PROPERTY AND EQUIPMENT (Details - Narrative) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	$ 105,600	$ 92,300	$ 83,100
Construction in Progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	73,400	18,100
Medical Equipment
Property, Plant and Equipment [Line Items]
Construction in progress, gross	26,600	2,600
Computer and Office Equipment
Property, Plant and Equipment [Line Items]
Construction in progress, gross	5,300	6,100
Software development costs
Property, Plant and Equipment [Line Items]
Property and equipment, gross	36,015	0
Construction in progress, gross	400
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	501,963	441,921
Construction in progress, gross	$ 41,100	$ 9,300