DSO Consolidation Report: Shares, Deals and Evidence

What does a DSO consolidation report actually measure?

A useful report separates how many dentists are affiliated, how practices are organized, which transactions closed, and who competes for a defined service in a place. Those questions need different evidence. One national percentage cannot answer all of them, even if the arithmetic is correct and the underlying source is reliable.

Start by naming the decision. A seller may want to understand the buyer landscape. A buyer may be testing whether an acquisition story rests on verified transactions. An owner may want to know whether a claimed national trend applies to local recruiting or patient access. Choose the evidence for that decision before selecting a headline number.

This report was reviewed September 16, 2026 and uses the ADA's 2024 snapshot. It does not claim a complete current deal count or local market measure.

Read the national affiliation snapshot with its limits

ADA HPI's 2024 workbook reports 16.07% of analyzed dentists affiliated with DSOs and 10.80% in practices with at least 100 locations, regardless of DSO status. It analyzes 198,117 dentists with assignable location data out of 212,459 practicing dentists. It flags potential undercounting and a one-time license-data migration issue. These are dentist shares, not office or transaction shares. ADA 2024 modality data.

The two percentages measure different, potentially overlapping groups. Do not add them. Affiliation and practice size answer different questions.

The workbook is linked from the source page. Save its version and definitions with any copied figure. A webpage viewed this month can contain data from an earlier year. Calling the download a current transaction count would erase that distinction and give the report more precision than it has.

For the basic business model, see what a DSO is. The decision here is how to interpret evidence of consolidation, not whether a particular support agreement fits a practice.

Keep dentists, establishments and enterprises apart

The Census SUSB glossary defines an establishment as a physical business location and an enterprise as domestic establishments under common ownership or control. Its firm definition also depends on the geography and industry used. These units should not be substituted for one another. Census SUSB definitions.

When comparing two sources, create a unit column beside the figures. If the units differ, stop and decide what bridge would be needed. A practice can have more than one office, and a count of dentists tells you little about their hours at each address without further evidence. Do not solve that gap by assuming a fixed number of dentists per site.

This table is a reading tool, not a conversion formula. If a report says a group added locations, look for the actual list and the counting rule. The change might include a new office or a reclassified location. Preserve unknowns instead of treating all additions as purchases.

Distinguish consolidation by acquisition from other growth

In May 2024, the FTC and DOJ opened an inquiry into serial acquisitions and roll-up strategies across industries. The announcement describes growth through purchases of smaller firms in the same or related sectors. It is a historical inquiry, not a finding about a particular dental group. FTC 2024 inquiry.

For your own event file, separate purchases from new offices, hires, affiliations and internal changes. Record the event type shown by the evidence. A larger total may reflect several kinds of change at once. The label roll-up should not remove the need to trace those changes.

Keep announcements separate from confirmed completions. A release may describe an agreement without establishing that every site has transferred. Record the evidence date and the event date independently. If a later release updates an earlier one, link them rather than counting both as new transactions.

Do not guess the buyer's funding source or ultimate control from its name. Record what the reviewed evidence establishes and which ownership questions remain open. A brand, an operating company and a fund may have distinct roles. An incomplete ownership chain should remain visibly incomplete.

Build an event file another reader can reproduce

Use one record for each proposed event, with links to later status updates. Add separate location records if the question needs a site count. That prevents one multi-office acquisition from being treated as many unrelated deals, while still preserving the number of offices involved.

An event file can be useful without prices. Leave consideration blank if it is not disclosed. Do not estimate a purchase price from group size or an unsupported multiple. A report with fewer verified fields is more useful than a fuller table built on guesses.

The multi-location group sale guide addresses the actual closing perimeter of one sale. Bring that same care to reading public announcements, while recognizing that public information may not reveal every contractual detail.

Worked example: reconcile a change in affiliated dentists

This example is entirely fictional. All counts and movements are supplied, exact teaching inputs. They are not estimates of the U.S. dental market, a sample of real deals, or a forecast. The same affiliation definition is used at both dates, and people are counted once within each total.

At the start of the period, there are 1,000 dentists in the measured population and 160 affiliated dentists. At the end, the total is 1,100 and the affiliated count is 198. The affiliation share rises from 16% to 18%, a gain of two percentage points. The number of affiliated dentists rises by 38.

The ending share is 198 divided by 1,100, or 18%. The bridge explains the change in the affiliated count. It does not, by itself, identify how many purchase agreements were signed or closed. Several dentists could be involved in one transaction, while a hire could alter the count without a practice purchase.

Suppose a separate, supplied event file confirms three completed acquisitions involving the 24 previously nonaffiliated dentists. That file establishes three events in the exercise. Dividing 38 by a preferred dentists-per-deal assumption would not produce a verified deal count. The event evidence answers a different question from the population bridge.

The overall population grows by 100 in this case. The bridge above describes only the affiliated component. It does not claim to show every entry, exit or change among nonaffiliated dentists. A complete population account would need those movements too.

Test the denominator and the flow separately

For the first sensitivity, keep the ending affiliated count at 198 but change the supplied ending total population to 1,200. The ending share becomes 16.5%. Compared with the same opening 16%, the rise is only half a percentage point, despite the same increase of 38 affiliated dentists.

This branch shows why a larger affiliated count does not fix the percentage change. The denominator also matters. It is a separate fictional population scenario, not a claim that the underlying real-world movements could remain identical after a population change.

For the second sensitivity, return the ending total to 1,100. Change only the status of ten new entrants: they enter as nonaffiliated rather than affiliated. The overall population is unchanged, while the affiliated count becomes 188. Its share is about 17.09%, calculated before rounding.

The three confirmed acquisition events in the supplied event file remain unchanged in this second branch. The affiliation share changes even though the acquisition count does not. That is the point of the exercise: a workforce measure and a transaction measure can move differently without either being wrong.

Why national affiliation is not a local competition finding

The 2023 DOJ and FTC Merger Guidelines describe relevant markets with product or service and geographic dimensions. The agencies describe the guidelines as a nonbinding framework. A national dentist-affiliation percentage does not itself define such a market or establish a legal conclusion. 2023 Merger Guidelines.

For a business discussion, write the local question plainly. Are you studying access to a specific service, hiring options for a role, or the set of buyers for a practice? Those are not interchangeable markets. Have the appropriate advisers define the evidence needed for any legal competition analysis.

Do not assign every affiliated dentist to a single competitor. Affiliation is a broad category, not one owner. Equally, a small national share cannot settle a local question. The report needs evidence about the relevant parties and their actual roles before drawing a narrower conclusion.

The demographics and site-selection guide examines boundaries and local office lists. Use it for that separate operating research. Do not turn a national consolidation chart into a local patient-demand forecast or a recommended acquisition area.

What should sellers and buyers do with this report?

A seller can use the report to improve the questions asked of potential buyers. Which entity will contract? Which service team will support this office? What evidence supports the buyer's ability to complete the proposed deal? An industry trend does not establish those answers for a particular bidder.

A buyer can use the same discipline when evaluating a target's growth narrative. Separate acquired offices from new sites and distinguish historical results from the next planned addition. The group acquisition guide addresses the operating decision to add practices. Consolidation statistics do not replace that work.

For funding, take the actual target and supported operating case to the financing review. A market report can set context, but it cannot demonstrate repayment capacity, obtain lender approval, or prove a sale price. Avoid importing a national growth percentage directly into a practice forecast.

Keep initial buyer outreach seller-blind and obtain an NDA before identifying a practice. Involve staff when their actual reporting or transition duties require participation, with the owner setting the scope. Public market research does not authorize release of private financial, staff or patient information, and it does not delay required notices.

Common mistakes when reading consolidation headlines

Do not add overlapping categories or compare counts with different units as though they were shares of the same total. Preserve the data year, source version and denominator. A fresh publication date does not make every underlying observation fresh.

Another error is counting an announcement and its closing update as two events. A third is describing an undisclosed price as known because a similar deal had a reported price. Keep missing terms visible. If the report cannot support a proposed conclusion, narrow the conclusion rather than inventing the missing evidence.

When updating the report, retain the prior version and explain what changed. A source revision, a corrected duplicate and a newly completed event are different reasons for a changed total. The reader should be able to see which one applies.

Summary: use each measure for its own decision

A sound consolidation report keeps affiliated dentists, practice size, completed events and local competition questions distinct. The fictional bridge shows how affiliation can change through several flows and how a denominator change alters the share. Use dated national evidence for context and verified event records for transaction claims. To discuss what that context means for a specific sale or acquisition, schedule a planning conversation with Jason Taken at HedgeStone.