Ralph N. SINGER, Petitioner, v. DISTRICT OF COLUMBIA BOARD OF MEDICINE, Respondent. No. 91-AA-775.District of Columbia Court of Appeals.Argued May 13, 1993. Decided October 14, 1993. Page 1233 Alan Dumoff, Washington, DC, for petitioner. Mary L. Wilson, Asst. Corp. Counsel, with whom John Payton, Corp. Counsel, and Charles L. Reischel, Deputy Corp. Counsel, Washington, DC, […]