She is the dental director for several nursing care facilities, educating staff as well as providing care to nursing home residents. She also makes house calls in and around the Chicagoland area. Dr. Poskozim has been in private practice for 25 years, practicing integrative health general dentistry at her office on the northwest side of Chicago, and has been performing dental procedures on the home-bound for over 16 years. In 2017 she earned her Dentistry in Long-Term Care Certificate from the University of the Pacific Dental School, her Fellowship with the Special Care Dental Association Geriatric Council in 2018, and is certified as a Dementia Practitioner as of 2021.

Dr. Joy is a 1990 graduate of Marquette University, and New York University College of Dentistry in 1994. She completed a GPR from Woodhull Medical Center in 2000 where she was awarded Resident of the Year.