Medical emergency at Mercy Health lobby in Chesterfield Heard on: St. Louis County Fire and EMS - South 00:16 00:00 Twenty-two sixty-seven, medical facility EMS call, Mercy Health, 1722 Clarkson Road, unit lobby, cross street is Dierbergs Marketplace. Transcript This transcript is auto-generated from live dispatch audio and may be incomplete or inaccurate. It is not an official report and may change. 00:00 Twenty-two sixty-seven, medical facility EMS call, Mercy Health, 1722 Clarkson Road, unit lobby, cross street is Dierbergs Marketplace. 00:12 Twenty-two sixty-seven, respond on South Main. 2026-10-16 20:47 UTC Medical Emergency Clarkson Rd, Chesterfield, MO 63017 View on map