grand Cayman. His unique international background brings a global perspective to medical informatics and clinical information research. Dr. Ho is currently co-editing the groundbreaking Cardio-Orthopaedics text with Dr. Harrison, bridging the gap between cardiac care and orthopedic surgery.

Dr. Daniel Lenihan brings over 27 years of experience in Cardio-Oncology and Heart Failure. His career includes distinguished positions at MD Anderson Cancer Center, Vanderbilt University, and Washington University in St. Louis. Dr. Lenihan is the founder of the International Cardio-Oncology Society (ICOS) and currently serves as Director at St. Francis Healthcare System in Cape Girardeau, Missouri. His pioneering work in cardio-oncology has helped establish the field as a critical subspecialty.

Dr. George Shaughness is a board-certified radiologist with subspecialty training in Vascular and Interventional Radiology. He received his education at Manhattan College, SUNY, and the Uniformed Services University of the Health Sciences (USAF). His expertise in advanced imaging and interventional procedures makes him an invaluable member of the DLU team.

Cedric Wright holds a B.S. in Health Information Management from East Carolina University and brings over 20 years of experience in the Health Information field. His extensive background includes roles as HIM Director, Privacy Officer, EHR Coordinator, and Clinical Application Analyst. He serves as VP of Communications for DeBartolo Medical Foundations, ensuring clear and effective communication of the organization's mission and initiatives.

Frederick Slutsky graduated from Lehigh University in 1971 and earned his J.D. from Boston University School of Law. In 1977, he founded a mega-million-dollar insurance brokerage firm in Tampa, establishing himself as an expert witness in life, disability, and annuity contracts. Beyond his insurance expertise, he founded The Chopin Project in 2007, an artist management venture for pianists that has organized over 100 Chopin recordings.

Omer Aras is a physician–executive and radiologist specializing in oncologic imaging, preventive whole-body MRI, and advanced diagnostic technologies. He currently serves as Chief Medical Officer at Dragonfly, a multi-site imaging network focused on early disease detection and precision health through comprehensive MRI-based screening. Under his leadership, Dragonfly continues to expand nationally, with multiple locations across Texas and new sites opening in Florida, including Delray Beach.

Dr. Aras has extensive experience in advanced imaging, including PET/CT and emerging theranostic applications, and has been actively involved in integrating these technologies into clinical practice. His work focuses on bridging diagnostic radiology with precision medicine approaches to support earlier detection, improved risk stratification, and more personalized patient care.

With a strong emphasis on clinical innovation, research, and patient-centered outcomes, Dr. Aras is dedicated to advancing the role of imaging in preventive health and precision oncology.

Dennis Nelson founded MIM Software in 2001, bringing decades of biomedical engineering expertise. His career includes positions in the Department of Cardiology at the Medical College of Ohio (1975-1982) and the Department of Radiology at University Hospitals Cleveland (1982-2004). His education spans Electrical Engineering, Computer Science, and Finance, giving him a unique perspective on medical technology innovation.

Michael J. Nolan, II is an experienced transaction and bond counsel who has represented major healthcare organizations including HCA Healthcare, Eckerd Corporation, Jim Walters Corporation, and Tenet Healthcare. He served as Assistant General Counsel for Tenet Healthcare from 1997 to 1999 and has extensive bond counsel experience with the Florida Housing Finance Corporation.

Dr. Lee S. Marcus earned his M.D. from New York Medical College in 1990 and completed fellowships at both Columbia University and Yale University. Named among Castle Connolly's America's Top Doctors from 2006 to 2009, he serves as Medical Director of the NFL Alumni Association Wellness Challenge. In 2015, he founded Preventive Cardiology of New York and also serves as Medical Director of Telecardiology for Specialist Direct Inc.

Richard L. Hartmann is the co-founder of AUCTORIS, established in 1978. He specializes in values-based wealth preservation strategies for ultra-high net worth families, bringing a unique intersection of legal expertise and financial planning to the DLU advisory team.

Touria Sidqui is a cardiovascular and advanced imaging specialist with decades of experience performing thousands of CT scans. She is a well-respected community leader in CT technology, bringing technical excellence and patient care expertise to every imaging procedure.