Selected Quarterly Financial Information (Unaudited):

12 Months Ended

Dec. 31, 2012

Selected Quarterly Financial Information (Unaudited):

16. Selected Quarterly Financial Information (Unaudited):

The following tables set forth a summary of the Company’s selected quarterly financial information for each of the four quarters ended December 31, 2012 and 2011 (in thousands, except for per share data):


	2012 Quarters
	First			Second			Third			Fourth
Net patient service revenue	$	422,616		$	449,530		$	473,134		$	471,332

Operating expenses:
Practice salaries and benefits		272,261			275,951			292,030			290,671
Practice supplies and other operating expenses		16,985			17,956			17,606			19,276
General and administrative expenses		46,869			48,200			48,200			50,271
Depreciation and amortization		7,113			7,687			7,925			8,091

Total operating expenses		343,228			349,794			365,761			368,309

Income from operations		79,388			99,736			107,373			103,023

Investment income		428			365			422			681
Interest expense		(554	)		(848	)		(624	)		(1,219	)

Income before income taxes		79,262			99,253			107,171			102,485

Income tax provision		30,912			38,709			41,261			36,382

Net income	$	48,350		$	60,544		$	65,910		$	66,103

Per common and common equivalent share data (1):
Net income:
Basic	$	1.00		$	1.25		$	1.35		$	1.35

Diluted	$	0.98		$	1.22		$	1.32		$	1.32

Weighted average shares:
Basic		48,269			48,543			48,938			49,113

Diluted		49,399			49,545			49,809			50,106

(1)	Basic and diluted per share amounts are computed for each of the periods presented. Accordingly, the sum of the quarterly per share amounts may not agree with the full year amount.


	2011 Quarters
	First			Second			Third			Fourth
Net patient service revenue	$	382,283		$	393,402		$	407,665		$	404,898

Operating expenses:
Practice salaries and benefits		243,894			235,292			246,687			244,523
Practice supplies and other operating expenses		15,090			16,253			16,718			18,754
General and administrative expenses		41,798			42,702			43,010			42,846
Depreciation and amortization		5,781			6,032			6,213			7,266

Total operating expenses		306,563			300,279			312,628			313,389

Income from operations		75,720			93,123			95,037			91,509

Investment income		325			329			337			504
Interest expense		(911	)		(988	)		(1,056	)		(684	)

Income before income taxes		75,134			92,464			94,318			91,329

Income tax provision		29,678			36,523			36,077			32,970

Net income	$	45,456		$	55,941		$	58,241		$	58,359

Per common and common equivalent share data (1):
Net income:
Basic	$	0.96		$	1.18		$	1.21		$	1.21

Diluted	$	0.94		$	1.15		$	1.19		$	1.19

Weighted average shares:
Basic		47,149			47,531			47,990			48,126

Diluted		48,361			48,730			48,935			49,132

(1)	Basic and diluted per share amounts are computed for each of the periods presented. Accordingly, the sum of the quarterly per share amounts may not agree with the full year amount.

- Definition

The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.

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