On April 10, 2009, the Compensation Committee of the Board of Directors of American Dental Partners, Inc. (the "Company") established performance targets for the executive officers for 2009 under the Company's Executive Bonus Program. Targeted bonus amounts range from 25% to 100% of annual base salaries for executive officers.

The Compensation Committee established the primary quantitative performance objective as achievement of a target based upon selected items of cash flow from the Company's 2009 operations ("Selected Cash Flow"). Selected Cash Flow will be calculated as follows: (a) earnings before interest, taxes, depreciation, and amortization, and excluding 123R stock option expense, less (b) capital expenditures, and (c) plus the amount of any reduction in accounts receivable or minus the amount of any increase in accounts receivable, all as determined based upon the Consolidated Statements of Income and Consolidated Statements of Cash Flows included in the Company's audited financial statements for 2009. In selecting the primary quantitative performance objective under the Company's Executive Bonus Program for 2009, the Compensation Committee considered the current uncertain economic climate and the need for the Company to reduce and refinance its debt, and determined that the 2009 Executive Bonus Program should incent the executive officers to generate and preserve cash.

The bonuses for some executive officers are tied solely to the Selected Cash Target. For each executive officer who does not have his entire bonus tied to the Selected Cash Target, the balance of the bonus will be based upon achievement of one or more annual individual performance objectives ("APOs").

For the portion of the bonus for the Chief Executive Officer, Chief Operating Officer, and Chief Financial Officer which is tied to the Selected Cash Target, that officer will earn a percentage of that portion of his bonus determined pursuant to the following table:

               % of Selected                       % of That Part
               Cash Target Achieved                of Bonus Earned
               less than 90%                                     0
               at least 90%, but less than 95%                  90 %
               at least 95%, but less than 100%                 95 %
               at least 100%, but less than 105%               100 %
               at least 105%, but less than 110%               120 %
               at least 110%                                   140 %

The portion of the bonus for the Chief Accounting Officer which is tied to the Selected Cash Target will be earned only if the Selected Cash Target is achieved. The additional parameters for the respective executive officers' bonuses are as follows:

Mr. Serrao's entire bonus will be based upon the Company's achievement of the 2009 Selected Cash Target. Mr. Serrao's potential bonus is equal to 100% of his base salary.

Mr. Vaughan's entire bonus will be based upon the Company's achievement of the 2009 Selected Cash Target. Mr. Vaughan's potential bonus is equal to 80% of his base salary.

Mr. Vargo's potential bonus is equal to 25% of his base salary. One half of his bonus may be awarded if the Company achieves the 2009 Selected Cash Target. The other half may be awarded based upon achievement of APOs established by the Chief Financial Officer.

The Committee may consider other factors in awarding bonuses and may, in its discretion, award bonuses in greater or lesser amounts than those determined pursuant to the targets and other parameters set forth above.