What Dental Practice Due Diligence Actually Covers (2026)

Dental practice acquisition due diligence is the investigation a buyer runs between signing a letter of intent and closing on the purchase. It covers five core areas: the financials, the patient base, the lease, the equipment, and the team. Most acquisitions take 60 to 90 days from letter of intent to closing. Every request you make in that window serves one purpose: confirming that the practice you are buying matches the practice you were told about.

I have sat across from a lot of associate dentists who were a few weeks from closing on a practice they should not have bought. In almost every case the deal looked fine on paper. Collections were healthy, the location made sense, the seller seemed like a decent person, and the summary from the broker told a story that held together. What decided whether they would be glad they bought it was sitting in places that summary never touched.

Below is what due diligence on a dental practice covers, what to request in each area, and the findings that should make you walk away. It also covers two areas buyers often skip: insurance credentialing and whether the practice fits you. It comes from the questions our team works through with clients, drawn from more than 900 startup and acquisition consulting engagements.

The short version

• Ask for 36 months of collections, month by month, plus accounts receivable aging. Production figures alone won't tell you what the practice earns.

• Count active patients (seen within the last 18 months), then review new patients per month over the last 24 months. That second number predicts what the practice looks like three years out better than anything else in the file.

• Get three things from the landlord in writing: the lease assigns to you on the same terms, the remaining term, and the renewal options. Aim for five years of term or a clear path to it.

• Price the equipment replacements the selling doctor deferred and add them to the purchase price.

• Plan for the credentialing gap. In-network contracts usually need to be set up under you, and the wait for your first in-network payment can run 60 to 120 days.

• Bring in a dental-specific CPA, a dental-specific attorney, and a lender who does practice volume before you sign anything.

• Confirm the practice fits the one you want to own before you judge whether the deal is good.

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Dental practice acquisition due diligence checklist at a glance

Every claim a seller or broker makes deserves a document behind it. Use this table to match what you hear with what to request, and to see where the real risk tends to sit.

Want this as something you can work through on a live deal? The free Acquisition Hidden Risk Checklist covers the seven categories buyers most often underestimate. It's free, goes straight to your inbox, and is worth reading before your next conversation with a broker or seller.

What is due diligence on a dental practice?

Due diligence on a dental practice is the verification work that happens after the letter of intent and before closing. You check each area against what the seller and broker presented.

The early materials in a sale are built to generate interest. A broker package usually includes collections, a patient count, the location, and a few photos of the operatories. All of it is real information. None of it answers the questions that decide whether the purchase works: how much of the production got collected, how many of those charts belong to people who still come in, whether the lease transfers, and how much life is left in the compressor.

Due diligence is the part where you go and look. In our 13-stage acquisition process it sits in Stage 4, Practice Analysis and Negotiations, with financing running alongside it in Stage 5 so neither one holds up the other.

How do you know a practice fits your vision?

A practice can pass every financial test and still be the wrong one for you, so check the fit before you check the numbers. Look at the commute, the patient base, the reputation the seller built, the kind of dentistry the practice is known for, and the culture of the team. Then ask whether each one matches the practice you want to be running five years from now.

When an associate tells me they found a practice they love, my answer is usually, "Amazing, let's see how it fits your vision." A 45-minute commute sounds manageable before you own the place. Three years in, with a family and a full schedule, it's often the first thing an owner says they would change. The same goes for a reputation you inherited and didn't choose. If the patients the practice attracts today don't match the dentistry you want to do, you start ownership working against what you bought.

In our experience, dentists who skip this step rarely overpay. More often they buy a fairly priced practice and spend years trying to turn it into something it was never set up to be.

How long does dental practice due diligence take?

Most dental practice acquisitions run 60 to 90 days from signed letter of intent to closing, and the lender usually sets that pace. Nearly every buyer finances the purchase, and the bank's underwriting can't begin until it has your materials, so your diligence and the bank's review run side by side. That's why ninety days feels tight once you're inside it.

You will feel pressure to compress the timeline. The seller wants to close, the broker wants to close, and there is often another buyer in the background, or at least the suggestion of one. I have never seen a buyer regret taking an extra three weeks. I have watched plenty of buyers regret the thing they skipped in week six because they felt rushed. A seller who refuses to give you time to do this properly has already told you something important.

What should the financials show in a dental practice acquisition?

The financials need to show three things: what the practice collected, where those collections came from, and how reliably the office gets paid.

Production versus collections

Production is the dentistry the practice performed. Collections are the money that came in. Every practice has a gap between the two, and the size of that gap tells you how well the office runs its billing. Say a seller reports $1.1 million in production and the collections come back at $850,000. That $250,000 is dentistry the office performs every year and never gets paid for. In practice, you are looking at an $850,000 practice with a billing problem attached, and if you buy it, you inherit the billing problem along with the team that created it.

Ask for 36 months of collections, broken out month by month. Tax returns and annual totals smooth over the months where something went wrong, and those months are exactly what you need to see.

Accounts receivable aging

AR aging shows money the practice has earned and not yet collected, sorted by how old it is. Focus on the bucket past 90 days. A healthy practice generally keeps that under 10 to 15 percent of total receivables. A number well above that points to broken billing or a patient base that struggles to pay. The first is a staffing and systems fix. The second limits what the practice can ever collect, no matter who runs the front desk.

Concentration by procedure, payer, and provider

Ask for production by category, by provider, and by payer. If a third or more of collections comes from one procedure type, one insurance plan, or one referral relationship, part of your purchase price is sitting on something that can disappear.

Hygiene deserves its own look. In a healthy general practice, hygiene usually runs about a quarter to a third of collections. Meaningfully lower usually means recall has been neglected, which is fixable and takes roughly 18 months to rebuild. Meaningfully higher can mean the doctor has slowed down and the hygienists are carrying the practice, which changes what you are buying.

How much came from the selling doctor

Then ask the question buyers forget: how much of the collections did the selling doctor produce personally? If the seller produced 80 percent of it and plans to leave within 90 days of closing, a large share of what you are paying for walks out the door with him.

How do you verify the patient base when buying a dental practice?

You verify the patient base by asking for active patient counts instead of chart counts, and by reviewing new patients per month over the last 24 months.

A chart is a file. An active patient is someone who has been seen within the last 18 months and plans to come back. The chart count is often close to double the active count. A seller who quotes 2,800 patients is usually answering a different question than the one you meant to ask. Have the practice management software run active patients at 12 and 18 months and compare both to what you were told.

New patient flow is the number I care about most in the entire transaction. Collections describe what the practice has been, and new patients per month describe what it is becoming. A practice with 1,400 active patients and 12 new patients a month is stable. The same practice bringing in three new patients a month is shrinking, and buying it means paying for the last profitable year of a declining asset.

Nearly every other problem on this list responds to time and attention. A practice that has stopped attracting patients is a much harder repair, and it's the one detail a seller has the most reason to leave vague.

What does the lease review cover?

The lease review covers three things, and you need all three from the landlord in writing: confirmation that the lease assigns to you on the same terms, how much term remains, and what renewal options exist and what they cost.

In our experience, the lease damages more acquisitions than the purchase price does, and very few buyers see it coming. Picture closing on a practice with 14 months left on the lease and no renewal option. You now own a business that has to operate somewhere, the landlord knows it, and every bit of leverage in the next negotiation belongs to him.

Aim for five years of remaining term, or a clear path to it. If the term is shorter, the lease negotiation becomes part of the acquisition and needs to be settled before you sign the purchase agreement, while you still have leverage. If the seller owns the building, treat the real estate as its own transaction with its own financing and its own diligence, rather than a footnote to the practice purchase.

How do you evaluate the equipment and the team?

Evaluate the equipment by walking the office with someone who knows dental equipment and asking the age of everything. Evaluate the team by asking the seller for tenure, compensation, and what he expects each person to do after the sale.

Equipment and deferred spending

Equipment is the most reliably overlooked number in an acquisition. In the last three to five years before a sale, most selling doctors stop investing. Sensors age, the compressor limps along, the software stays two versions behind, and the operatory that never got finished stays that way. Deferred spending is invisible on a profit and loss statement, so none of it shows up as a problem in the financials. It shows up in your first year as a capital expense you didn't budget for. I have seen deferred maintenance run past $100,000 on a practice that appraised cleanly.

Ask for the age and service history of every chair and delivery unit, the compressor, the vacuum, the sterilizer, and the imaging. Ask when the practice last replaced anything significant. Then price the replacements and add that figure to the purchase price, because the combined number is what the practice costs you.

The team

You usually can't talk to the team before closing. Most sellers keep a sale confidential until it's done, and that's reasonable. What you can do is request tenure and compensation for every employee and ask the seller directly what he thinks each person will do after the sale.

Then discount his answer a little. Sellers tend to be optimistic about their teams, which is human. Budget for replacing two positions in your first year and treat it as a bonus if you don't need to. Keep in mind that the hygienist who has seen the same families for twelve years is part of what you are buying, whether or not anyone put a number on her.

How does insurance credentialing affect a dental practice acquisition?

Insurance credentialing affects your cash flow from the day you close. In most acquisitions the seller's in-network contracts don't simply carry over to you, and the window between closing and your first in-network payment can run 60 to 120 days, sometimes longer.

For a practice that bills mostly through insurance, that can mean two to four months of payroll, rent, and loan payments with far less coming in. During diligence, ask the seller for a list of every payer contract and fee schedule. Start your own credentialing as early as the purchase agreement allows, and keep enough working capital to cover the gap. In our process credentialing gets its own stage, Stage 7, because it is one of the longest lead-time items in any acquisition.

What findings should end a dental practice acquisition?

Four findings should end a transaction rather than reprice it:

1. New patient flow that has declined for two years with no explanation. If nobody can tell you why the practice stopped attracting patients, assume the reason is still there.

2. A lease that won't assign, or a landlord who won't commit in writing. This goes beyond price, because it decides whether the practice can keep operating where it is.

3. Collections that don't match the story. If the financials and the practice management software disagree with each other, stop and find out why before you go any further.

4. A seller who won't hand over the data. Sometimes that's disorganization and sometimes it isn't, and from the outside the two look identical. Either way, you can't buy what you aren't allowed to examine.

Most findings fall short of deal breakers. Deferred equipment, a billing problem, and weak recall are all repricing conversations. Ask yourself two questions: is the problem fixable with work you know how to do, and does the price now reflect that work? If both answers are yes, keep going.

Who should be on your due diligence team?

You want three advisors involved before you sign anything, and none of them should be the broker.

• A dental-specific CPA, who reviews the financials and tells you what the practice is worth rather than what it's listed at.

• A dental-specific attorney, who handles the purchase agreement, the lease assignment, and the non-compete.

• A lender who does practice volume. A local commercial lender who has never underwritten a dental practice will slow you down and misprice the risk.

Brokers serve a real function. They bring practices to market, keep transactions moving, and connect a lot of sellers with buyers who would never have found each other otherwise. Their compensation also depends on the deal closing, so know whose interest each person in the room represents.

At Ideal Practices we sit on the buyer's side of that table. We don't broker deals or earn commissions on what you buy. Our dental practice acquisition consulting is built to help you decide whether a practice fits your vision before your money is committed.

"I thought I was just buying a practice. What I got was a partner who helped me become a confident business owner. From the due diligence to my team training and KPI tracking, Ideal Practices helped me step fully into ownership."
Dr. A.L., Acquisition Client

Should you buy a practice or start one?

Due diligence tells you whether a specific practice is worth buying. A bigger question sits behind it, which is whether buying fits you at all. For comparison, starting a practice from scratch runs $750,000 to $800,000 and produces no revenue on day one. Buying generally costs more and produces revenue in month one. Each path carries real risk, and they fail for different reasons.

What I want to avoid is a dentist choosing between them because one happened to show up first. Our process runs the same thirteen stages either way, and if the right practice never turns up, clients can move to the startup track at no additional cost.

Frequently asked questions about dental practice due diligence

How many years of financials should I request?

Request 36 months of collections, month by month, along with current accounts receivable aging and production by category, provider, and payer. Tax returns on their own leave out the monthly detail you need.

What counts as an active patient?

An active patient is someone seen within the last 18 months who intends to return. Ask the practice for active counts at both 12 and 18 months and compare them to the chart count you were given.

Can I talk to the staff before closing?

Usually not, since most sellers keep the sale confidential until closing. Request tenure and compensation for every employee, ask the seller what he expects each person to do after the sale, and budget for some turnover in year one.

Is the broker my advisor?

Brokers move transactions forward and are typically paid when the deal closes. Your advisors should be a dental-specific CPA, a dental-specific attorney, and a practice lender who work for you.

Before you sign anything

If you're evaluating a practice right now, download the free Acquisition Hidden Risk Checklist and go through it before your next due diligence conversation. It's free and takes about 30 seconds to request. Once you're emotionally committed to a specific practice, these items get much harder to see clearly.

If you're still deciding whether buying or starting fits your situation, book an Ownership Clarity Call. It's a free call with one of our Strategic Advisors. You'll talk through where you are and what you're weighing, and leave knowing which path fits your situation and what the right next step is.