Here’s a question most DPC owners can’t answer:
What does it actually cost you to acquire one new member?
Not what you spend on ads. The real number – total cost to turn a stranger into an enrolled, paying member.
If you don’t know that number, every growth decision you make is a guess. And that gap between what you think you’re spending and what you’re actually spending? That’s usually the difference between sustainable growth and burning $5,000-10,000 before you realize the math was broken.
The Pattern Every Stalled Practice Follows
You launch. Referrals get you to 150-200 members. Growth slows. You start running ads. Inquiries increase. Some convert. You keep spending because the phone is ringing.
Six months later: You spent a few thousands to add 12 members.
The math was broken from day one. You just didn’t see it.
Here’s what happened: Your cost per member kept creeping up while you focused on inquiry volume. More traffic feels like progress—until you check your bank account and realize it’s not.
The practices scaling predictably know three numbers. And they make every decision based on whether those numbers stay sustainable.
Want to know what your numbers are? The DPC Growth Calculator shows you in about 90 seconds. Plug in your current situation, and it tells you whether your patient acquisition model actually works—or whether you’re subsidizing enrollment without realizing it.
The Three Numbers That Separate Growth from Cash Burn
1. Customer Acquisition Cost (CAC)
Total cost to acquire one enrolled member. Not just ad spend—everything: tools, landing pages, follow-up systems, your time.
Most DPC practices think their CAC is $150-200. It’s usually $400-600 when you count what’s hidden.
2. Lifetime Value (LTV)
Total revenue a member generates over their relationship with your practice.
If you don’t know your average member retention in months, you’re guessing at whether your acquisition cost is sustainable. A member who stays 12 months is worth half what a member who stays 24 months is worth—but most practices treat them the same when budgeting.
3. Inquiry-to-Enrollment Conversion Rate
Percentage of prospects who express interest and actually enroll.
If you’re getting 30 inquiries per month but only enrolling 4 members, spending more on ads won’t fix it. You’re losing 26 out of 30 prospects between initial contact and enrollment. That’s not a marketing problem—it’s an intake problem.
The relationship between these three numbers determines whether you can scale—or whether scaling just accelerates cash burn.
Ready to check yours? The DPC Growth Calculator walks you through it. Takes 2 minutes. Shows you exactly how many inquiries you need per month to hit your panel goals—and whether your current spend can get you there sustainably.
Why Doubling Your Ad Budget Usually Backfires
Here’s the mistake:
You’re spending $900/month on Google Ads. Getting 20 inquiries. Enrolling 5 members. You think, “This is working—let’s double the budget.”
So you go to $1,800. Inquiries jump to 35. Enrollments go to 7.
You spent twice as much. Got more volume. But your cost per enrolled member just increased 28%.
Why? The constraint wasn’t lead flow—it was conversion efficiency. More budget amplified an intake problem you didn’t know existed.
This is the scenario most DPC practices are living in right now. They’re spending. They’re getting inquiries. But they don’t know whether the economics work until growth stalls or cash flow tightens.
The practices that avoid this track cost per enrolled member at each stage. When that number creeps up, they fix conversion before adding budget.
Want to see whether you’re in this scenario? Grab the DPC Growth Cheat Sheet. It shows you what to track, what benchmarks to aim for, and when to optimize conversion versus when to increase spend. Built specifically for DPC economics—not generic subscription businesses.
What Happens When You Don’t Track This
Three predictable failures:
1. Marketing spend becomes arbitrary
You set budgets based on what feels reasonable—$500, $1,000, $3,000/month—without knowing whether that can realistically produce the members you need.
2. Growth targets disconnect from reality
You might need 40 inquiries/month to add 10 members at your current conversion rate. But if generating 40 inquiries requires spending beyond sustainable CAC, you’re capacity-constrained by budget—not demand.
3. You can’t diagnose what’s broken
When enrollment slows, you don’t know if it’s traffic (not enough inquiries), conversion (inquiries not enrolling), or economics (CAC too high to scale). So you either keep spending hoping it improves, or cut budget and accept slower growth without understanding why.
The alternative? Treat patient acquisition as a system where inputs, outputs, and constraints are visible.
That’s what the DPC Growth Calculator and Growth Cheat Sheet are built for. Calculator shows you the math. Cheat Sheet shows you what to do about it.
What Changes When You Know Your Numbers
Once you know CAC, LTV, and conversion rate, marketing decisions stop being guesses.
Instead of “Should we increase our ad budget?” you ask:
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- At current conversion rates, how many inquiries do we need to add 8 members this month?
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- If we generate that many inquiries, what does CAC look like?
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- Is that CAC sustainable given our membership fee and retention?
These questions only become answerable when the math is visible.
The Framework: Design Before You Scale
Growth isn’t about spending until something works. It’s about designing a system where the economics are sustainable before you scale.
Three steps:
Plan: Define target CAC based on membership pricing. Set realistic monthly enrollment targets. Reverse-engineer how many inquiries you need at current conversion rates.
Validate: Test at small scale. Track actual CAC, conversion rate, inquiry quality. Confirm the math works before increasing spend.
Execute: Scale only when CAC stays within target range. Optimize conversion as you grow. Adjust targeting when inquiry quality drops.
This is patient acquisition as a control system—where decisions are reversible because they’re based on real enrollment behavior, not assumptions.
Ready to build this for your practice?
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- DPC Growth Calculator → Shows you the math in 2 minutes. Tells you how many inquiries you need, what your target CAC should be, and whether your current approach is sustainable.
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- DPC Growth Cheat Sheet → Step-by-step framework for what to track, when to optimize each part of the system, and how to know when you’re ready to scale.
Both free. Both built specifically for DPC practices—not generic businesses with completely different economics.
Start Here
Pull your numbers from last month:
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- Total marketing spend (ads, tools, agency fees, your time)
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- Total qualified inquiries (form submissions, consultation bookings)
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- Total new members enrolled
Then plug them into the DPC Growth Calculator.
It’ll show you whether your current approach is sustainable—or whether something needs to adjust before you scale.
Grab the DPC Growth Cheat Sheet for the step-by-step framework on what to do with those numbers once you have them.
If the numbers suggest your current model isn’t sustainable, that’s not a failure.
It’s clarity.
And clarity is what makes growth decisions reversible instead of reactive.