How a Solo Founder Built a SaaS by Selling to Dentists

**Fexingo** (0:01)
If you've ever sat in a dentist's chair, and most of us have, you probably didn't think, I bet the software behind this practice is a goldmine. But today's founder, Dr. Mark Chen, saw exactly that.

**SPEAKER_2** (0:15)
Mark is a practicing dentist. He built a SAS for dental clinics without writing a single line of code. And it's now doing over $2 million in annual recurring revenue.

**Fexingo** (0:27)
Yeah, $2.3 million ARR as of last month. And he started it while still seeing patients four days a week.
So the question is, how does a non-technical domain expert break into a vertical like dentistry and build something people actually pay for?

**SPEAKER_2** (0:43)
Let's start at the beginning. What was the pain point he identified?

**Fexingo** (0:48)
It was billing, specifically the super bill.
In dental practices, after a procedure, the front desk prints a super bill, a detailed form with procedure codes, diagnosis codes, and patient info that the patient then submits to their insurance for reimbursement. It's a manual, paper-based workflow that takes about 10 minutes per patient.

**SPEAKER_2** (1:10)
And that doesn't sound like a huge deal until you multiply it by 20 patients a day.

**Fexingo** (1:16)
Exactly.
Mark calculated that his own practice was losing about two hours of front desk labor per day just on super bills. And that's time that could be spent on patient care or scheduling. So he thought, there has to be a better way.

**SPEAKER_2** (1:32)
But he didn't just build something and hope. What did he do first?

**Fexingo** (1:36)
He cold called 50 dental offices. He called during lunch breaks, identify himself as a fellow dentist, and ask, how do you handle super bills? What's your biggest frustration?
He found that 80% of them said it was a pain point, and about half said they'd pay for software that automated it.

**SPEAKER_2** (1:56)
That's a pretty clear validation signal. And he didn't need to write code because he used no code tools.

**Fexingo** (2:04)
Right. He built the first version on Bubble, a no code platform with a simple form that auto populates procedure codes and generates a PDF super bill.
He tested it in his own practice for two weeks. When the front desk loved it, he started offering it to those 50 offices he'd called.

**SPEAKER_2** (2:22)
Did he charge from day one?

**Fexingo** (2:25)
He did. He priced it at $299 per provider per month. That's not cheap, but he knew dental offices are used to paying for software.
Practice management systems like Dentrix or Eagle Soft cost hundreds per month. So $299 felt like a no-brainer for saving two hours a day.

**SPEAKER_2** (2:45)
And he was an insider.
That matters. When he called a dental office and said, I'm Dr. Chen, I run a practice in Phoenix, they didn't hang up.

**Fexingo** (2:55)
That's the key. Domain expertise is a moat. He spoke their language. He knew what CDT codes were. He knew the insurance reimbursement process. He didn't have to learn the industry.
He lived it, and that gave him credibility that no outsider could match.

**SPEAKER_2** (3:13)
So, what happened after he launched?

**Fexingo** (3:16)
Of the 50 offices he initially contacted, 12 signed up within the first month. That's a 24% conversion rate from cold call to paid customer. Then word of mouth kicked in.
Dentists talked to each other at conferences in study clubs. Within six months, he had 80 practices on the platform.

**SPEAKER_2** (3:37)
And all of this without a sales team, without ads, without any outside funding.

**Fexingo** (3:43)
Correct. He bootstrapped entirely on his dentist's salary. He didn't quit his day job.
He built the software in evenings and weekends, and his wife handled customer support for the first year. By month 18, the SaaS revenue exceeded his dentist income, and he finally cut back to three days a week at the practice.

**SPEAKER_2** (4:04)
That's the dream, right? Replace your full-time income with a side project.

**Fexingo** (4:09)
It is. But Mark's story also has a lesson about pricing. He never discounted. He gave a 30-day free trial, but after that, it was full price.
And his trial to paid conversion was around 40 percent, which is excellent for B2B SaaS.

**SPEAKER_2** (4:26)
Quick honest thing, this show is ad-free and listener-supported. A handful of listeners chip in monthly through imeacoffee.com/fexingo, and that's literally what funds making this many episodes. If you find these founder stories useful for what you're building, that's one way to keep them coming.
Yeah, I think that's a big part of why we can dive deep into a niche like dental software without any commercial pressure. It's just about the craft.

**Fexingo** (4:54)
Exactly. So back to Mark. The other interesting thing is that he never built a mobile app.