Dropping a PPO: What Actually Happens to Collections
One general practice added up its PPO discounts and found they were eating more than 15% of total gross production, the equivalent of working about a month and a half a year for free, according to Dental Economics. Another practice in the same reporting dropped its networks badly and watched active patients fall from over 1,200 to under 300.
Both outcomes are real, and the distance between them is not luck. Here is the call an informed owner can argue with: if the share of a plan's patients you need to retain for collections to stay flat comes in under 70%, you should leave that plan, and the number of patients you would lose is not a reason to stay. The reason to stay is arithmetic, not attachment. Most owners never run the arithmetic, so they argue about feelings instead, and the plan keeps renting their chair time at a price they did not set.
A Month and a Half a Year, Worked for Free
Dentists have been unhappy with PPO compensation for a long time, and the unhappiness has always been about the same thing. A study of 4,582 MetLife-affiliated practices from 2002 to 2004, published in BMC Health Services Research, found average practice satisfaction with PPOs at 3.2 on a 4-point scale, and the dominant factor explaining why satisfaction varied across plans was perceived adequacy of compensation (significant at p<.05). Not claims processing. Not patient quality. Pay.
That is useful because it tells you what the conversation is actually about. When an owner says a plan "isn't worth it anymore," they are usually right about the feeling and wrong about the evidence, because the evidence they reach for is the write-off percentage. Write-off percentage measures discount. It does not measure profitability, and it does not measure what an hour of your clinical time earns. A plan with a 38% write-off can out-earn a plan with a 28% write-off, and frequently does.
The Number That Decides It
Before you drop anything, run the Break-Even Retention Test. It is one division: net collections per visit under the plan, divided by net collections per visit for the same work out of network. The result is the share of those patients you must keep for collections to stay flat. Keep more than that share and leaving wins. Keep less and you should stay and renegotiate, or stay and restructure the schedule instead.
The test works because it converts an emotional decision into a threshold you can compare against reality. And reality, in the published accounts, is more forgiving than owners expect. One practitioner writing in Dental Economics was financially prepared to lose up to 30% of PPO patients when dropping networks, and actual attrition came in well under that figure. Being prepared to lose 30% means you need to keep 70%. If your break-even retention is 62%, you have headroom. If your break-even retention is 84%, you do not, and the honest answer is to stop talking about dropping and start talking about fee schedules.
Plan B Breaks Even at 62% Retention
Work it with numbers. A single-doctor general practice collects about $1.1 million. Plan B is the second-largest payer and produced 1,450 patient visits last year at an average net collection of $320 per visit, so Plan B delivered $464,000 in collections.
For the same mix of work at the practice's full fees, with realistic patient-pay collection losses baked in, the owner nets $520 per visit out of network. Break-even retention is $320 divided by $520, or 62%.
Now run the two scenarios the owner actually faces. Keep 75% of those patients at the same visit frequency and you see 1,088 visits at $520, which is $565,760, or $101,760 more than the plan paid.
Keep only 55% and you see 798 visits at $520, which is $414,960, or $49,040 less than the plan paid.
So the entire decision lives in a 20-point band of retention. That is the part owners miss: the downside case is not catastrophic, and the upside case is six figures. A $49,040 loss on a $1.1 million practice is a bad year, not a closed practice, and it is recoverable by re-entering the network or renegotiating from a position where you have proven you will walk.
Then look at the chair. Those 1,450 Plan B visits consumed roughly 870 provider hours, so Plan B earned $533 per provider hour.
At 75% retention, the same patients fill about 653 hours and produce $866 per provider hour, and 217 provider hours come free.
If the practice refills even half of those freed hours at a conservative $700 per hour, that is another $75,950 on top of the $101,760.
We'd drop Plan B. Not because the write-off offends anyone, but because break-even sits at 62%, documented attrition in comparable exits ran better than 70% retention, and the freed hours have a second use.
What Most Owners Get Wrong: They Rank Plans by Write-Off
The specific mistake is ranking payers by write-off percentage and dropping the one with the biggest discount. Owners with good practice management software and no payer-level time data make this mistake most often, because the write-off report is one click away and the hours report does not exist.
Here is how it goes wrong. Plan C in the same practice has a 28% write-off, which looks gentle next to Plan B. Plan C nets $380 per visit, but Plan C's patient mix and preauthorization habits mean those visits average 1.1 hours of provider time, so Plan C earns $345 per provider hour.
Plan B, the plan with the ugly write-off, earns $533 per provider hour. The owner who drops by write-off drops the better payer and keeps the worse one, then cannot understand why collections fell while the schedule stayed full.
This is why we track Collections per Provider Hour by payer and treat write-off percentage as a negotiating talking point rather than a management metric. Our view: write-off percentage is the wrong metric, and any consultant who builds your PPO strategy on it is selling you a spreadsheet, not a decision.
You Are Already Losing One Patient in Four
The second thing owners get wrong is treating their current patient base as stable. It is not. National average dental patient attrition runs around 17%, and Dental Intelligence data across more than 4,000 offices put the current average closer to 25%, or one in four patients lost every year, per Dental Economics.
Sit with that. If you are a typical practice, you will lose roughly a quarter of your patients this year whether or not you touch a single network contract. You are already losing one patient in four every year; the only question is whether you get paid properly for the three who stay.
That reframes the risk. A PPO exit that costs you 25% of that plan's patients is not an unusual event in the life of your practice. It is a Tuesday, except this time the patients who leave are the ones whose visits earned $320 instead of $520, and the ones who stay pay full fee. Baseline attrition is noise you absorb every year without a plan. Exit attrition is noise you absorb once, on purpose, with a price increase attached.
How 1,200 Patients Became Fewer Than 300
None of this excuses a sloppy exit. The practice that fell from over 1,200 active patients to under 300 did not fail the arithmetic; it failed the execution, and Dental Economics attributes the collapse to how abruptly the drop was handled. A 75% loss is not a market verdict on out-of-network dentistry. It is what happens when patients learn about a change from an insurance company letter instead of from you.
The difference between the two outcomes comes down to a handful of operational choices. Drop one plan at a time, never all of them at once. Give 90 days of notice in writing and in the chair, from the people patients trust. Stay out of network while continuing to file claims and accept assignment of benefits where the plan permits it, so the patient's math changes by a copay, not by a category. Quote the actual out-of-pocket difference per visit, in dollars, before the patient has to ask. Have a membership plan priced and live on the day the letter goes out, so the patients with no other coverage have somewhere to land. And start with the plan where the break-even number is lowest, not the plan you resent most.
The Chair Hours Are the Real Prize
The freed hours matter more than most exit plans admit, and that is where capacity comes in. Across the Practice Market Index, our dataset built from 925 dental practice listings, collections per operatory runs a median of $200,000, with the middle half between $146,875 and $268,708 (n=643). Those are practices on the asking side of the market, not a cross-section of all practices, so read them as a picture of what gets listed. Even so, the spread is wide enough to make the point: operatories do very different amounts of work, and a room that produces $147,000 a year is not short of rooms.
If your freed chair hours sit empty, your exit math is the conservative scenario and nothing more. If you have a hygiene column you have been meaning to add, a second operatory running half days, or a waitlist for restorative, the freed hours are where the real gain lives. Decide which one is true for your practice before you send the letter, because the answer changes how aggressive you can be.
Five Days to a Real Number
Pull net collections and provider hours by payer for the last 12 months, and compute Collections per Provider Hour for every plan you are in. Run the Break-Even Retention Test on your two worst plans and write both numbers on one page. If either break-even figure sits under 70%, start the exit on that plan alone, with 90 days of notice, a membership plan priced, and a per-visit dollar comparison your front desk can say out loud. If both sit above 80%, skip the drama and take your Collections per Provider Hour numbers into a fee schedule negotiation instead.
We will keep watching one thing in particular: whether out-of-network Collections per Provider Hour holds up at the 18-month mark, after the goodwill of long-time patients has been spent and new patient flow has to come from somewhere other than a network directory. If exits start showing a hygiene recall collapse in year two, we will revise the 70% threshold upward and say so. Until then, the number that should decide your contracts is per hour, not per cent.
If you want to see where your own plans sit, our free PPO-exit calculator will take your net collections per visit under each plan and your full-fee equivalent and hand you your break-even retention in about two minutes. Run your own numbers before your next contract renewal lands, so the decision is yours and not the plan's.
