Buying the Clinic: A Billing Registration Caught Before Closing

The situation

Marco had run a physiotherapy and massage therapy clinic out of Elliot Lake for close to twenty-eight years, building it from a single treatment room into a practice with a full waiting list and two other full-time clinicians handling sports injuries, post-surgical rehabilitation and workplace injury claims across the North. Most of his patients came through referrals from local family doctors and the regional hospital's discharge planners, and a steady share of the caseload was mill and mine workers referred after workplace injuries, whose treatment was paid for directly by the Workplace Safety and Insurance Board rather than out of pocket. At sixty-eight, he wanted to retire, but he did not want to sell to an outside chain that might change how patients were treated or cut his clinicians' hours to protect a margin. He had two people in mind: Carlos, a licensed physiotherapist who had run the clinic's orthopaedic and sports-injury caseload for nine years, and Rosa, a registered massage therapist who had built the clinic's manual therapy service from almost nothing into a caseload as large as the physiotherapy side over the previous six years. Between them they knew every patient file, every referring physician and every piece of clinic equipment better than Marco did.

The three of them agreed on a price in principle — roughly $1.1 million for the clinic, financed through a combination of the buyers' savings, a vendor take-back loan from Marco, and a small business loan — and came to Treadstone Law to put the deal on paper. On paper, it looked like the simplest kind of succession: two trusted clinicians buying the practice they already ran day to day.

What due diligence found

The clinic's bookkeeper had assumed that because Carlos and Rosa already held their own professional registrations — Carlos with his physiotherapy college, Rosa with her massage therapy college — nothing else regulatory needed to change hands. The corporation would simply change owners, and the clinic's existing billing arrangements would carry on as before. That assumption is common in small clinic sales, and it is wrong often enough to be dangerous.

Two separate registrations kept the clinic able to get paid for the care it delivered, rather than merely allowed to deliver it. Its status as an approved provider with the Workplace Safety and Insurance Board, which let it bill WSIB directly for treating injured workers instead of making patients pay up front and wait for reimbursement, was registered to Marco personally as the clinic's physiotherapist of record — not to the corporation as an asset that transfers automatically with a share sale. The clinic's direct-billing arrangements with the major extended health insurers worked the same way: each insurer's network listed Marco individually as the registered provider behind the clinic's billing number, the person whose credentials the insurer had verified when it agreed to accept claims submitted straight from the clinic rather than from the patient.

A share purchase — buying the shares of the existing corporation rather than its individual assets — is usually the cleanest way to buy a going-concern clinic, because patient files, staff, equipment leases and referral relationships all stay with the same legal entity. The buyers were relying on that structure to avoid disrupting patients. But a share sale changes who owns the corporation; it does nothing on its own to change who WSIB and the insurers have on file as the registered provider behind the corporation's billing arrangements. If Marco stepped back from the clinic the day the shares changed hands, the corporation would be left holding patient files, staff and a lease, but no properly registered provider behind its own billing number — and neither WSIB nor a private insurer treats that as a paperwork formality. Claims submitted in that window can simply be rejected, leaving patients to cover the cost themselves and the clinic to chase money it had already earned providing the care.

Nobody involved had done anything wrong. The gap existed because corporate ownership and individual provider registration are two different systems that happen to overlap, and closing a share purchase without checking both is one of the most common — and most avoidable — mistakes in a small clinic succession.

What we did

1. Ran a regulatory check alongside the financial and legal diligence. Before the purchase agreement was drafted, our team confirmed in writing, directly with WSIB and each of the clinic's major insurer billing networks, exactly what each required to register Carlos as the clinic's physiotherapist of record and add both Carlos and Rosa as approved providers on the clinic's existing accounts — and how long that process typically took to complete once an application was filed.
2. Restructured the timeline around the registrations, not the calendar. The buyers had originally hoped to close within a few weeks of signing. Once we learned the WSIB and insurer registrations would take roughly six to eight weeks to process from application to confirmation, we moved the target closing date to match that timeline, rather than closing first and hoping the paperwork caught up behind the sale.
3. Made registration confirmation a closing condition, not an afterthought. The purchase agreement was written so that closing could not occur until WSIB and the relevant insurers had confirmed the new provider registrations in writing. If the confirmations did not arrive on schedule, either side could delay the closing date or walk away without penalty — so the risk of a billing gap sat with the deal timeline itself, not with patients or the clinic's cash flow.
4. Kept it a share purchase, with the registration issue fixed underneath it. The share structure still made sense — it preserved the clinic's existing patient files, its referral relationships with local physicians, and its standing with long-term patients who did not want to re-explain their history to a new practice. The fix was procedural, not structural: get the right names on file with WSIB and the insurers before the ownership change took legal effect, not after the fact.
5. Built in a transition holdback. About ten percent of the purchase price, roughly $110,000, was held back and released to Marco only after a short transition period during which he stayed on part-time to introduce Carlos and Rosa to referring physicians and confirm no claims already in progress were left unresolved. This protected the buyers if any complication surfaced during the registration process, and gave Marco a clean, defined exit rather than an abrupt one.
6. Documented Marco's post-sale role clearly in writing. A short consulting arrangement and a non-competition undertaking set out exactly what Marco would and would not do after the sale, including how many hours a week he would remain available to answer questions from referring physicians and how long he agreed not to open a competing clinic within the same catchment area.

The outcome

The WSIB and insurer registrations came through a little over seven weeks after the applications were filed — within the range Treadstone Law had built into the closing timeline. Closing took place on schedule, with all of the confirmations already in hand rather than pending. The clinic never had a single day where it was treating patients without a properly registered provider behind its own billing number. Claims already in progress continued to be paid without a single rejection, the clinical staff kept their positions, and patients never knew there had been a risk at all.

Marco's transition period ran about six weeks, during which he introduced Carlos and Rosa to referring physicians and a handful of long-standing patients as the clinic's new owners. The holdback was released to him on schedule once the transition wrapped up cleanly. Carlos and Rosa now co-own the practice they spent years helping build, and the clinic Marco spent nearly three decades building kept its name, its clinicians and its patient roster intact through the handover.

Nothing about this case involved a fight. It involved a problem that was real, would have been serious if it had surfaced after closing instead of before it, and was fixed by treating a billing registration check as seriously as a bank statement during due diligence.

What you can learn from this