Brian Caswell-Monack, DO Top Doctor 20251 John J Williams Hwy Lewes, Delaware, 19958 Phone: 302-644-6860 Company Name: Mid-Atlantic Family Practice Doctor Category: Family Medicine Profile Let this business know you found them on Delaware Today's Online Directories. Locations Lewes 20251 John J Williams Hwy Lewes, Delaware 19958 Claim/Edit Listing