News

Wakefield, Massachusetts - Jul 31, 2006 - American Dental Partners, Inc. (NASDAQ:ADPI) announced financial results today for the quarter and six month period ended June 30, 2006.

Comparing the second quarter of 2006 with the second quarter of 2005:

• Net revenue was $55,078,000 as compared to $49,427,000, an increase of 11%.
• Earnings from operations were $5,723,000 as compared to $5,280,000, an increase of 8%. Excluding stock-based compensation expense from 2006 results (discussed below), earnings from operations increased 15%.
• Net earnings were $3,183,000 as compared to $2,954,000, an increase of 8%. Excluding stock-based compensation expense from 2006 results (discussed below), net earnings increased 15%.
• Diluted net earnings per share were $0.25, as compared to $0.23, an increase of 9%. Excluding stock-based compensation expense from 2006 results (discussed below), diluted earnings per share increased 17%.
• Diluted cash net earnings per share were $0.31 as compared to $0.29, an increase of 7%. Excluding stock-based compensation expense from 2006 results (discussed below), diluted cash net earnings per share increased 14%.

Comparing the first six months of 2006 with the first six months of 2005:

• Net revenue was $109,144,000 as compared to $97,572,000, an increase of 12%.
• Earnings from operations were $10,811,000 as compared to $9,865,000, an increase of 10%. Excluding stock-based compensation expense from 2006 results (discussed below), earnings from operations increased 16%.
• Net earnings were $5,974,000 as compared to $5,463,000, an increase of 9%. Excluding stock-based compensation expense from 2006 results (discussed below), net earnings increased 17%.
• Diluted net earnings per share were $0.46 as compared to $0.43, an increase of 7%. Excluding stock-based compensation expense from 2006 (discussed below), diluted net earnings per share increased 16%.
• Diluted cash net earnings per share were $0.59 as compared to $0.55, an increase of 7%. Excluding stock-based compensation expense from 2006 (discussed below), diluted cash net earnings per share increased 13%.

Patient revenue of the Company's affiliated dental group practices, which is not consolidated with the Company's financial results and is a non-GAAP financial measure, was $84,047,000 for the quarter as compared to $75,821,000 for the prior year's same quarter, an increase of 11%. Same market revenue growth for the Company's affiliated dental group practices as measured by patient revenue was 10% for the quarter.

For the quarter, cash flow from operations was $6,678,000, capital expenditures were $1,368,000 and amounts paid for affiliations, including contingent payments and affiliation costs, amounted to $3,690,000. The Company expanded two dental facilities and completed four practice affiliations which were combined with its existing affiliated dental group practices in Arizona, New York, Texas and Wisconsin. The Company also completed one platform affiliation with Deerwood Orthodontics and entered into a Service Agreement with a professional association in Minnesota with the intention of developing two de novo practices. The Company intends to operate this affiliation separate from its existing Minnesota affiliates.

The Company's debt to total capitalization stood at 19% at June 30, 2006, compared to 24% at December 31, 2005. The Company achieved an annualized cash return on committed capital of 21% for the quarter and cash return on equity of 15% for the quarter.

The Company adopted Statement of Financial Accounting Standards No. 123 (R) "Share-Based Payment", effective January 1, 2006. As a result, the Company recognized $374,000 in stock-based compensation expense, $227,000 net of tax or $.02 per diluted share, during the second quarter and $677,000 in stock-based compensation expense, $411,000 net of tax or $.03 per diluted share, during the six months ended June 30, 2006.

During the second quarter, the Company incurred approximately $370,000 in legal fees related to the previously announced litigation between the Company's Minnesota subsidiary, PDHC, Ltd., and PDG, P.A., the affiliated practice at Park Dental. The Company has been made aware that PDG, P.A. is no longer accredited by the Accreditation Association for Ambulatory Health Care.

Cash net earnings and cash earnings from operations are non-GAAP financial measures. In accordance with the requirement of SEC Regulation G, please see the attached financial tables for a presentation of the most comparable GAAP measures and the reconciliation to the nearest GAAP measure and all additional reconciliations required by Regulation G.

For further discussion of these events and a comprehensive review of the second quarter ended June 30, 2006, the Company will host its previously announced conference call on Tuesday, August 1, 2006 at 10:00 a.m. EDT, which will be broadcast live over the Internet at www.amdpi.com. The call will be hosted by Gregory A. Serrao, Chairman, President and Chief Executive Officer. To access the webcast, participants should visit the Investor Relations section of the website at least fifteen minutes prior to the start of the conference call to download and install any necessary audio software. A replay of the webcast will be available at www.amdpi.com and www.streetevents.com approximately two hours after the call through 6:00 p.m. EDT Tuesday, August 8, 2006.

American Dental Partners is one of the nation's leading business partners to dental group practices. The Company is affiliated with 20 dental group practices which have 200 dental facilities with approximately 1,873 operatories located in 18 states.

"Safe Harbor" Statement under the Private Securities Litigation Reform Act of 1995: With the exception of the historical information contained in this news release, the matters described herein contain "forward-looking" statements that involve risk and uncertainties that may individually or collectively impact the matters herein described, including but not limited to the possibility that we may not realize the benefits expected from our acquisition and affiliation strategy, economic, regulatory and/or other factors outside the control of the Company, which are detailed from time to time in the "Risk Factors" section of the Company's SEC reports, including the annual report on Form 10-K for the year ended December 31, 2005.

(1) Cash net earnings and diluted cash net earnings per share are not measures of financial performance under GAAP. Cash net earnings excludes amortization expense related to intangible assets, net of tax. The Company incurs significant amortization expense related to its service agreements while many companies, both in the same industry and other industries, no longer amortize a significant portion of their intangible assets pursuant to Statement of Financial Accounting Standards No. 142 - Goodwill and Other Intangible Assets. The Company believes that cash net earnings and diluted cash net earnings per share are important financial measures for understanding its relative financial performance.

(2) Cash earnings from operations is not a measure of financial performance under GAAP. The Company believes that cash return on committed capital and cash return on equity are useful financial measures for understanding its financial performance.

(3) Average committed capital calculated as average of beginning of quarter and end of quarter debt, including current portion, plus stockholders' equity. Average stockholders' equity calculated as average of beginning of quarter and end of quarter stockholders' equity.

(4) Patient revenue of the affiliated dental group practices is not consolidated with the Company's financial statements.

(5) Same market patient revenue excludes new platform affiliations that occurred during the periods of comparison in which a new service agreement was entered into.