Optum Health's $23.47 billion of second-quarter revenue included $14.35 billion from affiliated customers, principally transactions within UnitedHealth Group. The WellMed stake sale changes who owns part of the care-delivery surplus while the same provider capitation can remain medical expense at UnitedHealthcare (UnitedHealth Group Form 10-Q, August 2026).

In September 2026, TPG acquired an undisclosed interest in Florida clinics within WellMed's senior-care network (Insurance Journal, September 2026). Hours later UnitedHealth said its second-quarter outlook was unchanged (Wells Fargo conference transcript, September 2026), including adjusted earnings of $19.50 to $20.00 per share and roughly $24 billion of operating cash flow (UnitedHealth Group Form 8-K, July 2026).

Key Takeaways

  • $14.35 billion of Optum Health's second-quarter revenue came from affiliated customers, equal to 61% of its $23.47 billion total before UnitedHealth's intercompany eliminations.
  • A 5.1% operating margin improved from 1.7% a year earlier even as Optum Health served 700,000 fewer value-based care patients and revenue fell 5%.
  • About 2% in 2026 is the latest Optum Health margin guide, followed by about 4% in 2027 and 6% in 2028, with a broader 6% to 8% target range for 2028.
  • 90% of WellMed's Medicare Advantage patients were under full medical-cost risk in UnitedHealth's 2024 study, placing the clinic's surplus directly behind utilization and severity performance.
  • A 2.48% payment increase is CMS's net average for 2027, while its diagnosis-source exclusions are separately projected to save the Medicare trust funds $6.84 billion.

The Florida Stake and Optum's Margin Path

UnitedHealth disclosed neither the price nor the ownership percentage. CFO Wayne DeVeydt described an operating partnership: "We didn't need the dollars, we have the dollars to invest, but we needed the focus and somebody that could actually work with us locally" (Insurance Journal, September 2026). UnitedHealth is opening about 15 Florida clinics each year.

DeVeydt put Optum Health's full-year margin near 2% in 2026, 4% in 2027 and 6% in 2028. At the same conference, Optum Health CEO Krista Nelson described 6% to 8% as the 2028 target range and said patient-facing hours grew 12%, or 200,000 hours, in the first half (Wells Fargo conference transcript, September 2026).

Optum Health, second quarter20262025
Total revenues$23,472M$24,725M
Earnings from operations$1,190M$429M
Operating margin5.1%1.7%
Revenue from affiliated customers$14,353M$15,845M

The quarter explains why the stake matters more than its undisclosed price. Revenue fell 5% after Optum shed about 700,000 value-based care patients, yet operating earnings rose 177%. Annualizing the quarter puts segment revenue near $94 billion, where a 6% margin equals roughly $5.6 billion of operating earnings. TPG now participates in one asset expected to support that expansion.

TPG has the capacity to finance clinic growth. Its second-quarter filing reported $326.8 billion of assets under management, $76.2 billion of available capital and $16.1 billion raised during the quarter (TPG Form 10-Q, August 2026). The transaction supplies an operator and an owner with a separate return requirement.

Capitation Across the Medical Expense Line

CMS permits an MA organization to include an entire per-member-per-month provider capitation in incurred claims when it covers clinical services, including embedded provider administration (CMS MLR filing instructions). The plan records the fixed payment in its benefit ratio while the delegated clinic records revenue and bears the medical-cost variance inside the covered bundle.

UnitedHealth's segment note shows the scale of that transfer without isolating WellMed. Optum Health received $14.35 billion from affiliates during the quarter, down from $15.85 billion a year earlier. UnitedHealth's group medical care ratio improved to 86.7% from 89.4%, while Optum Health's margin improved to 5.1% from 1.7%.

If the WellMed capitation contract did not change at closing, TPG's ownership does not by itself change the amount UnitedHealthcare records as medical cost. A retained controlling interest would keep the clinics consolidated, with TPG's share represented through noncontrolling interests. Loss of control would move the clinic revenue outside Optum Health and turn the payment into third-party expense, even if member care and capitation were unchanged.

The pricing tension appears when the contract renews. UnitedHealthcare expects its 2026 Medicare Advantage margin in the upper half of a 2% to 4% range (Healthcare Dive, September 2026). CMS's 2027 rate announcement adds 2.48% before expected risk-score trend, or 4.98% including it (CMS, April 2026). That revenue has to fund both plan margin and the delegated clinic's return.

Reserving moves with the risk transfer. UnitedHealth reported $38.93 billion of medical costs payable, including $26.5 billion of incurred-but-not-reported claims, at June 2026. Global capitation replaces part of the plan's service-level claim uncertainty with a fixed payment, while the clinic absorbs covered utilization and severity. The plan retains settlement, carve-out and counterparty exposure.

actuary.info's county-level tracking of UnitedHealthcare's 2027 posture found 34 potential exits across 12 states, affecting about 20,000 members. The same insurer is narrowing counties while adding an outside return requirement to delegated care serving the population it keeps.

Control, Return Requirements and Risk-Score Pressure

The ownership percentage remains the decisive missing term. Without it, Optum Health's future revenue and margin cannot be compared cleanly with the 2026 base: consolidation could preserve the full clinic result, while deconsolidation would shrink the segment denominator before any operating improvement.

UnitedHealth's own study places 310,000 Medicare Advantage patients in WellMed's employed practices across Texas and Florida, with about 90% under full medical-cost risk. Florida practices showed 5.6% lower cost and 2.1% higher quality than hospital-based practices (UnitedHealth Group research, January 2026). Those are company-produced comparisons, but they identify the operating spread TPG is buying.

The revenue side is tighter. CMS retained the fully phased-in 2024 risk model for 2027, then excluded diagnoses from audio-only encounters and most unlinked chart reviews. CMS estimates those source restrictions will save the Medicare trust funds $6.84 billion in 2027 (CMS Rate Announcement, April 2026). A clinic can improve utilization while still receiving less risk-adjusted capitation than its historical coding process implied.

That combination fixes one Optum problem and hardens another. TPG can supply local operating focus and capital, but its share of clinic earnings makes the delegated rate a negotiated return allocation rather than a wholly internal transfer. The 2.48% average payment increase has to absorb that allocation, the plan's 2% to 4% margin and the medical variance on a WellMed book carrying full risk for nine of every ten MA patients.

Further Reading

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