The Peer-to-Peer Review Is a Game Nobody Teaches You. Here Is How Providers Win It.
Peer-to-peer reviews overturn more than half of prior authorization denials when providers come prepared. A PA-C shares the playbook: before, during, and after the call.
At some point in your career, an insurance company will deny something your patient needs, and the only path to reversing it will be a phone call. Five to ten minutes with a clinician you have never met, employed by the company that issued the denial, on a line you may have waited 30 minutes to reach. This is the peer-to-peer review. Nobody covers it in training. There is no continuing education credit for it. And yet for many denials it is the single highest-leverage conversation in the entire authorization process.
I have prepared for these calls and sat through them, and the thing that strikes me most is the asymmetry. The reviewer on the other end does this all day, every day, with a script and a quota. The clinician calling in is usually doing it between patients, from memory, for the first time that month. Closing that gap is the whole game. This post is the preparation I wish someone had handed me.
What a Peer-to-Peer Review Actually Is
A peer-to-peer review is a scheduled phone conversation between the ordering clinician and a clinician working for the insurer, usually titled a medical director. The official purpose is to discuss the clinical justification for a denied or pending prior authorization request. The unofficial purpose, according to people who have worked inside the system, is often something closer to friction. Reporting by STAT in late 2025, built on interviews with physicians and former insurance insiders, described a process that frequently functions to deflect rather than to genuinely reconsider, with calls that are hard to schedule, reviewers who cannot approve anything, and windows that quietly expire.
That is the cynical view, and I share it about half the time. Here is the other half: the same body of industry data shows that peer-to-peer conversations overturn more than half of the denials they touch, with some analyses putting the figure between 58 and 65 percent, resolving in days rather than the weeks a written appeal takes. Both things are true. The process is designed to be inconvenient, and it works for the providers who show up prepared anyway. The deniers are counting on you not making the call. The numbers say making it is worth your time.
The reviewer does this all day with a script. You are doing it between patients from memory. Closing that gap is the whole game.
The Qualification Problem on the Other End of the Line
The word “peer” is doing a lot of unearned work in this process. In American Medical Association survey data, only about 15 percent of physicians who participated in these reviews said the health plan’s reviewer often or always had the appropriate qualifications to evaluate the case. More than a third said the insurer’s clinician rarely or never had the relevant expertise. The classic example, cited by the association itself, is an obstetrician reviewing a neurosurgery request.
| How physicians rate the insurer’s “peer” | Share of physicians |
|---|---|
| Reviewer often or always has appropriate qualifications | 15% |
| Reviewer rarely or never has the relevant expertise | 34% |
Physicians rate the “peer” on the other end of the call. Chart: Benjamin Hillman, PA-C.
Data: American Medical Association physician survey data on peer-to-peer reviews.
This matters tactically, not just as a grievance. A reviewer outside your specialty cannot argue clinical nuance with you. They are reading criteria off a screen. That means your job on the call is not to win a medical debate. It is to map your patient onto their checklist so cleanly that approving becomes the path of least resistance. Once I understood that, my preparation changed completely.
Before the Call: Where the Review Is Actually Won
Step 1. Get the denial reason in writing first
Never schedule the call blind. Under the federal rules that took effect in January 2026, plans in Medicare Advantage, Medicaid, and the marketplaces must give a specific reason for every denial. Demand it. The entire call gets built around rebutting that one stated reason, and I have watched calls go sideways because the clinician was arguing against a reason the insurer never gave.
Step 2. Pull the payer’s own clinical criteria
Every major insurer publishes the clinical policy it uses for each service. Find the policy number for the denied service, print it or have it open, and highlight the specific criteria your patient meets. You are going to quote their document back to them. In my experience nothing changes the temperature of these calls faster than the reviewer realizing you are looking at the same page they are.
Step 3. Build a one-page case summary
Diagnosis with date. Relevant findings. Conservative treatments tried and failed, with dates and outcomes. Why the requested service is the indicated next step, phrased in the language of the payer’s criteria. One page, because the call is ten minutes and you will not get to page two.
Step 4. Schedule it like it matters, because it does
Many payers give you a narrow window to request the call, sometimes 24 to 72 hours from the denial, and they will let it lapse without ceremony. Request it the same day the denial lands. Block actual calendar time. Industry guidance and physician reports both note that if you cannot wait through a 30-minute hold, the case can simply be closed, which is exactly as maddening as it sounds.
During the Call: Scripts That Change the Dynamic
These are phrasings I keep within reach. They are polite, professional, and they each do a specific job.
“Before we start, can I get your name, credentials, and specialty for my documentation?”
Why it works: it is a completely reasonable request that signals this call is being documented. If the reviewer is outside your specialty, you now have that fact on the record for the written appeal.
“I have your clinical policy for this service open in front of me. Can you tell me which specific criterion this request failed?”
Why it works: it converts a vague medical-necessity argument into a checklist conversation you have already prepared for. Vague denials do not survive specific questions.
“What additional information would change this decision? I want that documented, because I will be including it in the formal appeal and the external review.”
Why it works: it forces a concrete answer you can either satisfy or cite later, and it signals you know the appeal ladder does not end with this phone call.
“Given that this is a [specialty] case, I am requesting review by a clinician in the same or a similar specialty, and I would like that request noted.”
Why it works: a growing number of state reform laws require same-or-similar specialty review, and the insurers’ own June 2025 pledge committed to medical necessity reviews by appropriately qualified clinicians. Even where it is not legally required, the request on the record strengthens every later step.
One more during-the-call habit that costs nothing: write down the time the call started, the time it ended, and every factual claim the reviewer makes. If the denial stands and you escalate, that contemporaneous record is the difference between your word and a transcript-grade account.
After the Call: The Part Everyone Skips
The appeal math explains why the after-the-call step matters so much. In Medicare Advantage in 2024, four out of five formally appealed denials were overturned, yet barely one denial in ten was ever appealed at all. A failed peer-to-peer is not the end of the road. Statistically it is barely the middle. I wrote a full breakdown of what to do when the denial lands in a companion post on the first 72 hours after a denial.
The Bigger Picture, Honestly
I want to name the obvious thing. None of this should be necessary. A system where a trained clinician must out-prepare a stranger in a ten-minute phone game to deliver indicated care is a system with its priorities inverted, and no amount of script polish fixes that. The fixes that matter are structural: the federal deadlines and denial-reason requirements that took effect this year, the state laws requiring real specialty matching, and the public reporting that is finally exposing how often these denials fail scrutiny. I have covered those changes in detail in my post on the 2026 prior authorization rule, and the early evidence from Medicare’s new artificial intelligence review pilot suggests the pressure on providers is growing, not shrinking.
Until the structure changes, the call is the tool we have. Prepare for it like a deposition, run it like a checklist, and document it like it will be read by a regulator someday. Honestly, it might be.
Sources
- Just 15% of doctors say prior auth “peers” deserve that title — American Medical Association
- Fixing prior auth: Give doctors a true peer to talk with — American Medical Association
- Insurance peer-to-peer prior authorization can feel like a sham — STAT
- 6 Tips to Navigate Insurance Peer-to-Peer Reviews — symplr
- Over 80% of prior auth appeals succeed. Why aren’t there more? — American Medical Association
- Medicare Advantage Insurers Made Nearly 53 Million Prior Authorization Determinations in 2024 — KFF
- 2025 Prior Authorization Physician Survey — American Medical Association
- Prior Authorization Denial: Complete 2026 Appeal Guide — Muni Health
- What to Do if Health Insurance Denies a Prior Authorization — Keck Medicine of the University of Southern California