Contact us U.S. Merck corporate headquarters Our corporate headquarters is located at: 126 East Lincoln AvenueP.O. Box 2000Rahway, NJ 07065 USA To reach a Merck employee, please call: 1-908-740-4000Monday – Friday, 8:30 am – 5:30 pm ET Products & services and adverse event reporting For information about Merck’s products and services including the reporting of … Continue reading Contact us