Problem and Pathological Gambling are serious issues that may be difficult to identify in clients because of a lack of overt symptoms and the frequent presence of feelings of shame related to the problem. It is therefore imperative that clinicians utilize effective screening procedures and use accurate diagnostic resources when screening for problem and/or pathological gambling. This study sought to understand how mental health professionals screen for and assess pathological gambling/gambling disorder. Utilizing a general qualitative research design, semi-structured interviews with 10 licensed mental health professionals were analyzed and the results grouped into 7 themes. These themes represented important factors in the process of screening for and assessment pathological gambling/gambling disorder as identified by participants, which included 1) accounting for client shame and denial, 2) assessing for client motivation or stage of change, 3) conceptualizing comorbid disorders, 4) changes from the DSM-IV to the DSM-V, 5) comparing and contrasting pathological gambling/gambling disorder and other addictions, 6) using assessments in a nuanced way, and 7) the impact of relationship discord.