Three employees have been promoted at Henry Schein, the Melville health care products and services distributor.

Sergio Tejeda of Port Washington, left, has been promoted to director of regulatory operations and compliance from regulatory affairs manager.

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Tracey Hammond, center, has been promoted to director of North American business events from event manager for the medical and animal health divisions. She lives in Oakdale.

And Anthony Providenti, right, has been named vice president, planning and development for the company's U.S. medical group. He was vice president, business development in the corporate business development area and lives in New York City.

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