You are about to sign an LOI on a family medicine practice doing $1.8M in revenue. The financials look clean. The DSCR clears 2x. The seller has been the sole physician for 22 years.
Then you ask: what happens to patients when he leaves?
That question is either the deal or the deal-killer. Medical practice patient retention is not a soft metric you can figure out later. It is the single biggest risk factor in a physician-owned practice acquisition, and most buyers do not model it until they are already neck-deep in diligence, burning time and legal fees on a deal that may not survive the answer.
Here is how to think about it before you wire any money.
Why Patient Retention Defines Practice Value
A medical practice is not a product. It is a relationship business. And that distinction matters more than most buyers realize at the outset.
The revenue on the books belongs to the patients who showed up last year. But there is nothing contractually obligating those patients to show up next year, especially if the face they trusted for two decades is gone. No subscription agreement. No annual contract. Just habit, familiarity, and trust in a specific person.
When lenders underwrite a medical practice acquisition, they are not just looking at historical SDE. They are stress-testing what the cash flow looks like with a 10%, 20%, or 30% patient attrition haircut. At a practice generating $400K in SDE, a 25% patient loss costs you $100K in earnings. That drops your DSCR from 2.1x to somewhere around 1.4x. Below the 1.5x floor we consider acceptable, and well below the 2x target we underwrite to.
The multiple you pay at close should reflect the retention risk you are buying. If it does not, you are overpaying for a promise that nobody made.
The Four Factors That Drive Retention After a Transition
Not all practice transitions carry the same risk. These four variables are the ones that actually move the needle.
Practice type. Primary care and family medicine are the highest-risk categories. Patients have a personal relationship with their physician that, in many cases, spans decades. Specialist practices where referrals drive volume rather than loyalty to a single doctor tend to transition more smoothly. Dermatology and urgent care sit somewhere in between, though the specifics matter more than the category label.
Seller tenure. A physician who has been in the same location for 20-plus years has built deep community ties. That sounds like a positive, and it is, until you realize it also means every patient associates the practice with one person. A practice where three providers share volume is inherently less dependent on any one of them. We have seen this difference play out enough times that we flag single-provider, long-tenure practices as higher risk by default.
Transition period. A seller who agrees to stay on for 90 to 180 days post-close meaningfully reduces patient churn. The handoff feels less abrupt. Patients get introduced to the new physician before the old one disappears. This one factor can be the difference between 10% attrition and 30% attrition. Worth reading that again.
New owner profile. A buyer who is also a physician has a massive advantage here. A non-physician buyer needs to hire a strong replacement physician before close. Not after.
How to Structure the Seller’s Transition Agreement
This is where the deal gets made or falls apart.
At minimum, push for 90 days of post-close participation. Ideally 180 days. Structure it so the seller is actively seeing patients and personally introducing the incoming physician (not just being available by phone, which accomplishes almost nothing in terms of patient trust transfer).
If the seller resists a longer transition, tie part of the seller note to retention milestones. This is not uncommon in healthcare deals. You can structure earnout provisions against 12-month or 24-month patient panel retention targets. If 85% of active patients remain after year one, the seller gets paid in full. If it drops below 70%, a portion of the note is adjusted.
Your attorney needs to draft this carefully, and your CPA should model the financial scenarios before you finalize the structure. The permutations matter.
Side note: state corporate practice of medicine rules can complicate how you structure the seller’s continued involvement. In some states, the departing physician’s post-close role needs to be carefully defined to avoid regulatory issues. Flag this with counsel early.
We have seen deals where the seller note included a straightforward 10-year full standby structure at 0% interest alongside earnout provisions tied to revenue thresholds. That combination is achievable when the seller understands their retention risk is real and shared. On roughly 90% of our deals, we get to full standby at zero interest on the note. Healthcare deals are no different.
What Lenders Actually Want to See
SBA lenders doing healthcare acquisition deals are not naive about attrition risk. They have seen practices lose 30% of their panel in six months. They have also seen smooth transitions where barely a patient leaves. What separates the two, in the lender’s eyes, is documentation.
When you submit your loan package, expect the underwriter to ask about provider continuity. Be ready to present a written transition plan. If you are a non-physician buyer, document your plan for replacing the seller’s clinical capacity. A signed employment agreement with a replacement physician, or at minimum a letter of intent with one, goes a long way in underwriting. Without it, the loan package has a hole that is hard to paper over.
The lender will also look at payer mix. A practice that is 80% Medicare and Medicaid is inherently more stable in terms of patient retention than one that is 60% commercially insured with a lot of out-of-pocket self-pay. Medicare patients tend to be less likely to switch providers due to complexity of care and established relationships with referral networks. That is not a guarantee of retention, but it is a meaningful data point.
If the practice has EMR data showing consistent patient visit frequency over 3 to 5 years, that is a positive signal. Ask for it during diligence. Specifically request the number of active patients (defined as a visit in the last 24 months) and the average visit frequency per patient per year. Those two numbers tell you more about retention risk than anything the seller says in a meeting.
Running the Retention Stress Test Before You Make an Offer
Before you submit a letter of intent on any physician-owned practice, run this model. It takes 20 minutes and can save you months.
Take the trailing 12-month SDE. But first, discount it. SDE as reported is almost always overstated. We typically haircut SDE by 15% to 50% to get to real, repeatable cash flow. For a single-physician practice, err toward the higher end of that discount range because so much of the value is tied to one person’s production and relationships.
Now apply three scenarios to your adjusted cash flow number: 10% patient attrition, 20% attrition, and 30% attrition. Assume revenue loss tracks proportionally to patient loss, which is a reasonable starting assumption for a single-physician practice.
Then run your DSCR at each scenario at the purchase price you are considering.
If the deal clears 1.5x DSCR even at 20% attrition, you have a cushion. That 1.5x is the floor. Our target is 2x, and if the deal only clears 2x at the rosiest retention scenario, the economics are tighter than they look. If DSCR breaks at 15% attrition, the price is too high for the transition risk you are carrying. Full stop.
This is exactly the kind of modeling we run on every healthcare deal we evaluate. The number of practices that look attractive at face value but fall apart under a 20% attrition scenario is significant.
Red Flags That Signal High Retention Risk
A few things in diligence should make you slow down immediately.
The seller has a non-compete that does not cover the full geographic area. If they can open a competing practice two miles away, some patients will follow. Count on it.
There is no overlap between the seller and any associate physician. Single-provider practices with zero other clinical staff are highest risk for patient walkaway. No warm body to bridge the gap means every patient is making a cold decision about whether to stay.
The seller is resistant to a transition period of more than 30 days. That resistance is either a personal preference or a signal that they know the patient relationships are fragile and do not want to be around for the fallout. Either way, it is a problem.
Patient reviews heavily reference the selling physician by name. “Dr. Smith is the only reason we come here” appearing in a dozen Google reviews is useful data. Read them. All of them. The online reviews are essentially a free patient loyalty survey that nobody asked for but everyone should look at.
And one more that buyers frequently miss: the practice has already seen a prior physician departure and has not fully recovered the panel. Ask directly whether any other providers have left in the past 5 years and what happened to the patient volume. If they lost a junior associate 3 years ago and the panel still has not recovered, imagine what happens when the founder leaves.
Frequently Asked Questions
How much patient attrition is normal after a medical practice acquisition?
It varies by practice type and transition structure. Primary care practices can see 15% to 30% patient loss when a long-tenured physician exits without a proper transition. Specialist practices and multi-provider groups tend to see lower attrition, often 5% to 15%. A well-structured 90 to 180-day seller transition period is the single most effective tool for reducing these numbers.
Will an SBA 7(a) lender finance a medical practice acquisition?
Yes. Medical practices are eligible for SBA 7(a) financing. Lenders will evaluate DSCR the same way they do on any acquisition. Our underwriting target is 2x, and we treat 1.5x as the floor below which a deal does not work. Lenders will also scrutinize the transition plan and provider continuity more closely than they would in a non-professional service acquisition.
Can a non-physician buyer acquire a medical practice?
Depending on state law, yes. Some states require physician ownership or a specific management services organization (MSO) structure due to corporate practice of medicine rules. A non-physician buyer typically needs a strong replacement physician in place before or at close to satisfy both lender requirements and patient retention goals. Your attorney should review the applicable state regulations early in diligence, not after you have an accepted LOI.
Should patient retention be tied to the seller note structure?
It can be, and in higher-risk transitions it often should be. An earnout or milestone-based seller note that ties a portion of payments to 12-month or 24-month patient panel retention puts shared skin in the game. The seller is incentivized to execute a genuine transition, not just collect the check and disappear. Structure this carefully with legal counsel.
What data should I request during diligence to evaluate retention risk?
Request the active patient count (at least one visit in the last 24 months), average annual visit frequency per patient, provider-level revenue breakdown if there are multiple physicians, payer mix breakdown, and any historical data from prior provider departures. EMR exports with de-identified visit data can tell you a lot about how sticky the patient panel actually is.
Thinking About Acquiring a Medical Practice?
Healthcare acquisitions require a different level of diligence than most business purchases. The patient retention question is one piece of a more complex underwriting and structuring challenge, and getting it wrong is expensive.
Regalis Capital advises buyers through the full acquisition process, from deal sourcing and financial modeling through SBA financing and negotiating transition terms that protect your investment post-close.
If you are serious about acquiring a medical or professional services practice, start with our process overview to see how we work with buyers.