Accounts Receivable and Allowance for Doubtful Accounts

3 Months Ended

Mar. 31, 2016

Accounts Receivable and Allowance for Doubtful Accounts

6.	Accounts Receivable and Allowance for Doubtful Accounts

A summary of activity in the Company’s allowance for doubtful accounts is as follows (in thousands):

Balance at December 31, 2015	$	16,877
Additions charged to provision for doubtful accounts		5,483
Accounts written off, net of recoveries		(3,896	)
Balance at March 31, 2016		18,464

For the three months ended March 31, 2016 approximately 13.0% of the Company’s revenues were reimbursed by Anthem Blue Cross Blue Shield of Colorado; 10.7% by Blue Cross Blue Shield of Texas; and 10.7% by Aetna. No other payor accounted for more than 10% of revenue reimbursements for the three months ended March 31, 2016.

For the three months ended March 31, 2015, approximately 14.0% of the Company’s revenues were reimbursed by Anthem Blue Cross Blue Shield of Colorado; 17.1% by Blue Cross Blue Shield of Texas; and 11.6% by Aetna. No other payor accounted for more than 10% of revenue reimbursements for the three months ended March 31, 2015.