How Do DSOs and OSOs Make Money?

An orthodontists reviews an x-ray with a patient. Learn how DSOs and OSOs generate returns, where private equity fits in, and how doctor-owned models differ before you evaluate a partnership offer.

Understanding the business model behind DSOs and OSOs, and why who’s funding the model changes everything

The question worth asking before you sign anything

Every partnership offer an orthodontist receives, whether it comes from a dental service organization (DSO), an orthodontic service organization (OSO), or a whether it comes from a private-equity backed dental service organization (DSO) is built on the same underlying question: how does this arrangement make money, and for whom?

Most orthodontists evaluate these offers by looking at the numbers on the table: the multiple, the cash-at-close percentage, the level of promised autonomy. Those numbers matter, but they are downstream of something more fundamental. Understanding how DSOs and OSOs make money means understanding a specific business model, and that business model determines what an organization needs from you, how long it plans to hold your practice, and what happens after the deal closes.

Having the full context behind each model before evaluating an offer changes what you look for in the fine print. This article walks through how a typical DSO generates returns, where private equity fits into that picture, and how a doctor-owned OSO or partnership model works differently, using Corus as one example of a structural alternative.

How a typical DSO/OSO generates returns

The private-equity-backed DSO business model, explained simply, rests on three moves, repeated at scale: centralize, grow EBITDA, and exit. That sequence is also the DSO revenue model in practice, since each lever is a way of increasing what the organization ultimately collects at sale or recapitalization, not just what it earns from day-to-day patient care.

Centralization.

When a DSO or OSO acquires a practice, it typically folds administrative functions, billing, payroll, marketing, procurement, and HR into a shared back office serving every practice in the portfolio. This creates real efficiencies. One centralized team can serve dozens (maybe even hundreds when it comes to larger platforms) of locations instead of each practice operating independently. For a DSO, centralization is also the first lever in the return equation: it lowers the cost structure of each acquired practice.

EBITDA growth.

The second lever is growing earnings before interest, taxes, depreciation, and amortization (EBITDA) across the portfolio. This happens through a mix of revenue growth, cost reduction, and standardization. Because doctor compensation is one of the largest cost lines in any practice, DSO/OSO integration often restructures how the doctor is paid, sometimes shifting an owner into an associate-doctor compensation model, which mechanically increases the EBITDA the DSO/OSO can report on that location.

The exit.

The third and most important lever is the one most orthodontists never see: multiple arbitrage.

A single practice, sold on its own, typically trades at a lower EBITDA multiple than the same practice does once it is folded into a larger, aggregated platform. Individual dental and orthodontic practices tend to change hands in the mid-single-digit multiple range, while an aggregated platform of similar practices, with diversified provider risk and centralized systems, can be valued into the low double digits when that platform is sold or recapitalized1. IIndustry analyses of dental DSO transactions describe this gap clearly: a single practice typically sells for meaningfully less, relative to its earnings, than the same practice does once it becomes part of a larger group

In plain terms: the DSO/OSO isn’t primarily building a return by running your practice better year over year, though it may do that too. It’s building a return by buying practices at one valuation, combining them into something an institutional buyer will pay a much higher valuation for, and then selling or recapitalizing the whole platform. The individual practice, and the doctor who built it, become one input into that larger transaction.

Where private equity fits in, and what that means for incentives

Many large DSOs are backed by private equity, which typically invests through a fund with a defined lifespan, often three to five years, and a return obligation to its own investors. That structure isn’t inherently a problem, but it does introduce a specific set of incentives worth understanding.

A PE-backed DSO is generally working toward a future liquidity event: a sale to a larger platform, a recapitalization that brings in new investors or lenders, or (occasionally) an IPO. Every operating decision along the way, including how quickly to acquire, how aggressively to standardize clinical protocols, and how compensation models are structured, gets filtered through the question of how it affects the platform’s value at that future exit.

This is where the rollover equity conversation matters. Many DSO deals include a rollover component, where the selling doctor takes part of their consideration as equity in the acquiring entity rather than all cash1. That can be a genuine upside if the platform performs well at its next sale. It can also mean the doctor is now a minority stakeholder in a company whose strategic decisions, timeline, and next buyer they don’t control, with equity that is illiquid until the sponsor decides to sell.

None of this makes a PE-backed DSO a bad option for every orthodontist. For some, the cash-now, reduced-administrative-burden trade is exactly right. But it’s a fundamentally different arrangement than doctor-owned equity in a company built to be held, not flipped.

How a doctor-owned OSO’s model differs

An orthodontic service organization built around doctor ownership starts from a different premise. The question isn’t “how do we grow this portfolio to sell it,” it’s “how do we build something that the doctors who make up the organization actually want to own.”

Corus is one example of that structure. Rather than doctors selling their equity to outside investors and taking a payout, Corus is built around genuine equity participation: Doctor-Partners hold real ownership stakes in the organization they’re part of, not just in their individual location. That changes who the growth benefits. When the organization grows, adds locations, or improves margins, the value accrues to the doctors who hold equity in it.

Where does external capital fit into that model, since scaling still requires it? The distinction is in what the capital buys. Outside capital in a doctor-owned structure funds growth and infrastructure. It doesn’t purchase control of the governance or displace doctor decision-making. Corus has grown to include over 65 Doctor-Partners and more than 75 locations in our network spanning 13 U.S. states and 5 Canadian provinces since its founding in 2019. We serve over 60,000 patients annually while maintaining doctor-led governance, rather than handing clinical or strategic decisions over to outside investors3.

This is the practical meaning behind the phrase “buy in, not sell out.” In a doctor-owned model, joining isn’t a transaction that ends your stake in the business. It’s an agreement to invest in a larger platform where you’re a genuine equity partner rather than a compensated employee working for the business you used to own.

The key question to ask any organization

Every DSO or OSO offer, however it’s structured, answers one question, whether it says so directly or not: who profits from a DSO or an OSO when it grows, and who captures that value?

In a PE-backed DSO built for a future exit, the answer is usually the fund and its sponsors first, with any rollover equity the doctor holds coming along for the ride, for better or worse. In a doctor-owned OSO, the answer is meant to be the doctors themselves, because their practices directly influence the value of their equity.

Before signing anything, it’s worth asking directly: Who owns this organization? What happens to that ownership at the next liquidity event, and is there one planned? If I take equity instead of cash, whose decisions determine what that equity is worth in five years? The answers won’t be identical across offers, and they shouldn’t be. But they’re the difference between evaluating what might feel like a job instead of a partnership.

Takeaways

The DSO and OSO landscape is often presented to orthodontists as a spectrum of deal terms: percentage of cash at close, length of employment commitment, degree of clinical autonomy retained. Those terms matter, but they’re symptoms of the underlying business model, not the model itself. The real distinction, a doctor-owned OSO versus a private equity DSO, comes down to who the growth is built to benefit, and understanding how an organization actually makes money is what makes the rest of the fine print legible.

Corus Orthodontists: A Unique OSO Model

Corus takes a different approach to how a partnership organization makes money: doctor-led, ortho-specific, and built around genuine equity participation rather than a portfolio built to be sold quickly. Doctor-Partners hold real ownership stakes and share in the value they help create, rather than watching that value accrue to an outside fund with its own financial agenda.

Book a Discovery Call to talk through what a doctor-owned partnership model could look like for your practice today.