Your acp will prob send you a letter directing you to contact Dr. Kendall. You can contact the alpa aeromedical doc first if you want...your choice. Dr. Kendall is completely cool with that as either his office or ALPA's aeromedical office/Doctors can coordinate getting your medical back with the FAA after you're well and ready to fly again. Both offices are very familiar with each other and work together all the time. Most folks (me included) feel a little more comfy talking to the ALPA aero folks...even though Dr. Kendall is a good guy.