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Is Someone Stealing From Your Practice? What a Dental Fraud Investigator Knows That You Don’t

Here’s the statistic to sit with: about 70 percent of dentists will be embezzled at some point in their careers. The average thief takes more than $100,000 before they’re caught. And the person doing it is almost always someone the doctor trusts completely — which is precisely why it works.

David Harris has spent 35 years on the other side of that trust. He’s the CEO of Prosperident, the dental-only forensic investigation firm — 25 investigators, endorsed by the Michigan Dental Association among seven state associations — and his entry into the field reads like a crime novel. In 1989, a dentist friend suspected his front-desk person was stealing. Harris, an ex-Army investigator between jobs, went over that night and found what the trade calls her cheat book — a written log of the thefts — taped under a desk drawer. He helped fire her the next morning. Two weeks later he walked up to his own dentist’s office and saw, through the glass, the same woman sitting at the front desk. The panicked doctor inside became his first client, and a career was born.

We had him on the Dentelligentsia podcast. Fair warning: this one is scary. It’s supposed to be.

The steal and the conceal

Harris splits every embezzlement into two parts: the steal — how your money becomes their money — and the conceal — everything done afterward to hide it. The steal is fleeting and nearly impossible to observe. The conceal is persistent, which is why it’s what investigators hunt.

The stealing itself has evolved with the money. Cash was always the first choice, but cash has collapsed from 10-12 percent of collections when Harris started to under 2 percent in many practices today. So thieves adapted: checks with someone else’s name on them get cashed somewhere every week; creative employees find ways into credit card payments; and the growth area is redirected electronic funds — convincing an insurance company to deposit the doctor’s money into the thief’s account. “In general,” Harris said, “technology is the embezzler’s best friend.”

Who does it? Two drivers, in his experience: financial desperation, and ego — the belief that the world has under-rewarded them, collected in unauthorized installments. Which is why his deepest point isn’t about software at all. It’s about how humans handle trust: we size someone up once, file the verdict away, and never revisit it. “Somebody who was trustworthy three years ago — is something different in their circumstances now? That’s a question people don’t ask themselves. And with people who handle your money, you need to.”

Fifteen minutes a month: the articulation check

The prevention section of this conversation is worth more than most CE courses, so here it is in order.

Every day: read your day-end report from the practice management software and ask two questions — is this consistent with what I remember happening today, and does it make sense? Don’t try to tie daily collections to daily bank deposits; timing differences will drive you mad. Reconcile collections to deposits monthly, where the noise self-resolves.

Every month, the check almost nobody performs — Harris calls it articulation. If the practice was open 17 days, take your 17 day-end reports in one hand and the month-end summary in the other. The totals for fees, adjustments, and payments should match exactly. If they don’t, someone came in on a Saturday or stayed late to do things in the software they didn’t want you to see. Fifteen minutes, once a month, and everything that happened is guaranteed to have been on a report you actually looked at. The week we spoke, a dentist had called him about adjustments that all mysteriously ran on Sundays. “Bingo,” Harris said. “That’s somebody trying to hide something from you. Now let’s find out what.”

Behind both habits sits one structural rule: divide duties so no single person can both steal and conceal. Forcing a would-be thief to recruit an accomplice is itself a powerful deterrent — collusion is rare, because “Nick, I want to steal from our boss, but I need your help” is a very risky sentence to say out loud.

And one line from his team worth memorizing, because it describes the early symptoms: “One of the first casualties of embezzlement is transparency.” The receivables report you stopped seeing. The reports that now only come filtered. Sometimes that’s theft; sometimes it’s just that stealing is time-consuming and the day job suffers. Either way, opacity is the tell.

What NOT to do when your gut says something’s wrong

This may be the most important section for anyone already uneasy. Do not confront. Do not hint. Do not ask your office manager to explain the discrepancy — she’s had far longer to prepare her answer than you’ve had to form your question, and “there’s something wrong with the software” is where that conversation dies.

The false-positive case is bad enough: telegraph suspicion at an innocent employee and you’ve wrecked trust with a good person in the hardest hiring market in memory. Harris’s data says 25 to 30 percent of the doctors who call him are wrong, and he considers them the luckiest callers he gets. The true-positive case is worse: a thief who believes they’re caught becomes desperate, and desperate people do desperate things — including, in real cases, burning the practice down. He told us about a Maryland dentist, beaten to death in his own office by an office manager and her accomplice when her theft was about to surface. The amount she’d stolen to that point was $177,000. Several lives ended or ruined, over that.

So the protocol is simple: suspect quietly, call experts immediately. Prosperident’s investigations are built around covertness — they clone the practice software onto their own servers and run the analysis on the frozen copy, looking for roughly 25 known patterns, without staff ever knowing an investigation exists. And don’t substitute the well-intentioned dabbler: your CPA, your attorney, and your software trainer all want to help, and none of them does this work. “Don’t confuse somebody who knows 15 percent more than you with an expert.”

Hire like it matters, because it does

The cheapest prevention happens before day one, and Harris’s checklist is blunt. One in four American adults has a criminal record — check. Verify identity with photo ID plus two secondary pieces (the applicant with no ID drove to your interview somehow). Call every employer from the past five years — using phone numbers you Google yourself, never numbers the applicant provides, because the “cell number for Dr. Smith” is sometimes the applicant’s uncle doing a warm reference in character. Drug-test, because addiction funds an enormous share of practice theft. And read their public social media: how they communicate, whether the lifestyle matches the paycheck, how they talk about their current employer — because the way they talk about that boss is a preview of how they’ll talk about you.

Then, before any of it, spend five minutes on Prosperident’s famous Hall of Shame — a free, searchable gallery of roughly 750 convicted dental embezzlers, with photos, because names change. Twice a year, Harris says, someone browsing it recognizes their own current office manager. Search your whole state and the neighboring ones; thieves relocate.

If it’s already happened to you

Harris ends the hard conversations with what he calls the Dutch-uncle talk, and it deserves repeating. The person who did this knew you intimately — what you checked, what you never checked, the best day of the week to steal from you — and had unlimited time to plan. “It was an unequal battle, and you were destined to lose it. It doesn’t mean you’re stupid or a bad business owner.” The recovery work is real: money, sometimes, in part; the stomach lining and the sleep, more slowly; and the trust, carefully, so the pendulum doesn’t swing from trusting everyone to trusting no one — a mindset no clinician can practice underneath for long.

His best advice given, borrowed from a president: trust, then verify. His best advice received: don’t eat yellow snow. Both hold up.

The full conversation with David Harris is on the Dentelligentsia podcast; his firm is at prosperident.com. Delegation, he reminded us, is giving someone a job and holding them accountable — abdication is never wanting to hear about it again. Own the practice you own. And for the real estate half of what you’re building — talk to us.