Adventist Health System Sunbelt Healthcare Corporation (doing business as AdventHealth, and formerly as Adventist Health System initialed as AHS) is an American hospital network. It is headquartered in Altamonte Springs, Florida. It operates healthcare facilities across multiple 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).
The hospital network is the Official Health Care Provider for Florida Citrus Sports, Legoland Florida Resort, Orlando Magic, Orlando Solar Bears, Orlando Squeeze and Orlando Valkyries; the Official Health Care Partner for Daytona International Speedway; the Official Health and Wellness Partner for the Tampa Bay Lightning; the Official Medical Provider for runDisney and also Osceola Magic
. Other partners of AdventHealth are Dr. Phillips Center for the Performing Arts, Track Shack, USTA National Campus and Walt Disney World.
In 2021, it was the second-largest hospital network in Florida. In February 2026, it was listed as the eleventh-largest hospital system nationwide. As of August 2026, AdventHealth operated 57 hospitals across nine states, spanning 55 campuses. Becker's Hospital Review and Healthcare Dive count only 55 hospitals as they exclude AdventHealth for Children and AdventHealth for Women.
On March 19, 2015, Adventist Health System settled a lawsuit that accused it of violating the False Claims Act for $5.4 million, for unsupervised radiation precedures.
On September 21, the hospital network settled multiple lawsuits for a total of $118.7 million, that accused it of violating the Stark Law and False Claims Act. It was the largest settlement ever paid by a hospital network for violating the Stark Law.
On February 19, 2016, the hospital network settled a lawsuit that accused it of violating the False Claims Act for $2.09 million, after one of its hospitals used leftover chemotherapy drugs.
On January 2, 2019, the majority of the medical facilities were rebranded to AdventHealth. The rebranding excluded facilities in Colorado, Illinois, and Texas 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 healthcare quality and safety.
In April, AdventHealth and Ascension dissolved their joint venture AMITA Health.
On September 1, the organization announced a rapid diagnostic test to detect Naegleria fowleri, commonly referred to as brain-eating amoebas.
In August 2023, AdventHealth and CommonSpirit Health dissolved their joint venture Centura Health.
In November 2024, AdventHealth ranked first on Gartner's Healthcare Supply Chain Top 25 list, its first time at the top.
In April 2025, David Banks became president and CEO of AdventHealth, replacing Terry Shaw who retired after 40 years with the hospital network.
AdventHealth organizes its hospitals into four divisions.
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, uniting facilities that had operated independently for decades. The system later adopted the name Adventist Health System Sunbelt Healthcare Corporation. They did this after the General Conference of Seventh-day Adventists applied for the trade name Adventist Health System on December 26, 1979.
Mardian J. Blair served as president and CEO of AHS from 1984 until his retirement on January 1, 2000. He was succeeded by Thomas L. Werner.