The 12 Numbers That Tell You If Your Practice Is Healthy

Two practices in the same zip code can both collect $1.1 million, and only one of them is worth buying. The difference usually isn't the marketing spend or the scanner in room three. It's about 30 percentage points in a number most owners have never pulled: how many hygiene patients leave with the next appointment already on the books. Practices collecting around $500,000 a year reappoint roughly 60% of hygiene patients, while practices over $1,000,000 reappoint about 90%, according to DentistryIQ. Those 30 points are worth more than any marketing contract you will ever sign.

Our view: overhead percentage and new patient count, the two numbers dentistry treats as vital signs, are the two least useful figures on a practice dashboard. An owner who tracked nothing but hygiene reappointment rate, the share of receivables aged past 60 days, and take-home per clinical day would make better decisions than an owner who reads the full monthly report cover to cover. That's an argument, and plenty of consultants will take the other side. Here are the 12 numbers that actually matter, in the order we'd defend them.

The Three That Would Survive a Fire

If your practice management software deleted every report but three tomorrow, keep these.

Number one: hygiene reappointment rate, measured as the percentage of hygiene patients who leave the building with a date, not a "we'll call you." Number two: percentage of accounts receivable aged past 60 days, which Dental Economics caps at 20% for a healthy practice. Number three: owner take-home per clinical day, which almost nobody calculates because it is the one number that can make a successful-looking year feel like a bad trade.

Each of the three is a leading indicator. Reappointment rate tells you what next quarter's schedule looks like before next quarter exists. Aged AR tells you whether your front office has an insurance problem or a courage problem. Take-home per clinical day tells you whether the whole arrangement is worth your Tuesday. The other nine numbers are diagnostics. They explain. They don't predict.

Why 62% Overhead Can Mean You Are Underpaid

Overhead percentage is the most-quoted and least-decisive number in dentistry, because it is blind to scale and easy to flatter. Reclassify your own compensation, pay an associate on a different split, move lab fees between categories, and the percentage moves without a single thing changing clinically.

Run two practices side by side. Practice A collects $850,000 at 60% overhead, so the owner clears $340,000, and works 220 clinical days to do it, which is $1,545 a day. Practice B collects $1.6 million at 68% overhead, a number that would get it scolded in any study club, but the owner clears $512,000 while working 150 clinical days, because an associate and two hygienists carry the rest. That's $3,413 a day.

Overhead percentage says Practice A is the healthier business. The owner's calendar and bank account say Practice B is more than twice as good. We'd take B without a second meeting.

For the benchmark on the other side of that calculation: the U.S. Bureau of Labor Statistics puts the median annual wage for dentists at $176,110, or $84.67 an hour, as of May 2025, across 161,400 jobs, with 6% projected employment growth from 2025 to 2035. An owner working four days a week for 46 weeks puts in 184 clinical days, so matching the median takes $957 a day of take-home. If ownership isn't clearing a healthy multiple of that, the equity is doing the work the income should be doing, and equity only pays once.

The 540 Appointments You Didn't Book

Here's the scenario we'd put in front of any owner who thinks reappointment rate is a front-desk housekeeping metric.

Take a practice that sees 1,800 hygiene patients a year. At a 60% reappointment rate, 1,080 of them leave with a booked appointment. At 90%, that's 1,620, a difference of 540 visits a year.

Value each of those hygiene visits at $190 of hygiene production and the gap is $102,600. Assume a quarter of those visits surface restorative work, which is 135 cases. At an average of $600 a case, that's another $81,000. Total additional production of $183,600. At the 99% collection percentage Dental Economics says a healthy practice should hit over 12 months, you collect $181,764.

Now the costs, because this is not free money. Those 540 extra hygiene hours at a loaded $55 an hour cost $29,700. Supplies and sterilization at $10 a visit add $5,400. Lab at 12% of the restorative work adds $9,720. Total incremental cost of $44,820, leaving $136,944 of additional profit. Rent didn't change. The front desk salary didn't change. The sign out front didn't change.

Compare that to buying the same production with new patients. At $900 of first-year production per new patient, you'd need 204 of them. At a $250 acquisition cost, that's $51,000 of marketing spend to replace revenue you already had standing in your hallway. And those 204 people need chairs, which the 540 unbooked patients were going to fill for nothing.

This is why we rank new patient count near the bottom. New patients are a replacement budget for attrition. If reappointment is leaking, marketing is a pump on a hull breach.

Nine More Numbers, and What Each One Is Actually Telling You

• Collection percentage. Target 99% over a rolling 12 months, per Dental Economics. Below 97% and you are not running a collections problem, you are running a fee-schedule and write-off problem wearing a collections costume.
• AR to average monthly production. Should sit at 1.0. At 1.6 you have financed your payers' convenience with your own working capital.
• Collected dollars per chair hour. The density number. It tells you whether you need more patients or a better schedule, and the answer is usually the schedule.
• Unscheduled treatment dollars, aged. Not the total, the age. Diagnosed work sitting 90 days is a diagnosis your patient did not believe.
• Active patient count, net of attrition. Count patients seen in the last 18 months this year against the same number last year. New patient count without this is a vanity figure.
• Hygiene share of total production. Low is a recall problem. Very high often means the doctor schedule has gone soft and nobody has said it out loud.
• Open chair hours per week. The cheapest production in the building is the hour you already paid rent and wages for.
• Collections growth versus market growth. National dental care expenditures hit $189 billion in 2024, up 3.6% inflation-adjusted, with consumer dental spending up 4% year over year as of January 2026, per the ADA Health Policy Institute. If you grew 3% last year, you did not grow. You drifted with the tide and told yourself a story.
• Owner-dependent share of production. The percentage of collections that walks out the door the day you stop producing. This is the number that sets your sale price, and most owners meet it for the first time in a buyer's diligence spreadsheet.

What Most Owners Get Wrong: Reading Production When the Business Runs on Chair Hours

The specific mistake belongs to a specific person: the owner 10 to 20 years in, schedule visibly full, who opens the monthly report and reads one line, production, and judges the month on whether it beat last month. We see it constantly in practices between $900,000 and $1.6 million, usually single-location, usually with one associate or a second hygiene chair added in the last five years.

Production is a number you declare. Collected dollars per chair hour is a number the business reports back to you. Take that same $1.1 million practice with three operatories running seven hours a day, four days a week, 46 weeks a year. That's 3,864 available chair hours. At $1.1 million collected, you are getting $285 a chair hour. Add a fourth operatory and run the same volume and that figure drops to $214, which is the arithmetic of why the expansion that was supposed to fix everything made the overhead percentage worse.

The owner who reads production sees a strong month. The owner who reads collected dollars per chair hour sees that two hygiene columns and 11 doctor hours a week were being paid for and not sold. Same practice. One of them knows where the money is.

The Number That Only Shows Up at 68

There are 205,088 professionally active dentists in the U.S. as of 2025, about 60.0 per 100,000 people, and the average dentist retirement age has climbed to 68.7 years in 2024 from 64.7 in 2001, per the ADA Health Policy Institute. Four extra years of practicing is not a lifestyle trend. For a meaningful share of owners, it is a valuation shortfall being paid off in clinical days.

That is what the owner-dependent production share buys you: optionality. A practice where 85% of collections depend on the owner's hands is a job with a lease attached. A practice where the figure is 45% is an asset that can be sold at a real multiple, or kept and staffed. Nobody buys a practice because the overhead was 58%. They buy the recall list and the part of production that survives your retirement party.

What Would Change Our Mind

We hold this position with one open question. If a practice runs a genuinely hard payer mix, heavy PPO with write-offs north of 35%, then overhead percentage stops being vanity and starts being a survival signal, because the gap between production and collection is structural rather than behavioral. We're watching whether PPO-heavy practices that fix reappointment actually convert it into take-home, or whether the recovered production just feeds the write-off. That's the next thing we want hard numbers on, and it would soften our call on overhead.

Do This Before Friday

Pull three numbers this week and write them on one index card: hygiene reappointment rate for the last 90 days, the percentage of your AR sitting past 60 days, and your take-home divided by the clinical days you personally worked last year. If reappointment is under 85%, make pre-booking a condition of the hygiene appointment ending, not a request at the end of it. If AR past 60 days clears 20%, pick the ten largest aged claims and have someone phone the payer on each one on Thursday. Post the index card where you see it before your first patient, and update it monthly.

If you want the second half of that calculation done properly, our overhead calculator will take your collections, your payroll, your lab and your occupancy and give you both the percentage and the figure that actually matters, your profit per clinical day, so you can see which of the two is telling you the truth about last year. Run your own numbers and see where your practice lands against the benchmarks above.