Dental Practice Due Diligence:
The Complete Buyer's Checklist

Buying a dental practice is one of the most significant financial decisions of your career. The asking price might look fair, the location might be ideal, and the seller might be telling you everything you want to hear — but none of that matters until you've done the work to verify what's actually true. That's what due diligence is: the structured process of confirming that the practice you're about to pay for is the practice you believe it to be.

Most buyers approach due diligence as a formality — a box to check between signing the letter of intent and closing. That's a mistake that can cost you hundreds of thousands of dollars. The buyers who come out ahead are the ones who treat due diligence as a separate phase of the acquisition process, with its own discipline, its own team of advisors, and its own timeline. They're the ones who find the problems before they become their problems.

This guide walks through every category of dental practice due diligence in the order you should approach it. We've organized it as a working checklist — the kind you can bring into a due diligence meeting and use as a framework for your conversations with your attorney, your CPA, and the selling dentist. If something doesn't check out, you'll know exactly where the gap is and what questions to ask next.

1. Financial Due Diligence

Financial due diligence is where you verify the numbers that justified the asking price. Every dental practice valuation rests on adjusted EBITDA — the true owner earnings after stripping out personal expenses, one-time costs, and non-cash items. Your job in this phase is to reconstruct that number from primary source documents, not from a broker's summary sheet.

The most important documents are the last three years of tax returns — both the business entity's returns and the owner's personal returns if the practice is a sole proprietorship or S-corp. Tax returns are harder to manipulate than profit-and-loss statements because they carry legal liability. Collect them early and compare them year-over-year. A practice whose collections have grown consistently is a fundamentally different asset than one that peaked two years ago and has been declining since.

Accounts receivable (AR) requires its own scrutiny. A healthy AR report is aging correctly — the majority of outstanding balances should be under 90 days. Large buckets in the 120+ day range suggest billing problems, insurance disputes, or patient collection issues that will become your problem at closing. Ask for an AR aging report by payer type (insurance vs. patient balance) and look carefully at the write-off rate. A practice writing off more than 5–8% of gross production is doing something wrong, either in treatment planning, case acceptance, or collections.

Financial Due Diligence Checklist

• 3 years of federal tax returns (business entity)
• 3 years of profit and loss statements, month-by-month
• Year-to-date P&L for the current year
• Current accounts receivable aging report (by payer type)
• Production and collection reports for the last 36 months
• List of all personal expenses run through the practice
• Current business bank statements (last 6 months)
• Any outstanding business loans or lines of credit
• Equipment loan balances and payoff amounts
• Any pending or historical insurance audits

2. Legal Due Diligence

Legal due diligence is about understanding what obligations you're acquiring — and what liabilities might follow you through the closing. Dental practices are more legally complex than most small businesses because they sit at the intersection of healthcare regulation, professional licensing, employment law, and commercial real estate. Each of those domains has its own set of documents to review and risks to assess.

The lease is often the most consequential legal document in the entire transaction. A practice with strong financials but a lease expiring in 18 months with no renewal option is a fundamentally compromised investment — you have no guarantee you'll be able to keep the practice where it is. Review the lease term, renewal options, rent escalation clauses, assignment provisions (many leases require landlord consent to transfer), and any personal guarantee requirements. Have your attorney negotiate favorable assignment language before you close.

Malpractice history is a sensitive but critical area. Ask for the practice's malpractice insurance declarations for the past five years, any claims history, and whether the selling dentist has ever been the subject of a state dental board complaint. A single resolved claim may not be disqualifying; a pattern of claims or an open board investigation is a material issue. If you're buying the entity (rather than just the assets), you may inherit existing legal exposure — which is one reason most dental acquisitions are structured as asset purchases.

Legal Due Diligence Checklist

• Full copy of the office lease, including all amendments
• Lease assignment or landlord consent provisions
• Any subleases or shared-space arrangements
• State dental license (current and in good standing)
• DEA registration and controlled substance logs
• Malpractice insurance certificate and claims history
• State dental board complaint history
• All current payor contracts (insurance credentialing)
• Employment agreements and non-compete clauses with staff
• Any outstanding liens, judgments, or pending litigation
• HIPAA compliance documentation and privacy officer designation
• OSHA compliance records (bloodborne pathogen training, exposure logs)

3. Operational Due Diligence

Operational due diligence is where you assess whether the practice actually runs the way the financials suggest it does. A practice can have strong revenue numbers and still be operationally fragile — over-dependent on a single provider, running on outdated software, staffed by people who only stayed because they liked the seller, or relying on equipment that needs immediate replacement. These are the issues that don't show up on the P&L but that will define your first year of ownership.

Staff is the single most important operational factor in any dental acquisition. Patients often have relationships with front desk coordinators, dental hygienists, and assistants that predate their relationship with the dentist. If key staff leave at closing, you will lose patients — and you'll be managing a recruitment crisis at the worst possible time. Ask for an org chart, tenure for each employee, salary and benefits information, and whether the seller has had conversations with the team about the transition. Staff who feel blindsided or undervalued are staff who update their resumes.

Practice management software is another area that often surprises buyers. If the practice is running on an outdated or niche platform — one that hasn't been updated in years or that you've never used — budget for a conversion. Data migrations are time-consuming, error-prone, and expensive, and they create disruption for patients and staff alike. If possible, request a live demo of the current system before you close so you understand the scope of what you're inheriting.

Operational Due Diligence Checklist

• Staff roster with tenure, role, salary, and hours
• Employee benefit packages (health insurance, 401k, PTO)
• Associate dentist agreements (if applicable)
• Practice management software platform and version
• Imaging software and digital radiograph system status
• Full equipment inventory with age and maintenance history
• Current service contracts and warranties
• Active insurance plan participation and fee schedules
• Number of active patients (seen in last 18 months)
• Patient recall rate and hygiene reappointment percentage
• New patient intake process and average monthly new patients
• Referral sources (internal, external, specialist relationships)

4. Clinical Due Diligence

Clinical due diligence is the phase that distinguishes dental practice acquisitions from generic business acquisitions. You're buying a healthcare practice, and the clinical standards of the exiting dentist will shape what you inherit — including patient expectations, treatment backlog, documented care plans, and the hygiene department's culture. This is also the area where professional liability risk is most concentrated.

A chart audit is the foundation of clinical due diligence. Request access to a representative sample of patient records — typically 50 to 100 charts across active, inactive, and long-term patients — and review them with a specific eye toward documentation quality, treatment planning completeness, and whether recommended work was completed or declined. Underdocumented charts are a liability risk; a large backlog of diagnosed-but-unscheduled treatment is actually an opportunity if it's communicated properly in the transition.

The hygiene department deserves its own analysis. In a healthy general practice, hygiene production should represent 30–35% of total collections. Hygienists who have been with the practice for years and who schedule their own patients for recall appointments are an enormous asset. Hygienists who rely entirely on the front desk to reschedule, who run behind consistently, or who have high turnover in their patient panels are a sign of a system that needs work.

Clinical Due Diligence Checklist

• Sample chart audit (50–100 records minimum)
• Documentation quality and consistency review
• Unscheduled treatment report (diagnosed but not booked)
• Treatment plan acceptance rate
• Hygiene production as a percentage of total collections
• Hygiene reappointment and cancellation rates
• Periodontal protocol documentation and consistency
• Radiograph frequency and quality assurance records
• Infection control protocols and sterilization logs
• Dental board inspection history (any citations or corrective orders)

5. Marketing and Reputation Due Diligence

The reputation of a dental practice is a tangible financial asset — and it can be destroyed faster than it was built. Before you acquire a practice, you need to understand what the community knows about it, what patients say about it online, and whether the new patient flow is something you can sustain or whether it's driven entirely by the outgoing dentist's personal relationships and referral network.

Start with a straightforward Google search of the practice name. Read every review — not just the aggregate rating, but the substance of individual reviews going back several years. Look for patterns: is there a spike in negative reviews at a particular period that corresponds to a staffing change, an insurance plan drop, or a billing problem? Negative reviews about wait times, billing surprises, or rude front-desk staff signal operational issues you'll inherit. Negative reviews about the dentist personally may actually work in your favor if you plan to introduce yourself to the patient base as a change for the better.

The practice's website and online presence tell you about its current marketing infrastructure. A practice with a modern, well-maintained website, active Google Business Profile, and consistent social media presence has built a digital footprint that will keep generating new patients after the transition. A practice with a website that hasn't been updated in four years and no Google reviews management strategy will require meaningful investment in digital marketing before the new patient pipeline stabilizes.

Marketing and Reputation Due Diligence Checklist

• Google Business Profile: rating, review volume, response cadence
• Yelp, Healthgrades, Zocdoc, and Vitals profile review
• Average monthly new patients (last 24 months)
• Primary new patient sources (referral, web, insurance directory, walk-in)
• Website traffic and SEO position for key local search terms
• Active social media accounts and engagement
• Email marketing and patient communication cadence
• Current monthly marketing spend and ROI tracking
• Any active or lapsed insurance plan memberships affecting visibility
• Patient satisfaction surveys or NPS data

Common Red Flags to Watch For

Even after a thorough review of each category above, certain patterns warrant extra scrutiny or may be deal-breakers regardless of how the rest of the practice looks. These are the findings that most commonly surface problems that weren't visible in the initial marketing materials or the broker's summary.

Putting It Together: How to Run Your Due Diligence Process

Due diligence is not a checklist you hand to your attorney and wait for results. It's a coordinated effort that requires your active involvement across multiple workstreams. You need a CPA who has done dental practice work before, an attorney who specializes in dental or healthcare acquisitions, and a practice consultant if the practice is large or complex. Each of them is working in their lane, and you're the one synthesizing what they find.

Set a clear timeline at the outset. The letter of intent typically gives you 45 to 90 days for due diligence, and that window is negotiable. Experienced buyers request 75 to 90 days to allow time for document collection, analysis, follow-up questions, and the resolution of issues that surface mid-process. Don't let a seller or broker pressure you to rush the timeline — if the deal is good, it will still be good after proper review.

Maintain a shared document repository for all due diligence materials. Every document you receive from the seller should be saved, dated, and logged. This serves two purposes: it creates a clean record of what was represented to you before closing (which matters for indemnification if problems surface later), and it gives your advisors a single place to access materials without back-and-forth. Use a simple folder structure organized by the five categories in this guide.

When issues surface — and they will — approach them as negotiation opportunities before they become deal-breakers. A lease that needs a new assignment clause is something your attorney can negotiate with the landlord. Equipment that needs replacement can be reflected in a purchase price reduction or a seller credit at closing. A staffing concern can be addressed with retention bonuses funded through the transaction. The goal of due diligence isn't to find reasons not to buy; it's to ensure that what you're paying is accurate given what you've actually verified.

The practices that become excellent acquisitions are rarely the ones that look perfect on paper. They're the ones that buyers understood deeply before they closed — where the risks were known, priced in, and managed from day one. That level of understanding doesn't come from taking the seller's word for it. It comes from doing the work.