Deal trackers count every ABA acquisition. No comparable dataset follows the solo and small practices that close, in a year of rising fixed compliance costs.
Key Takeaways
- The exit side of the ABA market goes unmeasured. Mergium Advisors counted 22 pediatric therapy transactions in the first half of 2026 and tracked the buyer composition in detail, while Acuity identified no public dataset following closures among solo and small practices. The industry’s picture of consolidation is one-sided by construction.
- Compliance requirements increasingly carry fixed costs. Alabama now requires ABA providers to enroll from a physical facility with visible business signage, and MassHealth requires accreditation from center-based providers by January 1, 2027 and all others by January 1, 2028. Those obligations cost close to the same whether a provider carries one caseload or one hundred.
- Medicaid rate volatility runs in both directions. Wyoming restored waiver ABA codes in July 2026 after a funding cliff dropped 97153 to $7.00 per unit, while Alabama has held the same code at $10.00 since at least October 2023. What separates providers is runway, not the direction of the swing.
- Closures that explain themselves are the exception. Stepping Stones Behavioral Solutions named Medicaid payment holds and an Anthem network termination when it shut down in June, giving regulators and reporters something to test. Most small closures leave a sentence on a website.
Advantage Autism and Therapy Services stopped providing Applied Behavior Analysis on July 31. The entire public record of that fact is a Weebly page. Brianna Harvey, the Board Certified Behavior Analyst who founded the practice in Atalissa, Iowa, posted a note in May thanking the families she had worked with, describing her effort to move active clients to other providers, and listing two ABA practices in nearby Muscatine by name, with addresses and phone numbers. Acuity found no accompanying filing, press release, or regulatory notice. A practice that served families around Muscatine for five years wound down, and the documentary trace it left would fit on an index card.
Now consider the other end of the same market. Mergium Advisors counted 22 pediatric therapy transactions in the first half of 2026, tracked the buyer composition closely enough to report that private equity-backed platforms accounted for roughly 65 percent of them, and put the current number of sponsor-backed platforms in the sector at about 93. Rival trackers dispute those totals on definitional grounds, itself a measure of how much attention the acquisition side attracts. Nobody disputes how many small practices closed this year, because nobody has produced a number to dispute.
That asymmetry shapes what the field believes about itself. Consolidation is legible because consolidation generates documents: purchase agreements, press releases, advisory-firm reports, occasionally a bankruptcy docket. Attrition at the bottom of the market generates none of those, so it enters the conversation as anecdote, which is a weak substrate for policy argument and an easy one for a state agency to wave off.
What the ABA Industry Counts, and What It Does Not
The measurement gap is uneven by design rather than by neglect. Acuity’s own coverage reflects it: closures reach these pages when they generate paper. Zoe Center for ABA filed for Chapter 11 protection in Georgia. Stepping Stones Behavioral Solutions in Indianapolis sent families a letter naming its causes, among them Medicaid payments held from November 2025 to February 2026, a consolidation from seven locations to four, and removal from Anthem’s Medicaid network in April. Those are reportable events with dates and counterparties. A behavior analyst who concludes in the spring that the coming year does not work produces nothing comparable.
Nor is there an obvious place to look for the aggregate. State Medicaid agencies publish enrolled provider directories, but those lag terminations, carry inactive listings, and rarely distinguish a one-person practice from a corporate entity sharing a billing address. Federal audits have generated granular accounts of improper ABA spending without any parallel accounting of who left. Acuity could not identify a public dataset that tracks ABA practice closures by size, in any state.
ABA Compliance Costs Are Increasingly Fixed, Not Proportional
This matters more now than three years ago because the compliance burden has been shifting from variable to fixed. A rate cut scales down: a provider billing fewer hours loses proportionally less. An accreditation requirement holds steady regardless of volume, and so does a facility requirement, a credentialing renewal cycle, or the cost of answering an audit letter competently.
Alabama supplies the clearest illustration. Among the Provider ALERTs the state issued in early 2026 was a February 24 enrollment requirement that the service location for an ABA provider be a physical facility carrying visible signage bearing the name of the business. The alert excludes home residences, cubicles inside an office space, and shaped spaces within another business, gave existing providers 30 days to comply, and made unannounced site visits part of enrollment. For a company operating centers, that is a signage vendor and an afternoon. For a behavior analyst who delivers services in client homes and runs the administrative side from a spare room, it is a lease.
Alabama kept tightening from there without touching what it pays. A May 18 alert limited ABA-qualifying diagnoses to licensed psychologists, psychiatrists, and pediatricians, excluding nurse practitioners and physician assistants. A June 15 alert then required pediatricians to add a specialty designation by July 1 or lose the ability to support ABA referrals, and the agency paused that deadline three days later pending further guidance. Through all four actions the core treatment rates held at $10.00 per 15-minute unit for technician-delivered care.
Massachusetts is running the same logic through accreditation. The MassHealth vendor contract requires ABA providers to hold accreditation from a nationally recognized body by January 1, 2027 for center-based providers and January 1, 2028 for everyone else, and Point32Health has carried those deadlines into its Harvard Pilgrim and Tufts contracting across its service area, holding center-based providers in Massachusetts and Rhode Island to the 2027 date and moving center-based providers in New Hampshire, Maine, and Vermont to 2028. Accreditation is a defensible answer to documented quality problems, and providers have argued for it as a fairer alternative to retrospective billing audits. It is also a sustained administrative undertaking whose cost falls in absolute rather than proportional terms.
The state has half-conceded the scale question in its own paperwork. The small business impact statement filed alongside the proposed re-adoption of 101 CMR 358.00 counts 197 providers governed by the ABA rate regulation and works item by item through whether the rule obliges small businesses to hire staff, retain professionals, or add administrative oversight. The exercise presumes a population of small operators without offering any way to count them.
Credentialing sits underneath all of it. Stepping Stones cited monthslong insurance credentialing backlogs among the conditions that left it delivering care without payment. Harvey’s site documents an earlier version of the same friction from the other end of the scale: a 2020 post describing how Blue Cross Blue Shield cleared her to submit claims but denied in-network status partly because she lacked a handicap-accessible location, and how she settled on building an ADA-compliant ramp to her basement office rather than rent space the practice could not carry. A requirement written for clinics reaches a home office as a construction project.
Medicaid ABA Rate Volatility Without a Balance Sheet
Reimbursement volatility compounds the exposure, and the movement runs both ways. Wyoming’s July 2026 fee schedule restored waiver ABA codes to pre-pandemic levels after enhanced federal funding lapsed and dropped 97153 from $19.23 to $7.00 per unit. Indiana cut rates 6 percent in April 2026 with a further 4 percent scheduled for April 2027. Iowa, where Advantage Autism operated, raised ABA rates 5 percent effective July 1, 2024 under a legislative appropriation, and Acuity found no subsequent ABA-specific rate action there through August 2026.
A multistate platform absorbs that churn across a diversified payer mix. A solo practice holding one or two contracts in one county experiences the identical movement as a cliff. The difference lies in runway: how many months a provider can keep operating while waiting for a correction, an appeal, or a legislature. Stepping Stones described three months without Medicaid payment as devastating and said it never fully recovered, and it had seven locations at the time.
Audit exposure works along the same axis. Federal OIG reviews of Medicaid ABA spending have identified at least $56 million in improper payments in Indiana and at least $18.5 million in Wisconsin, and STAT reported in March that the Colorado audit alone found $285.2 million in improper and potentially improper payments across 2022 and 2023. Those findings target state program administration. They reach providers downstream as documentation demands and recoupment letters, and answering one properly takes counsel that most small practices do not keep on retainer.
Why the ABA Closure Data Gap Is Worth Closing
The practical case for measuring exits is that access arguments currently rest on assertion. Providers testifying for higher rates describe thinning participation, as Massachusetts providers did before the Joint Committee on Health Care Financing. Enrollment counts, the metric agencies actually hold, can look stable through all of it, because rolls carry providers who quietly stopped accepting new clients years ago. A count of active practices by size, refreshed annually, would settle a recurring argument that both sides now conduct on intuition.
Several of the components already exist. MediRate tracks rate changes across states and service lines. Advisory firms track transactions rigorously. The credentialing and licensure infrastructure behavior analysts already maintain holds most of the underlying information. What nobody has assembled is the series showing whether the smallest providers are leaving faster than the market replaces them, which is the question every rate hearing implicitly turns on and none can answer.
There is a hint of it in the deal data, read sideways. New platform formation slowed to three transactions in the first half of 2026, down from ten across all of 2025, and Dr. Luis F. Lopez of Mergium attributed the slowdown to a shortage of high-quality platform assets rather than any cooling of investor appetite. Founder-owned practices with the scale to anchor a platform have become scarce. Whether that scarcity reflects successful exits, arrested growth, or quiet closures is precisely what the available data cannot distinguish. Advantage Autism appears in none of it, and neither will whichever practice closes next month.
