Mercy Pharmacy - Dierbergs Deer Creek Crossing
Pharmacy2979 Highway K, O Fallon, MO
Shopping
Independent pharmacies in O'fallon, MO
4 independent, locally-owned pharmacies are listed in O'fallon, Missouri on CheckThisBiz. National chains and franchises are not included. Ranked by how much we could independently verify (listing sources, phone, website and owner verification), the top pharmacies are Mercy Pharmacy - Dierbergs Deer Creek Crossing, Powers Compounding Pharmacy and SSM Health Prescription Center.
How we rank: email-verified customer reviews on CheckThisBiz first, then independent checks (listing sources, phone, website and domain, owner verification). Paid placement never changes this ranking. Our methods · Sources · Updated November 10, 2026
View on map4 pharmacies in O'fallon · Clear
Own one of these? Be the first pharmacy people see in O'fallon.Get the top spot →Own one? Run a free health check on your business.
Powers Compounding Pharmacy
Pharmacy2315 Technology Dr, O'fallon, MO
SSM Health Prescription Center
Pharmacy301 Caledonia Pkwy Ste 110, O'fallon, MO
Drug Package
Pharmacy901 Drug Package Ln, O'fallon, MO
Want your business at the top of this page?
Be the first of the pharmacies in O'fallon, MO that customers see. Get the top spot · or claim your listing to get the verified badge.