AtlantiCare Regional Medical Center - City Campus 1925 Pacific Avenue Atlantic City, NJ 08401 609-345-4000. AtlantiCare Regional Medical Center - Mainland Campus Jimmie Leeds Road Pomona, NJ 08240 609-652-1000. AtlantiCare Corporate Offices 2500 English Creek Ave. Egg Harbor Township, NJ 08234 609-407-2300.