What happens to your payer contracts when practices merge?

Pricing Discipline series — Altitude Intelligence

Two orthopedic groups combine. The deal team has modeled the real estate, the staffing, the ancillary revenue, the call schedule. Somewhere in the diligence binder is a folder of payer contracts that everyone assumes will "carry over."

Most contracts carry assignment and change-of-control language that governs what happens to contracts in the event of a merger. Sometimes this allows for a carry over, sometimes not. In the gap between what the deal team assumed and what the payer actually does, practices routinely leave real money on the table.

Here is what actually happens, and what the group absorbing another practice — or being absorbed — should do about it.

Payer contracts don't merge. TINs do.

A commercial payer contract is written to a legal entity, typically identified by its Tax Identification Number. When Practice A acquires Practice B, one of a few things happens:

1. Practice B's TIN is retired and its physicians begin billing under Practice A's TIN — and Practice A's fee schedule.
2. Both TINs persist for a transition period, each on its legacy fee schedule, creating two rate books inside one organization.
3. A new entity and TIN are formed, and everything gets re-papered from scratch.

Most groups default to option 1 because it's operationally simplest. What almost no one does first is check whether Practice A's fee schedule is actually the better one.

The rates were never the same

Two practices in the same specialty, in the same market, contracted with the same payer, are almost never paid the same. Different contracting histories, different negotiation timing, different leverage at the moment each contract was last touched — the differences compound quietly over years.

That means every merger contains a hidden rate decision: whose fee schedule survives? Fold the acquired group onto the acquirer's schedule and you may be handing the payer a rate cut it didn't have to negotiate for. Payers understand this dynamic well. Some will proactively "harmonize" the combined entity onto whichever schedule is lower and present it as administrative cleanup.

Before Transparency in Coverage, you mostly couldn't see this coming. Each side knew its own rates and guessed at the other's. Today, both fee schedules are sitting in the payer's machine-readable files, code by code, TIN by TIN. The rate differential between the two organizations is knowable before the LOI is signed — by you, and by the payer. Only one of those parties reliably runs the analysis.

Change-of-control clauses: the fine print that decides everything

Most commercial agreements contain assignment or change-of-control language. Depending on how it's written, a merger can:

• Require payer notice or consent before the contract transfers — and consent is a negotiation opening the payer controls.
• Trigger a termination right, letting the payer end an above-market legacy contract it has wanted out of.
• Transfer silently, preserving the legacy schedule — sometimes the best outcome, if the legacy schedule is the strong one.

Reading these clauses is diligence work, not post-close cleanup. If the acquired group's contract has the better rates and a payer termination trigger, that's a valuation issue, not a paperwork issue.

The merger is a negotiation window. Most groups waste it.

Here's the part that gets missed even by well-run groups: re-papering a contract is one of the few natural moments a payer expects to talk about rates. Outside of renewal cycles, payers have little incentive to open a contract. A merger forces the conversation open.

A group that walks into that conversation with the code-level rate comparison — here is what each entity was paid, here is the market context, here is the schedule the combined entity should be on — negotiates from evidence. A group that treats re-papering as an enrollment task gets defaulted onto whatever the payer proposes, which will not be the higher of the two schedules.

The combined entity also has more leverage than either predecessor: more physicians, more volume, more market presence. Leverage that isn't exercised at the moment it's created tends to expire quietly.

Mergers also create opportunities across the market

As practices merge, other providers should also watch how payers and the larger provider groups approach contracting. The change in market conditions doesn't just affect what logo everyone wears - but also the market conditions of the local reimbursement market.

A few recent examples transpired in Massachusetts recently. In one instance, a primary care group was acquired by a much larger multispecialty group. While the major payers in Massachusetts - BCBS and Harvard Pilgrim - paid higher rates to the larger group, one of the major national payers did not and paid the smaller primary-care only group a higher rate (to the tune of about 8%). How this agreement survives post transaction will be worth watching to see how the payer and surviving multispecialty group react.

This also created additional opportunity for other providers in the area. While waiting for these contracts to sort themselves out, another local provider which was already engaged in negotiations with that national payer leveraged Transparency-in-Coverage data to point to the changing market conditions and work through a new, higher-than-expected reimbursement structure while still maintaining their desired "value oriented" status.

What to do, in order

Before close:

1. Pull both entities' negotiated rates from payer MRF data for the top-volume codes in your specialty. This is public data; the only barrier is processing it.
2. Quantify the differential. If the two schedules diverge materially on your highest-volume procedures, that delta belongs in the deal model.
3. Read the assignment and change-of-control provisions in every material payer agreement, both sides.

At close:

4. Choose the TIN strategy deliberately — not the operationally easiest path, the economically best one. Sometimes keeping the acquired TIN alive through a transition preserves a stronger legacy schedule.
5. Treat every required payer notification as the opening of a rate conversation and arrive with the analysis done.

After close:

6. Verify what you're actually being paid under the surviving arrangement. Effective dates, credentialing lags, and loading errors mean the rates in the system frequently don't match the rates in the agreement for months.

The uncomfortable truth

The payer has already run this analysis. Its contracting team knows which of the two fee schedules is lower, knows what its own change-of-control language permits, and knows most practices treat contract migration as back-office work. Price transparency didn't create this information asymmetry — but it did make it optional. The data to negotiate the combined entity's contracts from a position of knowledge is public. Whether anyone on the practice's side looks at it is a choice.

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Altitude Intelligence helps independent physician groups, ASCs, and community hospitals use Transparency in Coverage data to benchmark payer rates and negotiate from evidence. If your group is heading into a merger — on either side of it — the rate analysis should happen before the ink dries, not after.