Gentiva Health Services is a provider of home health care, hospice and related services in the United States. Gentiva is based in Atlanta, Georgia. It is a Fortune 1000 company with over $1.7 billion in annual revenue. Gentiva is a member of the S&P 600 index, developed by S&P Global Ratings, featuring small capitalization U.S.-based stocks. The company offers a range of services, including nursing, physical, occupational, and speech-language therapy, cardiac and pulmonary care, disease and pain management, and other health and medical services. Gentiva provides health services to over half a million patients annually through over 420 U.S. locations in 40 states. Its companies include Donelson, Emerald Coast, Gilbert's, Healthfield Group, Hospice of Charleston, Lazarus House, Tar Heel, Total Care, and Wiregrass. History Gentiva Health Services was founded on August 6, 1999 when Olsten Corporation split off its healthcare assets to form an independent, public company. Olsten Corporation was founded in 1946 by William Olsten. The company grew through the 1950s, 1960s, and 1970s. In 1971, it began focusing on its health care division under the name Olsten Healthcare. In the 1990s, its health care division began acquiring other companies. The division acquired Upjohn Health Services, and after an acquisition of Lifetime Corporation, which included Office Angels, it became the largest provider of home healthcare services, operating as Olsten Kimberly QualityCare. In 1995 Olsten Kimberly QualityCare launched CareCentrix, and a year later, the company entered the home infusion business by acquiring Quantum Health Resources. That same year it acquired NeuroCare Rehab Without Walls, and became the sole national provider for Cigna. It also acquired Nurses House Call. In 1997, it changed its name to Olsten Health Services. In 1999, Olsten Corporation split its healthcare division into an independent, publicly traded company, named Gentiva Health Services. In its first three years of independent operation, Gentiva launched its Gentiva Orthopedics, Gentiva Cardiopulmonary, and Safe Strides programs, and it also sold its pharmaceutical services division to Accredo Health Inc. for $415 million in cash and stock and its health care staffing unit to InteliStaf Holdings Inc. and The Carlyle Group. In 2008, it launched its Neurorehabilitation and Senior Health programs. In 2009, Gentiva moved its headquarters from Melville, New York, to Atlanta, Georgia. By 2010, it had acquired First HomeCare of Houston, Heritage Home Care Services, The Healthfield Group, Gilbert's Home Health and Hospice, Physicians Home Health Care, and Hospice of Charleston.