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AdventHealth
Adventist Health System Sunbelt Healthcare Corporation (doing business as AdventHealth, and formerly doing business as Adventist Health System) is an American hospital network headquartered in Altamonte Springs, Florida, that operates health care facilities across multiple states in the United States. It is the largest Protestant nonprofit organization in the country, and is affiliated with the Seventh-day Adventist Church.
AdventHealth is a founding member of Coalition for Health AI (CHAI) and the Trustworthy and Responsible AI Network (TRAIN). In 2021, it ranked as the second-largest hospital network in Florida, and by February 2023, it was listed as the fifteenth-largest hospital system nationwide. As of December 2025, AdventHealth operates 57 hospitals across nine states, spanning 55 campuses. While Becker's Hospital Review only recognizes 55 hospitals, by not counting AdventHealth for Children and AdventHealth for Women.
On January 2, 2019, the majority of the medical facilities were rebranded to AdventHealth. The rebranding excluded facilities in Colorado, Illinois and Texas that were being operated through joint ventures.
In March 2022, the hospital network became the first to receive the Emerald Award from the Leapfrog Group, recognizing achievements in health care quality and safety. On September 1, 2022, the organization announced the development of a new rapid diagnostic test to quickly detect Naegleria fowleri, commonly referred to as a brain-eating amoebas. In November 2024, AdventHealth was ranked first on Gartner's Healthcare Supply Chain Top 25 list, marking its first time achieving the top position.
On February 15, 1973, Southern Adventist Health and Hospital Systems, Inc. was founded at Florida Hospital Orlando. The organization unified nine hospitals across the Southern Union Conference, bringing together facilities that had operated independently for decades. The system later adopted the name Adventist Health System Sunbelt Healthcare Corporation. On December 26, 1979, the system applied for the trade name Adventist Health System.
In late May 1999, Adventist Health System withdrew from negotiations to purchase three hospitals in the Tampa Bay area from Tenet Healthcare. The decision followed disagreement over valuation, with Tenet reportedly seeking between $200 to $250 million for the facilities.
Mardian J. Blair served as president and chief executive officer of Adventist Health System from 1984 until his retirement on January 1, 2000. He was succeeded by Thomas L. Werner, who had been selected for the role in August 1999.
In early November 2005, Thomas L. Werner announced his retirement as president and CEO of Adventist Health System. He was succeeded by Donald L. Jernigan, who was appointed to the position in late February 2006 and officially took office on March 1.
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AdventHealth
Adventist Health System Sunbelt Healthcare Corporation (doing business as AdventHealth, and formerly doing business as Adventist Health System) is an American hospital network headquartered in Altamonte Springs, Florida, that operates health care facilities across multiple states in the United States. It is the largest Protestant nonprofit organization in the country, and is affiliated with the Seventh-day Adventist Church.
AdventHealth is a founding member of Coalition for Health AI (CHAI) and the Trustworthy and Responsible AI Network (TRAIN). In 2021, it ranked as the second-largest hospital network in Florida, and by February 2023, it was listed as the fifteenth-largest hospital system nationwide. As of December 2025, AdventHealth operates 57 hospitals across nine states, spanning 55 campuses. While Becker's Hospital Review only recognizes 55 hospitals, by not counting AdventHealth for Children and AdventHealth for Women.
On January 2, 2019, the majority of the medical facilities were rebranded to AdventHealth. The rebranding excluded facilities in Colorado, Illinois and Texas that were being operated through joint ventures.
In March 2022, the hospital network became the first to receive the Emerald Award from the Leapfrog Group, recognizing achievements in health care quality and safety. On September 1, 2022, the organization announced the development of a new rapid diagnostic test to quickly detect Naegleria fowleri, commonly referred to as a brain-eating amoebas. In November 2024, AdventHealth was ranked first on Gartner's Healthcare Supply Chain Top 25 list, marking its first time achieving the top position.
On February 15, 1973, Southern Adventist Health and Hospital Systems, Inc. was founded at Florida Hospital Orlando. The organization unified nine hospitals across the Southern Union Conference, bringing together facilities that had operated independently for decades. The system later adopted the name Adventist Health System Sunbelt Healthcare Corporation. On December 26, 1979, the system applied for the trade name Adventist Health System.
In late May 1999, Adventist Health System withdrew from negotiations to purchase three hospitals in the Tampa Bay area from Tenet Healthcare. The decision followed disagreement over valuation, with Tenet reportedly seeking between $200 to $250 million for the facilities.
Mardian J. Blair served as president and chief executive officer of Adventist Health System from 1984 until his retirement on January 1, 2000. He was succeeded by Thomas L. Werner, who had been selected for the role in August 1999.
In early November 2005, Thomas L. Werner announced his retirement as president and CEO of Adventist Health System. He was succeeded by Donald L. Jernigan, who was appointed to the position in late February 2006 and officially took office on March 1.