Latest / The Side Hustle Career Podcast with Fexingo: Second Income, Freelancing While Employed / How a Dental Assistant Built a 7000 Monthly Side Hustle in Dental Billing Audits
Transcript
- Lucas: If you work in a dental office — or any healthcare admin role — you already have a skill that most freelancers don't: you know how the claims process actually works. Today's guest turned that into a seven-thousand-dollar-a-month side hustle. Luna: Okay, that's a big number. Who are we talking about? Lucas: Her name's Mariana — she was a dental assistant at a small practice in Phoenix, making about eighteen dollars an hour. She liked the clinical side, but she noticed something: the office was leaving money on the table with denied claims. So she started learning the billing side nights and weekends. Luna: So she wasn't even the office manager or the biller — she was chairside. How did she learn the billing part? Lucas: She took a six-week online certificate in dental billing and coding through the American Academy of Dental Coding. It cost about four hundred dollars. The course covers CDT codes — that's Current Dental Terminology — plus claim forms, coordination of benefits, and how to read an explanation of benefits. She studied after her shift, maybe an hour a night. Luna: And after six weeks, she was ready to audit claims for other offices? Lucas: Almost. She started by auditing her own office's denied claims as a side project. She found that about twelve percent of claims had coding errors — wrong tooth number, missing X-ray codes, bundling issues. She presented a report to her boss showing they could recover roughly twelve thousand dollars a year just from fixing those errors. Luna: And her boss actually paid her a cut? Lucas: He gave her a five-hundred-dollar bonus and asked if she could do it monthly. That was her first client. Then she built a website — literally a one-page Squarespace site — and started cold-emailing other dental practices in Phoenix. Her pitch was: 'I'll audit one month of your denials for free, and if I find errors, we can talk about a retainer.' Luna: Did offices actually take her up on that? Lucas: About one in seven said yes. She'd spend a weekend pulling their claim data and running it through a claims scrubber tool — a piece of software called ClaimRemedi that checks for common coding mistakes. In her free audits, she typically found between eight hundred and fifteen hundred dollars in recoverable revenue per office. That was enough to convert most of them into paying clients. Luna: What's her pricing model look like now? Lucas: She charges a flat monthly retainer of five hundred dollars per office. That covers a monthly audit of denied claims and a report with suggested corrections. She also does a quarterly deep dive on payer trends — like if Delta Dental starts denying a specific code more often. By month four, she had six recurring clients, which is three thousand a month. By month eight, she was at twelve clients, six thousand. Plus she kept her day job for a while. Luna: She didn't quit being a dental assistant? Lucas: No, she kept it for the first ten months. She said the side hustle income was the buffer that let her eventually go freelance full-time. But even at part-time, she was making seven thousand a month by month twelve. And the overhead is almost zero — just the software subscription and her laptop. Luna: That's impressive, but is the market that big? How many dental offices are out there with billing problems? Lucas: There are roughly 200,000 dental practices in the US. Most are small — one or two dentists — and they don't have a dedicated biller. The front desk person handles claims between scheduling patients. Error rates in dental billing are actually higher than in medical billing because there's less specialization. One study found that about fifteen percent of dental claims are initially denied, and many of those are never resubmitted. Luna: So the demand is there. But what about the competition? Are there a lot of freelance dental billing auditors? Lucas: Surprisingly few. There are tons of medical billing freelancers, but dental is a niche. Most dental billers work in-house. Mariana says she only knows of a handful of independent auditors in her state. And the barrier to entry is low — the certification is quick, and you don't need a college degree. If you've worked in a dental office for even a year, you already understand the workflow. Luna: Let's talk about the actual skills. What does someone need to know besides CDT codes? Lucas: You need to understand the claim lifecycle: from the moment a patient sits in the chair to the time the payment posts. That includes knowing how to read a dental claim form — the ADA 2012 version — and how to interpret the EOB, especially the adjustment codes. You also need to be comfortable with practice management software like Dentrix or Eaglesoft, because that's where the data lives. Mariana offers to do a free thirty-minute call to show prospects a sample audit report, which helps build trust. Luna: What's in her typical audit report? Lucas: It's a three-page PDF. The first page is a summary: total claims denied, total dollar amount, number of errors found. The second page is a table with each denied claim, the reason for denial, and the proposed correction. The third page is her recommendation for resubmission or appeal. She also includes a projection of recoverable revenue if the office follows her recommendations. That's the hook — she shows them concrete numbers. Luna: And the offices actually take action on that? Lucas: Most do, because they see the potential upside. One of her clients, a two-dentist practice in Scottsdale, was losing about fourteen thousand dollars a year in unrecovered denials. After four months with Mariana, they recovered six thousand and reduced their denial rate from eighteen percent to nine percent. The owner told her it was the best five hundred dollars a month he'd ever spent. Luna: That's a real ROI story. How does she handle the actual resubmission? Does she do it herself or just give instructions? Lucas: She gives instructions and templates, but the office staff submits the corrected claims. That's actually intentional — it keeps her liability low and lets her focus on auditing rather than administrative work. She also provides a simple tracking spreadsheet so the office can see which claims have been resubmitted and the outcome. It's a partnership, not a full outsourcing. Luna: Makes sense. So for someone listening who works in a dental office and wants to try this, what's the first step? Lucas: First, get the certificate — the American Academy of Dental Coding has a self-paced course for around four hundred dollars. Second, audit your own office's denials for a month. See how much money you can identify. Third, build a simple website and start offering free audits to other offices. Mariana says the hardest part is the first five cold emails — after that, it gets easier. She also suggests joining dental Facebook groups and offering advice, which can lead to referrals. Luna: And the time commitment? How many hours a week does she put into the side hustle? Lucas: About fifteen hours a week at the twelve-client level. Most of that is the monthly audits — each one takes about an hour once you're familiar with the office's patterns. The rest is client communication, report writing, and occasional prospecting. She does most of it on evenings and weekends, which is manageable if you're used to a full-time job. Luna: That's a solid side hustle. And it's a great example of leveraging domain knowledge. You don't have to learn an entirely new field. Lucas: Exactly. And honestly, if you're already in healthcare admin, you're sitting on a skill that's undervalued in the freelance market. Dental billing auditing is one of those niches where the supply of freelancers is low and the demand is steady. Luna: Speaking of undervalued — the work we do here on the podcast is only possible because of listeners who chip in a few bucks a month. If you've gotten value from these episodes, especially if you've thought about a career move or a side hustle because of something you heard, buy me a coffee dot com slash fexingo helps us keep the show ad-free and focused on real stories. Lucas: Yeah, it's a small thing that makes a big difference. A couple of dollars a month genuinely covers hosting and keeps the lights on. No pressure, but if this show has helped you, that's where you can support it. Luna: All right, back to the audit. One thing I want to ask — how does Mariana handle the seasonality of dental claims? Like, do some months have more denials than others? Lucas: She says denial rates are fairly consistent month to month, but there's a spike in January when annual deductibles reset and patients delay treatment until they hit their maximum. That's actually a good time to pitch new clients, because offices are more aware of cash flow. She also offers a year-end audit service in December to help offices clean up claims before the new year. Luna: Smart. And what about the tools — does she use any software beyond ClaimRemedi? Lucas: She uses Dentrix for the offices that have it, and Eaglesoft for others. ClaimRemedi is the main scrubber, but she also uses a spreadsheet template she built herself to track errors and trends. Her total monthly software cost is about a hundred dollars, which is negligible against her revenue. Luna: So for a hundred dollars a month in tools and a few hundred for the certificate, you could be up and running in two months. Lucas: Exactly. And the upside is five to seven thousand a month part-time. That's a pretty compelling return on investment. If you're a dental assistant or a front desk person listening, this is one of the most achievable side hustles I've seen on the show. Luna: Totally agree. Thanks, Lucas. That's it for this episode — go audit some claims.