Dr. Sellinger has been a partner at Southeastern Urological Center, now a division of Advanced Urology Institute (AUI), since 1991.
In January 2021, he became the second President of AUI, now one of the largest independent urology practices in the United States. Dr. Sellinger currently chairs the Advanced Prostate Cancer (APC) Committee and oversees seven APC clinics within AUI. Since 2015, has also served on the Large Urology Group Practice Association (LUGPA) Board of Directors, where he currently serves as Secretary.
Dr. Sellinger earned his medical degree at University of Florida School of Medicine and completed his residency at University of Florida School of Medicine.