The Service Line

Private equity physician-practice deals are on pace to fall by half in 2026, and primary care is one of the specialties investors are pulling back from fastest. Physician practice management deal volume, which peaked at 851 transactions in 2021, fell to just 105 in the first half of 2026, according to PitchBook data reported by STAT News, as at least 25 states have proposed or passed laws restricting private equity control of medical practices, three of them, California, Oregon, and Rhode Island, taking effect this year. Private equity has spent roughly $1 trillion acquiring healthcare companies over the past decade, with dermatology, ophthalmology, gastroenterology, and primary care among the specialties most heavily targeted, the same capital-and-control model California’s attorney general went after in June’s $4.5 million settlement with Carbon Health over its primary care management-company structure, covered in this newsletter August 3. Rhode Island Attorney General Peter Neronha, whose state’s new oversight law took effect this year, said private equity and consolidation “drive up the cost of care, further inhibiting patient access.” For primary care ACOs and enablement platforms that have relied on private equity and venture capital to fund practice acquisition and risk-bearing infrastructure, a 50 percent contraction in deal flow is a capital-availability signal as consequential as any single rule change. Confidence: High, deal-volume figures are PitchBook data reported by STAT News; state law counts are corroborated by Stateline. Sources: Private equity takeovers of physician groups down by half in 2026, STAT, As states tighten oversight, private equity’s healthcare deals decline, Stateline, Attorney General Bonta Announces First-of-Its-Kind Settlement with Carbon Health, California Department of Justice.

Reimbursement: NAACOS says CMS’s own REACH-to-LEAD glide path is too short, and CMS has not answered

The National Association of ACOs (NAACOS), whose members include most of the country’s Medicare Shared Savings Program (MSSP) and ACO REACH participants, has told CMS it supports the ten-year length of the LEAD Model but says a January 1, 2027 start does not give ACO REACH’s roughly 115 current participants enough time to evaluate their options and plan a transition, and has asked CMS to extend ACO REACH through 2027 so participants get what NAACOS president and chief executive officer Emily Brower calls a seamless glide path. CMS has not, in documents reviewed this run, agreed to the extension; instead, accepted LEAD applicants move directly into a no-financial-risk Implementation Period beginning September 15, 2026, two weeks after this issue publishes, with Performance Year 1 starting January 1, 2027 regardless of whether ACO REACH is extended in parallel. For REACH ACOs still waiting on an acceptance notice, the practical question is no longer which LEAD payment option to choose, the menu this newsletter covered August 3, but whether they will have any Medicare accountable care model to operate under in a gap CMS has not yet closed. Confidence: Medium, NAACOS’s position is a public advocacy statement, not a CMS commitment, and CMS has not published a response. Sources: LEAD Model, NAACOS, CMMI releases long-term ACO model that supports high-need patients, Healthcare Finance News.

Enforcement: a Medicare Advantage audit appeal is still undecided, and CMS isn’t waiting for the answer

The Trump administration is appealing a September 25, 2025 ruling from a Texas federal court that vacated CMS’s 2023 rule allowing it to extrapolate Medicare Advantage risk-adjustment audit findings across an entire health plan contract; CMS filed its opening brief with the Fifth Circuit, case number 25-11293, in March 2026, and no ruling has been issued as of this run. CMS has not paused the underlying audits while the appeal is pending. It began auditing payment year 2020 in early 2026 on what it says will become a quarterly cadence covering every RADV-eligible Medicare Advantage contract, more than 550 plans, once fully phased in, with federal and MedPAC estimates of Medicare Advantage overpayments ranging from $17 billion to $76 billion a year depending on the source cited. Primary care ACOs and enablers carrying Medicare Advantage risk are underwriting audit exposure for coding programs built before V28’s full phase-in without knowing whether extrapolated recoupment will ultimately survive on appeal. Confidence: Medium, the appeal status and audit cadence are well-documented by CMS and trade press, but the overpayment estimates vary widely by source and the appellate outcome is unresolved. Sources: CMS Rolls Out Aggressive Strategy to Enhance and Accelerate Medicare Advantage Audits, CMS, CMS presses ahead on accelerated Medicare Advantage audits, Healthcare Dive, Court Rules That CMS Cannot Extrapolate Medicare Advantage Risk Adjustment Audit Results, Groom Law Group.

Who’s Buying: an in-home primary care ACO keeps buying while the broader private equity market freezes

Bloom Healthcare, an accountable care organization that provides in-home primary care to homebound seniors, announced August 31 that it has acquired Christian Care House Calls, a Dallas-Fort Worth home-based primary care practice, with Christian Care’s providers and patients transitioning to the Bloom name; deal terms were not disclosed. The acquisition lands as Bloom tells trade press it is watching CMS’s LEAD Model, ACO REACH’s ten-year successor, for the operational guidance it needs to finalize its own transition plan, and is deploying ambient-listening artificial intelligence tools to keep clinicians efficient as they manage more complex, home-based patients. It is a small data point against a large trend: even as the broader physician-practice private equity market cuts deal volume in half this year, capital and consolidation keep flowing to the home-based, value-based primary care niche that both LEAD and MSSP are explicitly designed to reward. Confidence: Medium, the deal itself is company-disclosed; the broader read-across to capital flows is this newsletter’s analysis, not a sourced claim. Sources: Bloom Healthcare Expands Dallas-Fort Worth Presence with Acquisition of Christian Care House Calls, GlobeNewswire, Bloom Healthcare Looks To LEAD Model, Technology To Support In-Home Primary Care, Home Health Care News.

Clinical Policy: fewer than half the primary care doctors the shortage areas need exist, and almost none of the gap is in cities

The federal government has designated 8,467 primary care Health Professional Shortage Areas as of the end of 2025, covering more than 92 million Americans, with those areas currently meeting only about 48 percent of the primary care physician need the federal formula calculates, according to Health Resources and Services Administration data compiled by KFF; closing the remaining gap nationwide would take roughly 15,600 more primary care physicians than the workforce currently has. The maldistribution compounding that shortage is geographic: 2026 physician-preference survey data from recruiting firm The Medicus Firm puts only 9.3 percent of physicians in small-town or rural practice against 40.4 percent in major metropolitan areas, even as younger adults move into rural counties at the fastest rate in nearly a century. For MSSP and REACH-to-LEAD ACOs whose attribution and benchmark math depends on beneficiaries having a primary care doctor to be attributed to, workforce scarcity is now as much a benchmark risk as a staffing problem. Confidence: Medium, the HPSA figures are HRSA data via KFF’s compilation; the rural-practice percentages come from an industry recruiting-firm survey, not a government source. Sources: Primary Care Health Professional Shortage Areas (HPSAs), KFF State Health Facts, The Rural Doctor Shortage in 2026, The Medicus Firm.

The Operator Metric: a 0.49-percentage-point wedge Medicare just built between value-based and fee-for-service primary care

CMS’s proposed CY2027 conversion factors, $33.1693 for clinicians who meet participation thresholds in advanced alternative payment models such as MSSP or ACO REACH’s successor, and $32.8409 for everyone else, work out to a 1.19 percent cut for the first group and a 1.68 percent cut for the second, a roughly half-point gap layered on top of the existing statutory split. Applied across a typical primary care panel’s annual Medicare fee-for-service billing, the wider cut for non-APM clinicians is the clearest dollar-for-dollar financial argument CMS has built yet for staying inside MSSP, ACO REACH, or LEAD rather than remaining independent fee-for-service, and it is still only a proposal until the comment period on CMS-1848-P closes September 14, 2026. Confidence: High, both conversion factors and their percentage changes are stated directly in CMS’s proposed rule. Source: Calendar Year (CY) 2027 Medicare Physician Fee Schedule Proposed Rule, CMS.