American Dental Partners, Inc. (ADPI) is a dental support organization based in Wakefield, Massachusetts. Founded in 1995, it supplies affiliated dental group practices with non-clinical business services - facilities, equipment, staffing, billing, marketing and technology - so that dentists can concentrate on patient care. ADPI listed on Nasdaq under the symbol ADPI in April 1998, was taken private by JLL Partners in February 2012 at a $392 million enterprise value, and was acquired by Heartland Dental, the KKR-backed DSO, in June 2021. At that point it supported 23 dental group practices across roughly 278 locations in 21 states.
American Dental Partners has been acquired
This company is no longer available on our private secondary market.
Company data and valuation marks are estimates and may be incomplete, stale, erroneous, or revised.
Founded
1995
Employees
1,001–5,000
Total Funding
$15M
1 rounds
Funding data and valuation marks are estimates and may be incomplete, stale, erroneous, or revised.
Total raised $15M across 1 rounds
Last updated 09-29-2026
| Date | Round | Amount Raised | Valuation | Lead Investors |
|---|---|---|---|---|
| Jan 8, 1996 | Initial capitalization (Series A & B preferred) | $15M | — | Summit Partners |
Pat Bauer
President and Chief Executive Officer, Heartland Dental - the organization that has included American Dental Partners since June 2021
Competitor list is illustrative and may be incomplete, stale, or erroneous.
Aspen Dental
Dental support organization inside The Aspen Group, supporting more than 1,100 offices nationwide and one of the two largest US DSOs alongside Heartland Dental.
PDS Health (Pacific Dental Services)
Founder-owned dental support organization supporting more than 1,000 offices, placing it third among US DSOs by office count.
MB2 Dental
Doctor-partnership dental support organization with more than 800 affiliated offices, competing directly for group-practice affiliations.
Smile Brands
Dental support organization supporting roughly 600 offices, a long-standing competitor in multi-location practice support services.
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