"To broaden access to innovative wellness treatments through personalized, evidence-based virtual care that empowers individuals to reach their peak health and vitality."
To become the premier virtual health provider, transforming lives with accessible, cutting-edge wellness solutions.
Personalized care delivered online, guided by the expertise of board-certified physicians.
Founder & Chief Medical Officer
Board-Certified Bariatric Surgeon
Dr. Tiesenga is an award-winning board-certified bariatric surgeon passionate about helping individuals achieve healthier lifestyles. His success stems from a desire to innovate breakthrough procedures and find better, more efficient practices that make treatment easier for patients.
With over 25 years of experience and pioneering work in minimally invasive surgery, Dr. Tiesenga founded NEXI to extend his innovative approach to wellness through accessible telemedicine solutions.
Doctorate of Medicine (M.D.) • 1987-1991
General Surgery Residency • 1991-1996
B.S. Biology/Chemistry • 1983-1984
Advanced treatments delivered through innovative telemedicine
Advanced weight management solutions including Semaglutide and Tirzepatide for sustainable weight loss.
Cutting-edge peptide treatments for anti-aging, recovery, and overall wellness optimization.
Comprehensive HRT solutions for women to restore hormonal balance and vitality.
Personalized TRT programs for men to optimize energy, strength, and overall well-being.
The values that guide every aspect of our care
Every treatment plan is personalized to meet individual health goals and needs.
Led by board-certified physicians and evidence-based treatments ensure the highest quality care.
Pioneering telemedicine solutions that make advanced wellness treatments accessible to all.
Breaking down barriers to quality healthcare through convenient telemedicine or in-person visit.
Decades of innovation leading to NEXI
Dr. Tiesenga begins private practice, establishing foundation of surgical excellence.
Becomes Director of Minimally Invasive and Bariatric Surgery at multiple institutions.
Receives first General Surgery Robotic Epicenter Designation in Illinois.
Serves as President of Illinois Association of Bariatric Surgeons.
Launches innovative telemedicine platform to democratize access to wellness treatments.
Trusted partnerships with leading medical institutions
Experience the NEXI difference - personalized care backed by decades of medical excellence, delivered through innovative telemedicine solutions.
