Whoever Owns the PCP Owns Your Referral

You've spent 3 years watching private equity buy dermatology practices down the street. The bigger acquirer skipped your market entirely and bought the primary care physicians who send you patients.

Optum employs or affiliates with about 90,000 physicians, by Optum's own account, or 1 in 10 US doctors. Optum and UnitedHealthcare share a corporate parent. So when a patient in an Optum-owned primary care office needs a skin check, the company deciding where that patient goes and the company deciding what the visit pays are the same company.

Vertical integration goes back decades, but the primary care base in a metro can now be concentrated enough that a dermatology practice loses referral volume without a single identifiable event. No contract gets terminated. No PCP calls to say they're sending patients elsewhere. The schedule just fills a little differently, quarter over quarter, until the referral mix looks nothing like it did 2 years ago.

A November 2025 study out of Brown and UC Berkeley found that UnitedHealthcare pays Optum-owned physician practices about 17% more than comparable practices it does not own, according to Brown's School of Public Health. In markets where UnitedHealthcare holds a large share of the local insurance business, that gap runs as high as 61%.

That's a payment finding, and the distinction matters. It says nothing about where any individual referral went. It documents one company setting the price it pays itself, well above what it pays you for the same work in the same market.

Medicare Advantage HMOs use PCP gatekeeping by default, which puts the referral decision with a physician who may be an employee of the plan's sibling company. Federal network adequacy rules under 42 CFR § 422.116 require plans to contract with a minimum number of specialists, dermatology included, and to meet time and distance standards. Those are floors. A plan can build a thin dermatology panel, clear adequacy review, and still leave a member with 2 realistic options in a county that has 15 dermatologists.

Prior authorization is the friction layer. MA plans denied about 7.7% of prior auth requests in 2024. Only 11.5% of those denials were appealed, and 80.7% of appeals were overturned, figures we broke down in April. UnitedHealth has since committed to eliminating 30% of prior auth volume by the end of 2026. Dermatology appears nowhere in the published reform commitments, which we flagged in May. We're inferring that from silence, and we'll say so rather than dress it up as documented policy. Practices are planning around it either way.

No peer-reviewed study quantifies insurer-employed primary care physicians steering dermatology referrals. We looked across federal filings and the health services literature. It's not there. Any vendor quoting you a specific derm steering percentage is quoting a number they invented.

The structure is well documented, and it explains the behavior on its own. An employed primary care physician makes referrals inside an EHR whose workflow surfaces in-group and in-network options first, where everything else takes extra clicks and, in gatekeeping plans, extra paperwork. Compensation models reward panel management and cost performance. None of that requires anyone to instruct a physician to send patients anywhere in particular. The default path is the fastest path, and a physician working through 30 referrals in an afternoon takes it.

Which is why this arrives late in your practice. A referral that never happens produces no denial, no appeal, and no line item on any report you already run. By the time the pattern is legible in the schedule, the relationship has been gone for months. The private equity version of this story, which we covered in March, moves the same way.

The Justice Department opened an antitrust investigation into the UnitedHealthcare and Optum structure in February 2024. As of mid-2026 it's still investigative, with no public complaint filed and nothing specific to the physician groups.

States are moving faster. California's SB 351 took effect January 1, 2026, codifying the corporate practice of medicine doctrine and giving the attorney general injunctive authority. That office used it in June against Carbon Health, forcing a restructuring of the professional corporation and management company relationship. The settlement carried $4.4 million in penalties, plus $100,000 against a co-founder personally. Oregon's SB 951 is the strictest MSO restriction in the country, and emergency physicians in Eugene have already invoked it against a national corporate medicine company. In February 2026, DOJ and the Ohio attorney general settled with OhioHealth on terms barring anti-steering, anti-tiering, and all-or-nothing contract clauses. That's the most transferable enforcement template anyone challenging integrated contracting has.

In July, a bicameral group of lawmakers introduced legislation to bar insurers from owning medical practices outright, per the New York Times. Most bills like that die in committee, and this one probably will. For planning purposes, insurer ownership is now a named target in Congress instead of a trade-press theory.

Clarity RCM manages revenue cycle for 200+ dermatology practices across 42 states. It's all we do. See how we work.