Most med spa owners I talk to are spending $3,000 to $10,000 a month on marketing. When I ask what their patient acquisition cost is, maybe one in ten knows the number. When I ask about conversion rates at each stage of their funnel, maybe one in twenty can answer.
That's not a criticism. It's a pattern I see across 250+ practices. The tools exist to measure all of this. Nobody has shown you which numbers matter or how to pull them. So you spend based on gut feel, or worse, based on what your marketing agency tells you is working.
Before you spend another dollar, here are the five numbers you need to know.
1. Patient Acquisition Cost by Channel
Patient acquisition cost is simple math: total marketing spend on a channel divided by the number of new patients that channel produced. If you spent $4,000 on Google Ads last month and got 28 new patients from it, your Google Ads PAC is $143.
Most med spas I audit have a blended PAC of $150 to $350. That blended number is useless. It averages a profitable channel with an unprofitable one and tells you nothing about where to put your next dollar.
Break it out by channel. Google Ads, Instagram ads, Facebook ads, referral programs, events, direct mail. Each one has its own cost per patient. I've seen practices where Google Ads produces patients at $95 each while Instagram runs $380. They were spending equally on both because "you need to be on social." No, you need to be where your cost per patient is lowest.
Pull this data monthly. If your practice management system tracks lead source (and it should), this is a 20-minute exercise. If it doesn't, start asking every new patient "how did you hear about us?" and logging the answers. It's not perfect data. It's infinitely better than no data.
2. Lifetime Patient Value by Treatment
Most owners calculate their numbers on a per-visit basis. Botox at $350. A laser treatment at $1,200. A filler appointment at $800. These are transaction values, not patient values.
Actual lifetime patient value accounts for return visits over 24 months. A Botox patient who comes quarterly with a $600 average visit generates $4,800 over two years. A body contouring patient who does a $3,000 series plus $1,200 per year in maintenance treatments is worth $5,400 over that same period.
When your LTV is $4,800 and your PAC is $143, you have a 33x return. That marketing channel is worth scaling. When your LTV is $350 (single visit, never returns) and your PAC is $380 (Instagram), you're losing money on every patient. Knowing these numbers changes every marketing decision you make.
Calculate LTV for your top three treatment categories. Pull 24 months of data from your practice management system. Group patients by their initial treatment and track total revenue per patient over the period. The numbers will surprise you. They always do.
3. Conversion Rate at Every Funnel Stage
Your marketing funnel has five stages. A leak at any stage wastes everything you spent upstream.
- Ad click to website visit: should be close to 100%. If it's not, your landing pages are loading slowly or redirecting incorrectly.
- Website visit to contact: 5% to 15% is the range. Below 5%, your landing pages aren't converting.
- Contact to booking: 60% to 85% with a trained front desk. Below 60%, you have a phone conversion problem.
- Booking to show rate: 85% to 95% with proper confirmation sequences. Below 85%, you need automated reminders.
- Show to treatment: 70% to 90% depending on consult quality. Below 70%, your providers need consult training.
Multiply those rates together and you get your end-to-end conversion rate. At 10% website conversion, 70% booking rate, 90% show rate, and 80% treatment rate: for every 100 website visitors, you get 10 contacts, 7 bookings, 6.3 shows, and 5 treatments. A 5% end-to-end rate.
Now find the weakest link. If your website converts at 3% instead of 10%, fixing that one stage triples your patient volume without changing your ad spend. Most practices I audit have one stage that's dramatically underperforming. Fix that stage first.
4. The Cost of Not Knowing
I worked with a practice in Scottsdale last year that was spending $8,000 a month across Google Ads and Instagram. They thought both channels were performing "about the same" because they were getting roughly equal numbers of inquiries.
We ran the audit. Google Ads: 34 new patients at $141 PAC. Instagram: 9 new patients at $444 PAC. Their "equal" channels had a 3.5x difference in efficiency. We shifted $3,000 from Instagram to Google Ads the next month. New patient count went from 43 to 58. Same total spend. 35% more patients.
That's a $22,500 monthly revenue increase (15 additional patients at $1,500 average first-visit value) from a 20-minute data exercise. No new campaigns. No new creative. Just putting money where it was already working.
5. Running Your Own Audit
Here's the process. Block two hours on a Monday morning.
- Step 1: Pull 90 days of marketing spend by channel.
- Step 2: Pull 90 days of new patient data with lead source from your practice management system.
- Step 3: Calculate PAC per channel.
- Step 4: Pull 24-month patient revenue data for your top 3 treatment categories. Calculate average LTV.
- Step 5: Measure conversion rate at each funnel stage (you'll need Google Ads data, website analytics, call tracking, and your booking system).
- Step 6: Identify the weakest funnel stage and the most expensive PAC channel.
Fix the weakest link. Move money from the expensive channel to the cheap one. Re-measure in 30 days. This cycle, repeated monthly, will do more for your marketing ROI than any new campaign, platform, or agency pitch.
If the data feels overwhelming or you're not sure how to pull these numbers from your systems, that's exactly what our marketing strategy service covers. We run this audit with you, build the tracking infrastructure, and set up the monthly reporting so you always know where your money is going.
