Behind the Team: Dr. Nicholas DeBellis, Molloy University’s Trusted Team Coach
Located in the heart of Rockville Centre, Dr. Nicholas DeBellis supports student-athletes at Molloy University as the official team physician. Beyond Molloy University, he is also the trusted source for athletes and weekend warriors from surrounding communities across Long Island. Towns like Oceanside, Lynbrook, Baldwin, East Rockaway, and Freeport are just minutes away—making South Island Orthopedics, Dr. Debellis’ orthopedic and sports medicine practice, a central care hub for student-athletes across Nassau County. Dr. DeBellis’ commitment to injury prevention, care, and performance support extends to athletes from these neighboring areas who train, compete, and thrive under his guidance.
Combining Medical Insight With Athletic Passion
Sports team, people and coaching for field strategy, checklist and training progress, teamwork and planning game. Leadership man talking to sports men or athlete group for workout or competition goals.
Dr. DeBellis brings more than just clinical knowledge to the sidelines. His background in sports medicine allows him to diagnose, treat, and prevent injuries, while his passion for athletics helps him connect with student-athletes on a personal level.
As team coach, Dr. DeBellis supports athletes before, during, and after the season—helping them build smart routines, recover from setbacks, and stay game-day ready.
“It’s about more than just physical health, it’s about building habits that serve athletes now and long after their final whistle.” says Dr. DeBellis.
A Presence On and Off the Field
Whether it’s monitoring a sprained ankle during practice or guiding a return-to-play protocol, Dr. DeBellis is a consistent and familiar face. His involvement ensures that Molloy University athletes receive timely care and are never left navigating recovery alone.
Key contributions include:
- On-field evaluations during games and practices
- One-on-one athlete consultations
- Preventative programming and injury education
- Collaboration with athletic trainers and coaches
College basketball player with sports injury being examined by Dr. Debellis.
Supporting Athletes Beyond the Sidelines
Dr. DeBellis is committed to making sure every athlete at Molloy University has access to elite sports medicine care. Learn more about why athletes choose us!
Empowering the Next Generation of Athletes
Dr. DeBellis believes that young athletes benefit most when healthcare and coaching work hand in hand. His coaching is grounded in compassion, evidence-based care, and a deep respect for each athlete’s goals.
Through mentorship, education, and a strong on-site presence, Dr. DeBellis is helping shape a more resilient Molloy University athletic community.
Learn more About Dr. DeBellis
Dr. Nicholas DeBellis is the Medical Director and President of South Island Orthopedics in Cedarhurst, NY. A board-certified orthopedic surgeon with fellowship training in sports medicine, Dr. DeBellis completed advanced clinical training at the University of Southern California and the Icahn School of Medicine at Mount Sinai, He focuses on treating arthritis, joint injuries, and trauma-related conditions, using minimally invasive techniques to help patients regain mobility and improve quality of life. In addition to his clinical work, Dr. DeBellis contributes to orthopedic research, with a focus on enhancing recovery and reducing reliance on opioids after surgery.
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Posted in: Sports Medicine