D.C. Code 7-401(d)
Liability: Instructions Given By a Licensed Physician
A licensed physician who, in good faith, gives instructions either directly or via telecommunication to an EMT or paramedic who is providing care at the scene of an emergency or accident will not be held legally responsible for acting or failing to act. They can be held legally responsible if acting with extreme carelessness.
Limitation on liability for medical care or assistance in emergency situations
(d) A licensed physician who in good faith gives emergency medical instructions either directly or via telecommunication to a certified emergency medical technician/paramedic or emergency medical technician/intermediate paramedic for the purpose of providing advanced emergency medical care to an injured person at the scene of an accident or other emergency or in transit from the scene of an accident or emergency to a hospital shall not be liable in civil damages for any act or omission not constituting gross negligence in the course of giving such emergency medical instructions.