People v. Callison. 08PDJ020. October 21, 2008. Attorney Regulation. The Presiding Disciplinary Judge approved a Conditional Admission of Misconduct submitted by the parties and suspended Thomas E. Callison (Attorney Registration No. 17747) from the practice of law for a period of two years, effective October 21, 2008. Respondent represented a variety of professionals facing licensure or disciplinary actions from professional boards with the Colorado State Division of Registrations. He neglected six of his clients for a period of months and thereafter failed to comply with notice requirements following his administrative suspension from the practice of law and his transfer to disability inactive status. Respondent later continued to represent a client while he was suspended from the practice of law. His misconduct constituted grounds for the imposition of discipline pursuant to C.R.C.P. 251.5 and violated Colo. RPC 1.3, 1.4(a), 1.4(b), 1.15(a), 1.16(d), 5.5(a), and 8.4(d).