Dr. Allan Stewart is a world-renowned cardiothoracic surgeon who has revolutionized the field of heart health, ugenheart.com, through his expertise in minimally invasive cardiac procedures and complex aortic surgery. Known for his precision, innovation, and leadership, Dr. Stewart has built a distinguished career performing life-saving surgeries and pioneering advancements in cardiovascular care.

Dr. Stewart’s career has placed him at the forefront of some of the most high-profile and complex cardiac surgeries in the world. He successfully performed coronary bypass surgery on former President Bill Clinton, and his surgical expertise has been sought after by legendary broadcast journalist Barbara Walters, as well as multiple professional athletes, rockstars, and politicians. These high-stakes procedures, performed on some of the most influential figures in media, sports, and politics, further cemented Dr. Stewart’s reputation as one of the world’s top cardiac surgeons.

Dr. Stewart’s medical journey began with an internship in General Surgery at the Hospital of the University of Pennsylvania, followed by seven years of specialized training, including two years dedicated to human gene therapy. He completed his Cardiac Surgery specialization at Columbia University Medical Center, where he later served as an Assistant Professor from 2005 to 2013. During this time, he became a global leader in complex aortic surgery, heart transplants, and ventricular assist device procedures.

In 2013, Dr. Stewart was recruited to lead the Center for Aortic Disease at Mount Sinai Hospital in New York. As an Associate Professor of Cardiovascular Surgery and Medical Director for Mount Sinai International, he expanded global cardiac programs and performed high-profile surgeries worldwide. In 2018, he transitioned to Miami as Chief of Cardiac Surgery, where he developed a premier cardiovascular center serving patients across Latin America and the Caribbean.

 

 

Dr. Stewart’s expertise has been widely recognized, including being featured multiple times on The Dr. Oz Show for his cutting-edge work in heart surgery and cardiovascular advancements. Dr. Mehmet Oz, recently nominated by President Donald Trump to lead the Centers for Medicare & Medicaid Services (CMS), highlighted Dr. Stewart’s influence in the medical field.

Beyond his surgical accomplishments, Dr. Stewart is a prolific researcher with over 75 manuscripts and book chapters to his name. He has been a principal investigator in major clinical trials and continues to push the boundaries of cardiac care by integrating advanced technologies, such as AI, into medicine. A graduate of the Harvard Medical School Surgical Leadership Program and an alumnus of MIT’s AI in Healthcare course, Dr. Stewart remains at the forefront of innovation in heart health.

With a career spanning five continents and 21 countries, Dr. Stewart has received numerous accolades, including recognition in Castle Connolly’s Best Doctors in America, New York Magazine’s Best Thoracic Surgeons, and the Most Honored Doctors list for 14 consecutive years. He is a member of prestigious organizations such as the American Association of Thoracic Surgeons, the Society of Thoracic Surgeons, the American College of Surgeons, and the American College of Cardiology.

 

 

Outside the operating room, Dr. Stewart is a black belt in Okinawan karate, an Ironman triathlete, and the host of the Life by Design podcast, where he shares insights on heart health and wellness. His expertise has been featured in the documentary NY MED and on platforms such as Fox News, Good Day NY, and the Today Show.

Dr. Stewart is married to celebrity chef and Iron Chef judge Donatella Arpaia. Together, they advocate for heart-healthy living by combining medical science with culinary expertise, promoting the critical connection between diet and cardiovascular wellness.

Dr. Allan Stewart’s career is defined by innovation, excellence, and a relentless commitment to advancing heart health, making him a trailblazer in the field of cardiothoracic surgery worldwide.

 

Ů GEN's Lead Pharmacist

Lilanie Joubert

 

Lilanie Joubert is a dedicated and dynamic Lead Pharmacist with a strong background in both retail and clinical pharmacy. She earned her Bachelor of Pharmacy (B.Pharm) degree from North West University in 2017, followed by a rigorous internship and community service that solidified her commitment to personalized, patient-centered care.

Her professional journey began as the Responsible Pharmacist at one of South Africa’s leading pharmacies, where she led operations, ensured regulatory compliance, and built trusted relationships with patients over 2.5 years. Her passion for accessible, science-backed healthcare led her to pursue locum work, expanding her expertise across diverse healthcare settings. During this period, she also completed the PIMART (Pharmacist-Initiated Management of Antiretroviral Therapy) course, equipping her to initiate and manage HIV prevention and treatment—enhancing access to essential care.

Bridging Science & Natural Medicine

With years of hands-on experience in retail and clinical pharmacy, Lilanie developed a holistic approach to health, recognizing the powerful synergy between pharmaceuticals and natural medicine. She believes in preventative, personalized healthcare, advocating for lifestyle and nutritional interventions alongside conventional treatments to help people optimize longevity and well-being. Her expertise enables her to guide patients in seamlessly integrating targeted supplementation, natural remedies, and evidence-based pharmaceutical care for a comprehensive, results-driven health strategy.

 

 

Leadership & Innovation in Pharmacy

As Lead Pharmacist at U Gen, Lilanie plays a pivotal role in team management, regulatory compliance, and patient-first service delivery. Her leadership is defined by strategic thinking, adaptability, and a passion for cutting-edge wellness solutions. She thrives in fast-paced, evolving healthcare environments, solving complex challenges and implementing innovative, science-backed strategies to enhance patient outcomes.

Beyond the Pharmacy

Lilanie’s passion for health and wellness extends beyond her professional career. She is an avid netball player, fitness enthusiast, and outdoor adventurer, embodying the active lifestyle she encourages in her patients. She thrives in social environments, fostering meaningful connections with both patients and colleagues. As a strong advocate for holistic health, she is committed to empowering individuals to take control of their well-being—going beyond symptom treatment to embrace sustainable, health-conscious habits.

Her dedication, patient-first approach, and innovative mindset continue to set her apart as a leading force in modern, integrative pharmacy.