UnitedHealth’s $3 billion AI push has bots calling doctors

UnitedHealth Group is placing a massive bet on artificial intelligence, committing $3 billion over 2026 and 2027 to transform how the largest U.S. health insurer operates — from AI bots that call doctors' offices to schedule appointments for patients, to systems that read medical charts aloud for visiting nurses, to algorithms that listen in on millions of customer service calls to identify complaints.

The company says it's seeing a 2-to-1 return on its AI investment, with executives framing the technology as a way to reduce friction for patients and cut the $80 billion that insurers and medical providers collectively spend annually on administrative transactions, according to a Morgan Stanley research note.

But the question of whether AI can earn trust in an industry where the public is already deeply skeptical may be UnitedHealth's biggest challenge yet.

## AI That Calls Your Doctor

One of the most striking applications UnitedHealth is testing involves AI agents that call doctors' offices to schedule appointments for patients. It's a vivid illustration of how far the technology has penetrated healthcare operations — and how quickly the line between human and machine interaction is blurring.

The company has more than a thousand AI use cases in development, 20,000 AI engineers on staff, and 117 large language models available for internal use, according to Sandeep Dadlani, CEO of UnitedHealth's Optum Insight division. Almost 99% of those applications are administrative rather than clinical, he emphasized.

"We are not getting into diagnostic AI," Dadlani said in an interview at the company's Minneapolis headquarters.

## The Trust Problem

A Gallup survey found that 69% of respondents had little or no trust in businesses to use AI responsibly. For health insurers — already among the least trusted industries in America — that skepticism cuts even deeper.

About half of insured Americans have encountered barriers to care including delays and denials, according to polling from health researcher KFF. UnitedHealth already faces class action lawsuits claiming it relied on an algorithm to limit care, including denials of post-acute admissions after hospital stays. The company disputes these claims and says the algorithm was not used to make coverage decisions.

A federal inspector general report found that companies using the naviHealth algorithm — a UnitedHealth subsidiary — had higher denial rates, but those denials were almost always overturned on appeal.

"You have to gain trust, earn trust through your actions," said Tim Noel, who succeeded Brian Thompson as head of UnitedHealth's insurance division. Thompson's killing in December 2024 sparked a public backlash against insurance industry practices that the company is still navigating.

## The Business Case

UnitedHealth says it expects to reduce operating costs by nearly $1 billion this year, largely driven by AI. One early success: a system called Optum Real that allows medical providers to check in real time whether a service is covered, processing about a billion transactions since launching last year.

The company's stock has risen 21% this year after slumping by more than a third in 2025, suggesting Wall Street is buying the AI narrative.

But the tension is clear. UnitedHealth invited reporters to its Minneapolis headquarters this week — an unusual move for a company that has historically limited press engagement — in what appeared to be a clear effort to shape public perception that AI implementation would benefit patients, not just the bottom line.

Dadlani was careful with his language: "We only approve using AI. We never deny using AI." The implication — that AI expands access rather than restricts it — is the message UnitedHealth is spending heavily to convey.

## What This Means For You

Whether you're insured through UnitedHealth or not, the company's AI push will reshape your healthcare experience:

- **Faster approvals**: Real-time coverage verification and AI-accelerated prior authorizations could reduce the wait times that frustrate patients and providers alike. If your doctor can instantly see what's covered, you spend less time on hold and less time fighting denials.

- **AI on the phone**: When you call your insurer, there's an increasing chance an AI system is listening — not just routing your call, but analyzing what you say and flagging complaints. This could mean faster resolution or it could mean your concerns are being processed through a system designed to minimize cost.

- **The denial question**: The biggest unresolved issue is whether AI will ultimately be used to say yes more often, or to say no more efficiently. UnitedHealth insists it's the former, but the lawsuits and inspector general findings suggest the answer isn't settled yet.

- **Your data**: With 117 internal AI models processing millions of interactions, the volume of personal health data being analyzed is enormous. How that data is protected, shared, and used remains an open question that regulators and patients alike are only beginning to ask.

UnitedHealth's $3 billion gamble is either the future of healthcare efficiency or a high-tech version of the same system that already frustrates millions of Americans. The technology itself won't determine which — the choices about how it's deployed will.