Mount Sinai Health System is planning to consolidate three Huntington locations in 80,000 square feet of a renovated facility in Greenlawn, officials said.

The New York City-based health system hopes to be in its new home, at 5 Cuba Hill Rd., by early next year, said Alicia Gresham, vice president of network operations at Mount Sinai.

The three offices Mount Sinai is vacating had combined space of about 60,000 square feet, Gresham said.

“The convenience matters,” Gresham said. “We will have extended hours, same-day appointments, lab work, X-rays, testing, all in one place.”

Mount Sinai will place about 60 physicians and 250 additional employees in Greenlawn, Gresham said, adding that it will offer primary and pediatric care, surgical services, neurology and about 25 other specialties there.

The new location is owned by Bronx-based Simone Development, which purchased the 18-acre property from defense and aerospace company BAE Systems last year. The property has three buildings, two of which are being leased back to BAE Systems, said Guy Leibler, president of the health care development unit of Simone.

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Stony Brook Medicine is also pushing what it called a “one-stop shopping” medical experience. Stony Brook last week opened its Advanced Specialty Care office in 120,000 square feet of space at the former Forest Labs headquarters on Commack Road in Commack.

Much like Mount Sinai, Stony Brook is putting about 30 medical specialties under one roof, including primary care, pediatrics, urology, surgery and radiology.

The new Mount Sinai facility will be 2 miles from NYU Langone Huntington Medical Group, another multi-specialty facility.

Demand for health care continues to climb in the area. Long Island had 224,400 health care and social assistance jobs as of December, a 4.2 percent year-over-year increase, according to the state labor department.