If someone calls your practice and nobody picks up, they call the next practice on the list. That is money walking out of the door.
The problem is that nobody measures it. Your P&L does not have a line item called "revenue we did not get because the phone rang out". So the number stays invisible, and invisible numbers do not get fixed.
We built a calculator to make it visible. Four numbers, thirty seconds. Below it I walk through where the arithmetic comes from and what to do with the answer.
The four numbers you need
Monthly inbound call volume
How many calls does your practice take a month? Your phone system reports this. If you have not looked recently, look now.
- Primary care: 600 to 1,200 a month
- Dental: 400 to 900 a month
- Specialty: varies wildly. Ophthalmology and dermatology run high at 800 to 1,500. Cash pay concierge runs low at 100 to 300
Call abandonment rate
The share of calls that ring out, hang up in the queue, or hit voicemail without leaving a message. Many phone systems report it. Some do not.
If you cannot find the number, ask your front desk. They know. A busy primary care practice runs 15 to 25 percent. A dental practice with a solid recall system runs 10 to 15. A specialty practice with a very organized front desk runs 8 to 12.
Share of missed calls that are new patients
The one nobody has data for. Rough benchmark is 15 to 25 percent of missed inbound calls are first time callers.
You can validate it yourself in about an hour. Pull a sample week of your call log, take the number from each abandoned call, look it up in your EHR, and check whether the caller was already a patient. Do that for one week and you have real data instead of a benchmark.
Average lifetime value of a new patient
The one that hurts to think about. Take your average annual revenue per patient and multiply by how long a patient typically stays with you.
- Primary care: about $3,000 over the life of the relationship, per Physicians Weekly, 2021. That is the figure the calculator defaults to
- Specialty: $600 to $2,000 a year over 2 to 4 years, so $1,200 to $8,000
- Dental: $500 to $1,500 a year over 4 to 7 years, so $2,000 to $10,500
If you know your real number, use it. If you do not, the calculator defaults to $3,000 for primary care, which is the published average rather than a figure we picked.
The full calculation, shown
Five steps. Two of them are discounts, and those two are the reason this number is defensible where most vendor calculators are not. Skip them and you get a figure roughly three times too large, which is exactly what happens across most of this category.
| Step | What it applies | Worked at 800 calls a month, 20% abandoned |
|---|---|---|
| 1. Missed calls a year | Volume times abandonment times 12 | 1,920 calls |
| 2. New patient inquiries | Times 15%, the MGMA benchmark | 288 inquiries |
| 3. Would have booked | Times 50%, because not every inquiry converts | 144 patients |
| 4. Never call back | Times 65%, because about a third do try again | 94 patients |
| 5. Lifetime revenue at risk | Times $3,000 patient lifetime value | About $282,000 |
Steps three and four are the honest part. An inquiry that reaches a human does not automatically become a booked patient, and a caller who could not get through is not automatically lost, because published non recall research puts the share who never try again at around two thirds rather than all of them. Any calculator that goes straight from step two to step five is selling you a number rather than showing you one.
The output is deliberately framed as lifetime revenue rather than revenue this year. Those are different claims and the second one is the one a practice owner will check. Ninety four patients acquired this year at $3,000 lifetime value is $282,000 of lifetime revenue, arriving over several years, not $282,000 of cash in the next twelve months.
Alongside the headline the calculator shows two more things. Recovery at 80 percent capture, which is a fair middle against vendors claiming 90 and vendors admitting 60. And the break even threshold, which is the share of missed calls a phone agent would have to catch just to cover its own cost. Anything above that line is net positive.
Why the number is usually larger than practices expect
Three reasons, and they compound.
- Abandonment is under counted. Most phone systems report calls that rang out, and not calls that reached voicemail and hung up without leaving a message. Those are frequently logged as answered
- The new patient share is where the value concentrates. Fifteen percent of missed calls carry almost all of the revenue at risk, because an existing patient who cannot get through mostly calls back and a new one does not
- Lifetime value is not annual value. Practices instinctively price a lost patient at one visit. The figure that matters is the whole relationship, which for primary care averages $3,000 per Physicians Weekly in 2021
What to do with the number
Log your calls for one full week
Validate the inputs against real data. Your phone system probably reports volume and abandonment. Your front desk knows how many of those were new patients. One hour of work, then rerun it with your own figures rather than my benchmarks.
Check whether your phone system reports abandonment at all
Some do, some do not. If yours does not, that is worth knowing on its own, because you are flying blind on a number that could be quietly running your practice into the ground.
Compare it against what the alternatives cost
A fully loaded front desk hire runs about $52,000 a year and covers forty hours a week. An AI phone agent runs somewhere between $12,000 and $22,000 a year depending on the vendor, and covers all one hundred and sixty eight.
Neither is automatically right for your practice. But you cannot make the call until you know what the missed calls are costing you, and that is the whole point of the tool.
What a good capture rate actually looks like
At Synergy Medical, a family medicine practice in Michigan running athenahealth, MedPhone resolves an estimated 65 to 75 percent of calls without them reaching staff. That was just over half at launch and has climbed since. I would rather give you the honest range than a round number.
What moves that figure for your practice:
- Call complexity. Routine bookings and rescheduling are highly capturable. Complex clinical questions and specialty triage pull the average down
- Practice specific tuning. The first two weeks of any deployment is the noisiest, and the rate climbs as the system learns your patterns
- How aggressive your transfer rules are. Routing more to humans lowers the capture rate and improves the experience for complex callers. That is a trade you get to make
If a vendor claims 95 percent capture on a demo, ask them to define capture. Some count a voicemail message as a capture. That is not what a practice owner means by the word.
What the calculator cannot tell you
Being honest about the limits, because a number you cannot trust is worse than no number.
- Referral revenue. A missed call today loses a patient tomorrow, and that patient talks to five friends. The calculator ignores that entirely
- Payer mix. New patients captured after hours may carry a different insurance mix than your current panel, which changes lifetime value
- Call type. Every missed call is weighted the same here. In reality an abandoned refill request is not worth the same as an abandoned new patient inquiry
- Time to fill. Capturing an inquiry today does not mean they sit in your chair this month, and the cash flow picture differs from the raw lifetime figure
If you want those factored in properly, use the request button under the calculator and we will put the model together for your practice, or book twenty minutes and we will run it with you on the call.
Sources
Questions people ask
Is the calculator free?
Yes, and the output does not require an email address. You only need to leave details if you want us to put together the fuller model for your practice.
How is the break even threshold calculated?
Our typical annual cost divided by your annual revenue at risk. It tells you what share of missed calls we would need to catch to cover our own cost. For most practices that lands between 15 and 40 percent.
Is $3,000 realistic for a primary care patient?
It is the published average for US primary care, from Physicians Weekly in 2021, and it reflects the whole relationship rather than one year of it. Specialty and procedure heavy practices run well above it. The conservatism in our calculator is not in the lifetime value, it is in the two discounts applied before it: only half of new patient inquiries are counted as would have booked, and only 65 percent of unreached callers are counted as lost, because the rest do ring back.
How does this compare to hiring another front desk?
There is a full teardown in the front desk cost post. Short version: a hire is about $52,000 a year and covers forty hours a week. MedPhone starts at $150 a month and covers all one hundred and sixty eight.
Where does the 80 percent capture assumption come from?
It is a deliberately middle of the road figure for the recovery line, not a promise. Our own measured containment at Synergy Medical sits at an estimated 65 to 75 percent. Your practice will differ.
Written by
Agni Patel is the founder and CEO of MedPhone. He built the missed call calculator in his spare time because customers kept asking for it.