REVENUE AND ACCOUNTS RECEIVABLE - Schedule of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Revenue $	$ 3,137,757	$ 2,738,916	$ 1,609,369
Revenue %	100.00%	100.00%	100.00%
Capitated revenue
Disaggregation of Revenue [Line Items]
Revenue $	$ 3,054,412	$ 2,606,916	$ 1,529,120
Revenue %	97.30%	95.20%	95.00%
Fee-for-service and other revenue
Disaggregation of Revenue [Line Items]
Revenue $	$ 83,345	$ 132,000	$ 80,249
Revenue %	2.70%	4.80%	5.00%
Medicare | Capitated revenue
Disaggregation of Revenue [Line Items]
Revenue $	$ 2,867,275	$ 2,392,445	$ 1,334,308
Revenue %	91.30%	87.40%	82.90%
Other capitated revenue | Capitated revenue
Disaggregation of Revenue [Line Items]
Revenue $	$ 187,137	$ 214,471	$ 194,812
Revenue %	6.00%	7.80%	12.10%
Other capitated revenue | Fee-for-service and other revenue
Disaggregation of Revenue [Line Items]
Revenue $	$ 1,607	$ 38,733	$ 18,560
Revenue %	0.10%	1.40%	1.10%
Fee-for-service | Fee-for-service and other revenue
Disaggregation of Revenue [Line Items]
Revenue $	$ 27,704	$ 43,171	$ 25,383
Revenue %	0.90%	1.60%	1.60%
Pharmacy | Fee-for-service and other revenue
Disaggregation of Revenue [Line Items]
Revenue $	$ 54,034	$ 50,096	$ 36,306
Revenue %	1.70%	1.80%	2.30%