A Brentwood physician who allegedly injured two cyclists last summer by slamming on his car brakes in front of them on Mandeville Canyon Road pleaded not guilty today. Prosecutor Mary Stone alleges that Christopher Thomas Thompson hit his brakes after a confrontation with cyclists who were riding down the narrow road.

The resulting impact flung one cyclist through the car’s rear window and the other to the pavement. Thompson, 59, allegedly told police during the July 4 incident that he stopped his red Infinity sedan in front of the cyclists to “teach them a lesson.” The physician complained that cyclists frequently traveled the residential street in Brentwood and that he was “tired of them,” Los Angeles police Officer Robert Rodriguez testified during a preliminary hearing last month.