PMA Pottstown COVID-19 Response Saturday Hours Cancelled Oct. 24, 2020 ONLY PMA Pottstown will be temporarily closed October 22 & 23 2020 COVID-19 PMA Pottstown Flu Shot Clinic - Saturday October 3 John F. Freehafer, MD has decided to retire as of October 1, 2020 PMA Phoenixville MOB II Limited Contact Flu Shot Clinic - By Appointment Only!.