34 If you want to ask questions about approved vaccines, Pfizer's hotline is 800-666-7248... posted 3 years ago by BigMuddyMama 3 years ago by BigMuddyMama +34 / -0 ...and this number ties to Pleasant Prairie, WI, 19m SW of Rancine, WI. That is all. 0 comments share 0 comments share save hide report block hide replies