Cohere Health review: prior authorization automation examined

What Cohere Health is

Cohere Health sells software to health plans, not to patients or, directly, to prescribers. Its platform sits inside a plan's utilization management operation: the unit that decides whether to pay for a requested treatment, medical service, or procedure. According to the company's own site, the product line has grown from prior authorization review into payment integrity, appeals handling, care management, and quality measurement, all built on what it calls a shared "clinical intelligence" layer.

The mechanics are straightforward on paper. A provider submits a request, either through Cohere's own portal or, since 2024, directly from Epic's EHR via Epic's Payer Platform. Cohere's system checks the request against the plan's medical policy and the patient's history. If the case is routine and clearly meets the policy, it approves automatically. If it doesn't, a nurse or physician reviewer takes over. Cohere Health states that roughly 85% of requests get a real-time decision this way, a claim that's consistent across several of its own pages, though it is the company's own figure rather than an independently audited one.

Who actually uses it

Two named partnerships give the clearest picture of Cohere Health in practice. Humana expanded its use of the platform nationally in 2021 after a nine-state pilot, and its chief medical officer at the time went on record about the results (see the quote below). Geisinger Health Plan partnered with Cohere in 2022 to run utilization management across several service lines. Beyond these two, the company says it serves 17 clients covering roughly 25 million lives and 420,000 providers, but it does not publish a full client list, so most of that reach is unverifiable from the outside.

The more consequential recent development is regulatory rather than commercial. In 2025, the Centers for Medicare & Medicaid Services named Cohere Health as one of six technology vendors running its WISeR Model, a pilot that applies AI-assisted prior authorization to a defined list of services in Original Medicare across several states, including Texas, where Cohere is the assigned vendor working through the Medicare administrative contractor Novitas. That's a genuinely different kind of validation: CMS chose Cohere to help administer a federal program, not just a commercial contract. It's also worth being precise about scope, since this site's focus is Medicare Part D drug coverage: WISeR covers medical services and procedures under Original Medicare, not Part D prescription drugs, so it sits adjacent to rather than inside this site's usual territory.

Published outcomes vs. open questions

The table below separates what Cohere Health (or a named partner) has put a specific, checkable figure on, from what remains vague, self-reported without detail, or simply undisclosed.

The WISeR question worth sitting with

CMS pays WISeR vendors, Cohere Health included, in part based on the savings they identify from reducing what the program calls wasteful or inappropriate services. Healthcare finance commentators have pointed out that this creates an incentive structure worth watching closely: a vendor paid partly on denials avoided has a financial reason to deny more, not less. That's not an accusation against Cohere specifically, and no source we reviewed alleged that Cohere's own denial rate under WISeR is out of line. But it's a structural feature of the program Cohere is now part of, and it's more relevant to due diligence than any marketing claim on the company's own site.

Separately, physician groups have raised broader concerns this year about AI's role in prior authorization generally, including higher denial rates when automated systems review claims with little human oversight. We found no source naming Cohere Health specifically in that criticism, but it's the industry context any plan or provider group should hold in mind when reading a vendor's own performance figures.

“In just nine months, the results of Cohere's digital authorization platform have exceeded our expectations.”

Where it fits in a workflow

Picture a mid-sized regional health plan running its own utilization management team for physical therapy and imaging referrals. Today, a nurse reviewer manually checks each fax or portal submission against a policy document, and a backlog builds every Monday. If that plan deployed Cohere-style software, the bulk of routine, policy-clear requests, say, a standard MRI referral that matches diagnostic guidelines exactly, would clear automatically within minutes, with the reviewer's time redirected to the harder, ambiguous cases: unusual diagnoses, requests that partially meet policy, or ones flagged for a peer-to-peer conversation. This is an illustrative scenario built from how the company describes its own deployment model, not a real customer's account.