Employer-funded PBMs and your health plan: the big three and the transparent alternatives.
Discount cards sit beside your plan. These sit inside it. A pharmacy benefit manager contracted by the employer, rather than chosen by a carrier, changes how your plan’s drug claims are priced, reported and audited. Here is what each vendor says about itself and what we would ask before switching. For the cash-price side, see our cash-price pharmacy comparison.
What an employer-funded PBM is, how it is paid, and who it suits.
Based on vendor sites and trade press as of October 2026. Terms change, so confirm before you rely on any of it. See the side-by-side PBM comparison page.
What It Is
A pharmacy benefit manager the employer contracts with directly, usually for a self-funded plan, to process the plan’s pharmacy claims. It does the same job as the largest PBMs. What differs is the pricing model and how much of the data you can see. Try our free pharmacy rebate value calculator to run the numbers for your own group.
How It Gets Paid
Per Healthcare Brew, alternative PBMs generally earn a fee for service, such as an administrative fee per member per month, instead of keeping a share of negotiated discounts. Navitus said it takes no spread and signs contracts of about three years. You can test your own figures with our PMPM claims calculator.
Who It Suits
Self-funded employers and public entities that want claim-level data and a say in formulary design. A fully insured group usually cannot pick the PBM, because the carrier does. Ask your adviser whether your funding arrangement gives you that choice before you spend time comparing vendors. You can test your own figures with our specialty drug exposure calculator.
Employer-funded PBMs fall into five groups, and the group tells you what to ask.
The vendors are described as they describe themselves or as trade press reports them. We have not audited any of them. Each name opens its own page, and the full comparison table sits on PBM Options Compared.
The Three Largest
These run the biggest books of business and bundle specialty pharmacy and other services. The question is which affiliates are paid out of your claims.
Owned by a Carrier or Health System
Ownership shapes who decides the formulary and who sees your data. The question is how much of the pharmacy benefit you can negotiate apart from the medical plan.
Prime Therapeutics · CarelonRx · CenterWell Pharmacy · Kaiser Pharmacy · Scripius · HealthPartners
Built on Transparency or a Different Price Model
These name a pass-through or fixed-fee approach. The question is whether that language is in the contract, and how it is defined.
SmithRx · Capital Rx · Rightway · AffirmedRx · ScriptGuideRX · Navitus
Direct-Source PBMs
These pair PBM services with pharmacy or sourcing relationships. The question is which entity actually fills and prices the drug.
Independent and Platform Vendors
These say they are independent or sit behind other plans. The question is what independent means for ownership, pricing and data.
What an employer-funded PBM does to the plan.
The employer questions come down to price, data and who you can leave.
Insurance
It replaces your PBM, not your coverage. Employees keep the same plan and the same ID card. Because coverage stays in place, the switch is mainly an administrative change, though it still deserves testing and clear communication before the effective date. Plan communications should say so plainly.
Deductible Treatment
Claims adjudicated through the plan count the way your plan design says. That is the main difference from a coupon or a cash card. Ask your administrator to show a sample claim processed both ways, so you can see how amounts are applied before you decide.
Employee Experience
Employees use their plan ID as usual. Pharmacy networks and formularies can change at the switch, so plan communication matters. Run a sample of common prescriptions through the new setup ahead of time, and tell employees early which ones are affected and who to call.
Claims Data
Claim-level data is the main selling point. Confirm the file format, how often you receive it and whether you can audit it. Ask for a sample file before you sign, and have someone check that it can be read and reconciled to the invoices you receive.
Six questions to put to any PBM.
Put the same questions to every vendor, including your current one, and compare the answers in writing.
How Are You Paid?
Ask for every revenue source in writing: administrative fees, spread, rebate retention, manufacturer fees and any pharmacy ownership. A vendor that is comfortable with full disclosure will put the answer in the contract itself, not only in a sales document. Keep the written answer for your files.
Is There Spread?
Ask whether you are billed more for a drug than the pharmacy is paid, and how that is shown on the claim. Pricing models that pass the pharmacy payment through at cost make the answer easy to see, so ask for a sample claim.
What Can We Audit?
Ask for audit rights at the claim level, and who pays for an audit if it finds a problem. Also ask how long the audit window stays open, whether the vendor can limit which claims you review, and what records it will provide, so the right is practical.
What Is the Term and the Exit?
Ask about contract length, renewal terms and what happens to your data and transition support if you leave. Get the transition steps in writing, including timelines for returning your data, so leaving later does not leave a gap in pharmacy service. Ask about any fees for early exit.
Who Owns the Specialty Pharmacy?
Ask whether specialty drugs must go through an affiliated pharmacy, and how that pharmacy is paid. Specialty drugs are costly, so the answer can affect both your spend and how quickly employees get their medication. Ask what happens if an employee prefers another pharmacy.
Who Are Your References?
Ask for clients of your size and plan type, and how the vendor measures trend. Self-reported trend can mean different things. Speak with at least one reference directly, and ask what surprised them after the first year and what they would negotiate differently.
When an employer-funded PBM fits and when to skip it.
Our view, based on published terms. It is not a recommendation for any specific vendor.
It Fits When
You are self-funded, your pharmacy spend is big enough to model, and you want claim-level data and audit rights. A competitive bid against your current PBM is worth the effort. Before bidding, gather a full year of pharmacy claims so each bidder prices the same population.
Skip It When
You are fully insured and the carrier controls the PBM, or your pharmacy spend is small enough that a switch would cost more in disruption than it saves. If you are unsure which describes you, ask your adviser to estimate the likely savings and disruption before committing.
Where to go next.
Two PBM pages and two cash-price comparisons.
Questions about employer-funded PBMs.
Short answers for HR leaders and employers.
What does employer-funded mean here?
The employer contracts with the PBM directly, usually for a self-funded plan, instead of using the one a carrier selects.
Is ProCare Rx a discount card?
No. ProCare Rx describes itself as a PBM that administers pharmacy benefits for plans.
Can a fully insured group use one?
Usually the carrier chooses the PBM. Ask us how your carrier handles pharmacy benefits.
Is transparent the same as cheaper?
Not automatically. Transparency lets you see the price. You still have to compare net cost on your own claims.
How do we compare vendors?
Send the same claims file and drug list to each, and compare net cost, fees, rebates and guarantees side by side.
How long does a switch take?
It depends on your contract and plan year. Ask us to map the timing before you give notice to your current PBM.
Ready? Send us your renewal and we will review it with you.
The rules in one place.
ERISA For Employer Health Plans
Plan documents, fiduciary duties, claims and the litigation climate.
Transparency And Pharmacy Rules
Gag clauses, PBM contracts and disclosures, in one place.
Where the Rules Come From.
The laws and rules named on this page link to the statute or regulation they come from. This is general information, not legal or tax advice, and rules change, so check the current text.
ERISA (29 U.S.C. Chapter 18)
The federal law that sets reporting, disclosure and fiduciary rules for employer-sponsored benefit plans.
Send us your renewal.
We’ll tell you whether it looks competitive, where we see opportunity, and the five questions we’d put to your carrier. No cost, and no obligation to move anything.
The renewal letter
Your current plan summary
Contribution split by tier
Enrolled counts by tier
Four documents — two more if your group is 50 or more. Nothing else; every extra one is a reason to postpone.
An independent employee benefits consulting firm. We look at the entire benefits program — cost, plan performance, risk and administration.
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