Confirm the exact product or service National contact — confirm product and location
Mailing address
Not researched for this route
Insurance and reimbursement navigation, including referrals to assistance where applicable. Some medicines publish a different dedicated program number.
Confirm the exact product or service National contact — confirm product and location
Mailing addressMerck & Co., Inc.
Vaccine Customer Center
351 N. Sumneytown Pike
UG2AB-20
North Wales, PA 19454
Mail to the Vaccine Customer Center
For practices ordering Merck vaccines directly (merckvaccines.com ordering): orders, order changes/cancellations, backorder and supply-status questions. The contact page also offers a registered-user callback/web-conference service with a dedicated Vaccine Account Representative (8:00 AM to 6:30 PM ET, Monday to Friday). Canada callers use the Merck Canada Order Desk. Not for patient assistance.
8:00 AM to 7:00 PM ET, Monday to Friday (contact page)
Product, plan and location
Confirm the exact product or service National contact — confirm product and location
Mailing addressMerck & Co., Inc.
Order Management Center
351 N. Sumneytown Pike
UG-4C24
North Wales, PA 19454
Mail to the Order Management Center
Direct-purchase ordering questions for Merck pharmaceuticals and specialty injectables (not vaccines), including backordered pharmaceutical products and returns questions. The ordering help page lists hours of 8 AM to 6 PM ET for returns questions; the contact page lists 8:00 AM to 7:00 PM ET.
Medical information requests; adverse experience reporting
Published hours
8:00 AM to 6:30 PM ET, Monday to Friday
Product, plan and location
Confirm the exact product or service National contact — confirm product and location
Mailing address
Not researched for this route
Telephone requests for medical information about Merck products (online submission also available). The same page lists 800.NSC.MERCK (800.672.6372) for reporting an adverse experience directly to Merck. Note: merck.com's contact page separately lists 1-800-444-2080 for the Merck National Service Center (product/services information and adverse-event or product-quality reporting); both are official Merck pages.
Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.
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Practice NPI and tax ID, kept in your secure workspace
Exact product name and member ID card
A one-sentence request and your office callback number
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