Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2019	May 06, 2019
Document and Entity Information
Entity Registrant Name	RadNet, Inc.
Entity Central Index Key	0000790526
Document Type	10-Q
Trading Symbol	RDNT
Document Period End Date	Mar. 31, 2019
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		50,079,978
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2019