Dr. Linda S. Efferen has been promoted to clinical professor of medicine, Hofstra North Shore-LIJ School of Medicine at Hofstra University, in Hempstead. The Dix Hills resident was senior vice president and chief medical officer at South Nassau Communities Hospital in Oceanside.
Kirschenbaum & Kirschenbaum in Garden City has named two new associates.
Kate Maguire, of Long Beach, joins the firm's commercial litigation department. She was an associate at Rivkin Radler in its complex tort litigation group.
Nancy Seifer has been named sales representative at MapToons, a Massapequa marketing company that serves Chambers of Commerce. The Bellmore resident was senior partner and associate director at Ogilvy & Mather in Manhattan.
To be included in People on the Move, send information and color photos about job moves, promotions and other work-world triumphs by fax to 631-843-2065, by email to firstname.lastname@example.org, or by mail to People on the Move, 235 Pinelawn Rd., Melville, NY 11747-4250.