Dental Practice Out of Network: The Math of Dropping a PPO

Taking a dental practice out of network is one of the most stressful decisions an owner can face, and most who consider it stay in-network anyway, out of fear rather than math. The fear is understandable. Dropping a plan feels like firing a chunk of your patients. But the decision is a calculation, and once you run it, the fear usually shrinks to its real size.

I've watched practices agonize over this for years, and I weighed it carefully for my own practice in Peterborough, New Hampshire. The owners who decided well all did the same thing first. They replaced the anxiety with a spreadsheet.

This article walks the actual math of taking a dental practice out of network: how PPO write-offs erode your fee, the break-even on patient attrition, how to test-drop one plan without wrecking your schedule, and who should not do this at all.

What does a dental practice out of network status actually mean?

Going out of network means ending your contract with a specific insurance plan, so you no longer accept its negotiated fee schedule. You can still treat those patients and even bill the insurer, but you're paid your full fee instead of the discounted contracted rate. The patient covers more of the difference.

The key word is "a plan," singular. Going out of network is not all-or-nothing. Most practices that do this drop one underperforming plan at a time, not every contract at once. You can be in-network with five plans and out with one, which is exactly how a careful owner tests the water.

What changes for the patient is their out-of-pocket cost and reimbursement paperwork. What changes for you is that you keep your full fee on that plan's patients, minus whatever attrition follows. Whether that trade works is the whole question, and it's answerable with numbers.

How do PPO write-offs really erode your fee?

A PPO write-off is the gap between your full fee and the plan's allowed amount, and you eat it on every procedure. If your fee for a crown is $1,400 and the plan allows $900, you write off $500. That write-off isn't a discount you chose. It's revenue you produced and never collected.

Stacked across a year, write-offs are often the single largest invisible expense in the practice. The dentistry gets done, the chair time gets spent, the lab bill gets paid, and a meaningful slice of the production simply evaporates at the contracted rate. With US dental care spending topping $124 billion a year, by ADA Health Policy Institute figures, the write-off layer across the industry is enormous, and most of it is never examined plan by plan.

Here's what makes write-offs so easy to ignore: they never show up as a bill. No one sends you an invoice for the $500 you didn't collect on that crown. It's a silent subtraction, buried in the gap between what you charged and what hit the bank. That invisibility is exactly why owners tolerate write-offs for years that they'd never tolerate as a line-item expense. The first step is simply making the number visible, plan by plan, so the worst contracts stop hiding. Strong patient retention also changes the calculus, because loyal patients are the ones most likely to stay with you through a plan change.

The figures above are illustrative, with the numbers stated, not benchmarks for your practice. Pull your own allowed amounts per plan. The gap between your fee and each plan's allowed schedule is the number that decides whether a plan is worth keeping.

What is the break-even point of dropping a plan?

The break-even is the number of patients you can lose before dropping the plan costs you money. Because you collect more per patient out of network, you can lose some patients and still come out even. That break-even attrition rate is the single most important number in this decision.

The logic is straightforward. If going out of network raises your collected revenue per remaining patient by, say, 35%, you can lose a meaningful share of that plan's patients and still net the same or more. A worked example with stated assumptions: 100 patients on a plan, collecting an average of $700 each in network, versus $950 each out of network. You'd break even even if roughly a quarter of them left, and you'd come out ahead if fewer did.

Sit with that for a second. You could lose 25 of 100 patients and not lose a dollar. Most owners assume any attrition is a disaster. The math says otherwise. The fear is real, but it's rarely proportional to the actual downside once the numbers are on the table.

Those numbers are illustrative to show the method, not a promise about your outcome. The real inputs are your allowed amounts, your full fees, and your honest estimate of how loyal that plan's patients are. Dentistry is a stable field, with employment projected to grow about 4% through 2032 per the Bureau of Labor Statistics, which means the demand to replace any lost patients is generally there. Remember that each retained patient carries lifetime value, so the cost of attrition is bigger than one year of fees.

How do you drop a plan without torching the schedule?

Drop one plan at a time, start with your worst-paying contract, and give patients a long runway. The responsible way to go out of network is gradual and tested, never a sudden mass exit. You're running an experiment, and you want to read the result before you repeat it.

A phased approach protects the schedule and your nerves:

• Pick the worst plan first: the one with the deepest write-offs and the fewest patients, so the downside is contained if attrition runs high.
• Give long notice: tell affected patients months ahead, in writing, so no one is surprised at the front desk.
• Track attrition against your break-even: watch how many actually leave versus the number you calculated you could afford to lose.
• Decide on real data: if the first drop lands inside your break-even, you've learned the trade works and can consider the next plan. If it doesn't, you've risked very little.

This is also where your overhead matters. The patients who stay produce at your full fee against the same fixed costs, so a successful drop can improve your overhead percentage even with fewer patients. Higher collections on a leaner schedule is the goal, not raw patient count.

Who should not drop a PPO?

Not every practice should go out of network, and pretending otherwise is how owners get hurt. If a single plan makes up a large share of your patient base, if your schedule isn't full, or if you're in a price-sensitive market with heavy competition, dropping a plan can do real damage. The math has to clear before the emotion does.

Be honest about your situation. A practice with open chairs needs more patients, not fewer, so shedding a plan before you've filled the schedule is backward. A new practice still building its base usually can't afford the attrition. And if one insurer dominates your local employers, that plan's patients may be genuinely hard to replace, even at a better per-patient rate.

A quick gut check before you go further. Ask yourself:

• Is my schedule full? If chairs sit empty, fix that first. Dropping a plan makes a slow schedule slower.
• How concentrated is this plan? If one plan is 40% of your patients, the risk is very different than if it's 8%.
• How loyal is my base? Long-tenured patients who value the relationship are far more likely to stay than price shoppers.
• Can I replace lost patients? Steady new-patient flow turns attrition from a threat into a manageable number.

The signs you may be ready are the opposite: a full or overbooked schedule, deep write-offs on the plan in question, a loyal patient base, and enough new-patient flow to absorb some loss. The National Institute of Dental and Craniofacial Research publishes national dental data worth reviewing, and in a market with steady demand a well-positioned practice can usually backfill some attrition. Most patients vet a practice on reputation first, and BrightLocal research shows the vast majority read reviews before choosing, so a strong reputation makes attrition easier to weather. If those conditions aren't there, the responsible answer is to wait.

How to have the conversation with patients

Lead with continuity, not insurance. When you tell patients you're leaving a plan, the message that keeps them is simple: nothing about their care changes, only the paperwork. Frame it around the relationship and the quality of care, give them the practical details in writing, and train your front desk to handle the questions calmly. The patients who frustrate easily over insurance are often the ones already frustrated by insurance phone calls in general, so a clear, human explanation goes a long way. If your front desk needs a refresher on the operational side of insurance handling, our front-desk insurance guide covers the day-to-day mechanics.

Taking a dental practice out of network is a math decision wrapped in an emotional one. Run the write-off numbers, calculate your break-even attrition, test one plan, and be honest about whether your practice is in a position to do it. Demand for routine dental care has held steady for years, so the patients are out there; the CDC publishes ongoing oral health data if you want to gauge it in your own region. The question is only whether the trade works for you.

Start by pulling your allowed amounts on your worst-paying plan this week. The number will tell you more than any amount of worrying.