Healthcare Insights

Top IDNs by Physician Group membership

The following list highlights the top Integrated Delivery Networks (IDNs) by number of affiliated physician groups. A physician group is constituted by one or more physicians operating as an organization to deliver care.  In order for an organization to be placed under a network, Definitive Healthcare requires that the IDN have ownership or operational control over the group. 

With 42 affiliated physician groups, Wills-Knighton Health System—a Louisiana-based IDN—has the greatest number of reported in-network physician groups.  The states appearing the most frequently as IDN headquarters were Pennsylvania and Tennessee, each with five networks represented. Due to numerous ties, the top 23 IDNs are represented in the list below. 

Top IDNs by Physician Group membership

Network NameDefinitive IDStateAffiliated Physician GroupsNet Patient RevenueExplore Dataset
1Willis-Knighton Health System7091LA42$1,057,835,074.00 Explore
2Saint Francis Healthcare System992190MO36$527,267,909.00 Explore
3Novant Health4736NC27$3,746,688,899.00 Explore
4University of Pittsburgh Medical Center6448PA26$8,814,665,418.00 Explore
5Community Health Systems542233TN25$10,803,609,740.00 Explore
6Allegheny Health Network7155PA24$2,541,073,782.00 Explore
7HCA East Florida Division780654FL20$3,385,979,772.00 Explore
7HCA Healthcare4710TN20$43,736,535,205.00 Explore
9Baptist Health South Florida7010FL18$3,115,809,504.00 Explore
9Dignity Health4698CA18$11,716,357,682.00 Explore
11Baylor Scott & White Health577357TX17$7,093,830,295.00 Explore
12Jefferson Health7210PA16$3,739,470,428.00 Explore
12LifePoint Health7004TN16$8,135,145,521.00 Explore
12UPMC Pinnacle550155PA16$1,512,010,615.00 Explore
15Acadia Healthcare7230TN15$857,151,639.00 Explore
15HCA Continental Division780649CO15$2,636,549,608.00 Explore
17HCA West Florida Division780653FL14$2,856,763,352.00 Explore
18Adventist Health7053CA13$4,230,354,325.00 Explore
18Baptist Health (Jacksonville FL)4699FL13$1,424,057,214.00 Explore
18Universal Health Services7055PA13$9,411,099,588.00 Explore
21Atrium Health4697NC12$7,404,799,037.00 Explore
21Duke LifePoint Healthcare541933TN12$1,491,003,301.00 Explore
21HCA Medical City Healthcare780650TX12$3,138,212,353.00 Explore

Fig 1. Data from Definitive Healthcare Hospitals & IDNs Database; affiliation data is proprietary to Definitive Healthcare.


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