Quick Summary
- Medicare’s new WISeR pilot program uses AI-assisted prior authorization to review selected services in Original Medicare.
- The program began on January 1, 2026, in Arizona, New Jersey, Ohio, Oklahoma, Texas, and Washington.
- CMS says WISeR is meant to reduce wasteful, inappropriate, or medically unnecessary care.
- Hospitals and lawmakers say the program is already causing care delays, with some patients waiting weeks longer for treatment.
- Reported delays include longer approval times for procedures such as pain injections and other outpatient services.
- Critics worry that AI and contractor payment incentives may lead to more denials or slower approvals.
- CMS says licensed clinicians, not AI alone, make non-payment recommendations.
- The biggest concern is whether Medicare can reduce waste without delaying necessary care for seniors.
- Patients affected by WISeR should ask their provider whether authorization is required and request written reasons for any delay or denial.
Medicare’s AI Prior Authorization Pilot Is Raising New Concerns Over Care Delays
A new Medicare pilot program that uses artificial intelligence to review certain medical services is drawing growing criticism from hospitals, lawmakers, and patient advocates who say the system is delaying care for seniors and creating new administrative burdens for providers.
Table of Contents
ToggleThe program, called the Wasteful and Inappropriate Service Reduction Model, or WISeR, began on January 1, 2026 and is scheduled to run through December 31, 2031 in six states: Arizona, New Jersey, Ohio, Oklahoma, Texas, and Washington. CMS says WISeR is designed to reduce wasteful or medically unsupported care in Original Medicare by using enhanced technologies, including AI and machine learning, alongside human clinical review.
But early reports from Washington state suggest the program may be creating the very problem Medicare beneficiaries fear most: waiting longer for medically necessary care.
What Is the WISeR Medicare AI Program?
WISeR is a Medicare Innovation Center model that applies prior authorization-style review to selected services in Original Medicare, also known as traditional Medicare. That is a major shift because prior authorization has historically been much more common in Medicare Advantage than in traditional Medicare.
CMS says the model targets services considered vulnerable to fraud, waste, abuse, or low-value use. Examples include skin and tissue substitutes, electrical nerve stimulator implants, and knee arthroscopy for knee osteoarthritis. CMS also says WISeR excludes inpatient-only services, emergency care, and services that would pose substantial risk if delayed.
In practice, providers can submit a prior authorization request before delivering a covered WISeR service, or they can proceed and face post-service, pre-payment medical review. CMS says recommendations for non-payment must be made by licensed clinicians, not AI alone.
Why Hospitals Say Seniors Are Waiting Longer
The controversy intensified after Washington hospitals reported that Medicare patients are waiting far longer for authorization decisions than expected.
According to Healthcare Dive, a report compiled by Sen. Maria Cantwell found that procedures that previously took about two weeks from approval to completion are now taking four to eight weeks under WISeR in some cases. Providers at the University of Washington Medical System reported average response times of 15 to 20 days for prior authorization requests, with nearly 100 patients waiting for epidural steroid pain injections because of delays.
That matters because many of the affected procedures are not abstract billing codes. They involve pain management, mobility, wound care, and chronic conditions. A delay can mean more days in pain, more medication use, postponed treatment, and worsening quality of life.
CMS Says WISeR Is About Reducing Waste
CMS frames WISeR as a patient-safety and taxpayer-protection model. The agency argues that some procedures in fee-for-service Medicare may be overused, clinically unsupported, or harmful when performed inappropriately. CMS says WISeR is intended to focus Medicare spending on services that improve patient well-being while discouraging unnecessary care.
That goal is not controversial by itself. Medicare waste, fraud, and abuse are real concerns. The harder question is whether AI-enabled prior authorization can reduce inappropriate care without blocking or delaying appropriate care.
The early evidence is mixed and politically charged. CMS has said it is monitoring the model and has not found evidence of inappropriate denials, while hospitals and patient advocates argue that delays, unclear denials, and added paperwork are already harming patients.
The Incentive Problem: Efficiency or Denial?
One of the biggest concerns is how WISeR contractors are paid.
CMS states that model participants receive a percentage of expenditures associated with averted wasteful or inappropriate care, adjusted by performance measures including provider experience.
Critics argue this creates a dangerous incentive: contractors may benefit financially when fewer services are paid. Even if the model includes human review and performance safeguards, the structure raises an obvious trust issue for patients and doctors. When an AI-assisted system says “no” or delays an answer, patients may wonder whether the decision is based on medical evidence or cost savings.
That concern is especially sensitive in Medicare because many seniors choose traditional Medicare precisely because it has historically involved fewer prior authorization barriers than private Medicare Advantage plans.
Why This Is Bigger Than One Pilot Program
The WISeR debate is not just about 13 or 17 procedures, depending on how services are grouped. It is about the future of AI in government healthcare decisions.
If WISeR succeeds, CMS could expand similar models across more states, services, or payment systems. If it fails, it may become a warning about using automation in high-stakes medical coverage decisions before the infrastructure, oversight, and transparency are ready.
Patient advocates have already warned that the rollout is causing confusion and complexity for beneficiaries and physicians. The Center for Medicare Advocacy cited reports of technical glitches, communication problems, and delays that providers say exceed federal timelines.
For AI to work safely in Medicare, patients and providers need more than speed. They need explainable decisions, clear appeal rights, transparent denial data, enforceable deadlines, and accountability when delays harm patients.
What Medicare Patients Should Do If Care Is Delayed
Patients in WISeR states should ask their doctor whether a planned service requires WISeR review. If a request is delayed or denied, patients should ask for the denial reason in writing, request the clinical criteria used, and discuss appeal options with their provider.
Patients should also document symptoms, pain levels, medication changes, rescheduled appointments, and any worsening condition during the delay. That documentation can matter if an appeal becomes necessary.
For providers, the early lesson is equally clear: prior authorization workflows need dedicated tracking, backup access for staff, and standardized documentation before requests are submitted. AI may be part of the review process, but administrative precision still determines whether patients move through the system smoothly.
The Bottom Line
Medicare’s WISeR model was designed to reduce wasteful care. But early reports from Washington suggest that AI-powered prior authorization may be delaying treatment, increasing paperwork, and leaving seniors stuck between medical need and administrative review.
The central issue is not whether Medicare should fight fraud or reduce unnecessary care. It should. The question is whether a system built to save money can be trusted to protect patients when the fastest path to savings may be saying “no,” saying “not yet,” or simply taking too long to answer.
Until CMS publishes clear denial rates, response times, appeal outcomes, contractor payments, and patient-impact data, WISeR will remain under scrutiny. In healthcare, efficiency is only progress if patients still get the right care at the right time.
FAQs
What is Medicare’s WISeR program?
WISeR stands for Wasteful and Inappropriate Service Reduction. It is a CMS pilot program that uses enhanced technology, including AI and machine learning, plus human clinical review, to evaluate selected services in Original Medicare before or during payment review.
Which states are affected by WISeR?
The WISeR pilot is running in Arizona, New Jersey, Ohio, Oklahoma, Texas, and Washington from January 1, 2026 through December 31, 2031.
Does WISeR apply to Medicare Advantage?
No. CMS says WISeR does not apply to people enrolled in Medicare Advantage. It applies to selected services in Original Medicare in the six pilot states.
Why are people concerned about Medicare AI prior authorization?
Hospitals and lawmakers say some patients are waiting longer for approvals and procedures, while providers face added paperwork and unclear denials. In Washington, some authorization responses reportedly took 15 to 20 days.
Is AI making the final Medicare denial decision?
CMS says recommendations for non-payment are determined by licensed clinicians using standardized criteria, although the model uses AI and machine learning as part of the review process.
