Adam Robison | Buy at photos.djournal.comJoby Collins had his own private practice before deciding to open an Aspen Dental office in Tupelo. By Dennis Seid Daily Journal TUPELO – After 19 years in private practice, Joby Collins has taken a new route with his career. Collins is celebrating the opening of his Aspen Dental office today at the Tupelo Crossroads development on North Gloster Street. “A lot has changed in the field of dentistry, and for me, it came down to an understanding of providing a quality of care for patients in a comprehensive fashion,” he said.