The folks from Memorial Sloan Kettering, Weill-Cornell Medical, and Rockefeller University working in the micro-micro-neighborhood around 65th Street and First Avenue feast at tasty ethnic joints and cozy trattorias.

In the micro-micro neighborhood centered around Amsterdam Avenue and 113th Street, Columbia students cram for exams at coffee shops and bistros while St. Luke’s Hospital workers grab quick bites from specialty delis.

The attorneys, lower Manhattan developers, and insurance salespeople in the micro-micro-neighborhood of West Tribeca have much more to choose from than the nearby celebrity-chef flagships — home-style international bites, in particular. But for a business lunch, they’re still best off at Bouley.

The micro-micro-neighborhood centered around 70th Street and Columbus Avenue boasts upscale haunts and casual wine bars for private-practice doctors, ABC staffers, and Apple Bank employees, while the area’s cozy cafés cater to freelancers and thirtysomething stroller-pushers.

Small, refined ethnic restaurants and sunny cafés around 14th Street and Fifth Avenue sate Union Square shoppers, Village students and profs, and lower Fifth's editors, publicists, and psychiatrists.

Around the intersection of Broadway and Houston, fashion retailers, gallery sitters, and workers from the Scholastic building can walk north and east for good, cheap NYU eats, or south and west for something with a little more Soho finesse.

Cops and city workers rub elbows with professors, bankers, and the courthouse crowd in the micro-micro-neighborhood around Mulberry and Canal Streets. In addition to fine Chinese, you'll find everything from Malaysian and Vietnamese to Italian and New American.

Horizon Media and Neuberger Berman employees dine next to private-practice doctors and lawyers in the micro-micro-neighborhood around Third Avenue and 38th Street. Located just southeast of Grand Central, upper Murray Hill offers an array of edibles ranging from hearty Italian to messy American to faux French.

The micro-micro-neighborhood centered around Broadway and Whitney Avenue in Elmhurst is one of the most diverse areas in the entire world, but Asian cuisine provides the best lunch options. The staffs of nearby Newtown High School and Elmhurst Hospital Center, as well as local real-estate agents and China Trust Bank workers, have no shortage of interesting places to nosh.

The bankers and financial planners in the tightly packed area around 47th Street and Park Avenue have two choices for good lunch: Wait on line at often less-than-stellar carts that line Park, or head one avenue east for some of the best cheap international food in the city.