Dr. Barry F. Mulligan

On a broad arterial road just east of the Nissequogue River bridge, a small wedge of medical offices sits sandwiched between auto shops and 1960s ranch homes. Dr. Barry F. Mulligan shares the same brick storefront as a couple of fellow practitioners; only the numbers on the door change. The dentist’s entrance is unobtrusive—no marquee, no oversized sign—just etched glass and a brass handle that never seems locked. The address, 25 Indian Head Road, feels like the hinge between farmland past and strip-mall future.

Inside the glass pane counts of endodontics, hygiene, and routine check-ups rotate on a discreet display near the sign-in window. You’ll find them tilting toward one-hour crowns rather than the two-visit route, and the sterilization bay is narrow enough to overhear the steady beep of the autoclave. Fluoride varnish keeps kids calm for seven minutes; whitening trays get fitted during the same appointment if the schedule permits. Adults drift in for implant consultations without tripping over crowded brochures, and the receptionist will hand you a warm glass of water while they call the prosthodontist two doors down.

After the second x-ray of the morning, the hygienist slides the lead apron off your shoulders; billing wraps itself up inside the same five-minute slot. If you need to bring in a shattered bridge from your camping trip, they’ll craft a provisional in-house so you’re not touring Main Street in a lopsided grin. Graft material for a sinus lift lives in the chilled drawer three cabinets up from the glass-ionomer, all alphabetical and catalogued in sharpie.

The clinic keeps a tight address file: call (631) 292-2001 to arrange the next slot—morning or afternoon, two months out if you’re lucky. Retrieve the exact walking route from the maps listing before you wander past the river again. The expressway sweepers whistle through empty lots after dusk, which is when the dental office finally exhales.