EXHIBIT 11 AMSURG CORP. EARNINGS PER SHARE FOR THE THREE AND NINE MONTHS ENDED SEPTEMBER 30, 2003 AND 2002 The following is a reconciliation of the numerator and denominators of basic and diluted earnings per share (in thousands, except per share amounts): PER EARNINGS SHARES SHARE (NUMERATOR) (DENOMINATOR) AMOUNT ----------- ------------- ------ For the three months ended September 30, 2003: Basic earnings per share: Net earnings $ 7,531 19,918 $0.38 Effect of dilutive securities options -- 382 ------- ------ Diluted earnings per share: Net earnings $ 7,531 20,300 $0.37 ======= ====== For the three months ended September 30, 2002: Basic earnings per share: Net earnings $ 6,221 20,498 $0.30 Effect of dilutive securities options -- 330 ------- ------ Diluted earnings per share: Net earnings $ 6,221 20,828 $0.30 ======= ====== For the nine months ended September 30, 2003: Basic earnings per share: Net earnings $21,871 20,107 $1.09 Effect of dilutive securities options -- 305 ------- ------ Diluted earnings per share: Net earnings $21,871 20,412 $1.07 ======= ====== For the nine months ended September 30, 2002: Basic earnings per share: Net earnings $17,481 20,338 $0.86 Effect of dilutive securities options -- 361 ------- ------ Diluted earnings per share: Net earnings $17,481 20,699 $0.84 ======= ======