Your health plan's prescription coverage affects both your health and your wallet. Typically, prescription drug coverage is run through a Pharmacy Benefits Manager (PBM), a third party that negotiates drug prices with manufacturers and pharmacies, creates the list of covered drugs (formulary), and processes claims. Coverage details, including copays, coinsurance, and pharmacy networks, are defined by your specific plan design, whether it's an HMO, PPO, or a self-funded employer plan.
Most plans use a tiered formulary to set costs. Generic drugs (Tier 1) have the lowest out-of-pocket cost, followed by preferred brand-name drugs (Tier 2), non-preferred brand-name drugs (Tier 3), and specialty drugs (Tier 4), which are often the most expensive. The number of tiers varies by plan; some use fewer tiers, others add a separate preferred specialty tier. Your cost share may also depend on whether you use a preferred (in-network) pharmacy, a non-preferred (in-network) pharmacy, or an out-of-network pharmacy. Using a preferred pharmacy usually gives you the lowest cost through your plan.
The Role of Preferred Pharmacies and Networks
Most health plans have preferred pharmacies. PBMs negotiate discounted rates with specific pharmacy chains (e.g., CVS, Walgreens, or large grocery store chains) or mail-order services. In return for sending patients their way, these pharmacies agree to lower reimbursement rates for medications.
What does that mean for you?
- Lower Copays/Coinsurance: Filling a prescription at a preferred retail pharmacy costs less than at a non-preferred one within the network.
- Mail-Order Benefits: For maintenance medications (taken regularly for chronic conditions), plans often push you toward a preferred mail-order pharmacy, where a 90-day supply typically costs two copays instead of three.
- Accessibility: Plans must keep an adequate network so members have reasonable access to pharmacies. But always check your plan's provider directory or app to see which pharmacies are preferred for your plan.
When the Cash Price Beats Your Copay
A preferred pharmacy gives you the best price through your plan, but your plan's price is not always the best price available. For some medications, paying cash with a discount card costs less than the copay. GoodRx's analysis of the 100 most prescribed drugs found its discount prices beat the average insurance copay 37% of the time, with savings as high as 54% on some drugs. Pharmacists could once lose contracts for telling you this, because PBM agreements included gag clauses that barred them from disclosing when the cash price was cheaper. Congress ended that in 2018 with the Patient Right to Know Drug Prices Act, so a pharmacist can now tell you when paying out of pocket is the better deal.
Paying cash does not count toward your deductible or out-of-pocket maximum on most plans, and that is easy to overlook. Compare both prices before you fill. For cheap generics, a discount card often wins. For brand-name and specialty drugs, the plan's negotiated price wins. Ask the pharmacist to run both.
Common Challenges and the Emerging Health-to-Wealth Alternative
The traditional PBM model has faced a lot of criticism for opaque pricing practices, like spread pricing (where the PBM charges the plan more than it pays the pharmacy and keeps the difference) and rebate arrangements that don't always lower costs at the counter. This complexity can frustrate people, lead to underuse of medications, and waste healthcare money that benefits neither the employer nor the employee. Regulators have moved from criticism to enforcement. In September 2024, the Federal Trade Commission sued the three largest PBMs, Caremark Rx, Express Scripts, and OptumRx, alleging their insulin rebating practices inflated list prices and shifted costs to patients. In February 2026, the FTC settled with Express Scripts on changes expected to reduce patients' out-of-pocket insulin costs by up to $7 billion over 10 years.
New models are now emerging to tackle these problems directly. WellthCare™, the first Health-to-Wealth™ Benefit System, addresses this with a transparent pharmacy model that eliminates spread pricing, rewards employees for verified preventive actions with store dollars, and lets program savings fund automatic retirement contributions. For example, a Health-to-Wealth model like WellthCare rethinks this relationship by integrating the pharmacy directly into the benefits system. Instead of a traditional PBM with misaligned incentives, such a system can run its own transparent pharmacy (WellthCare Pharmacy™). The value proposition shifts:
- Transparent, Aligned Pricing: Replace spread pricing with a transparent pricing model, aiming for 20-40% drug savings.
- Integrated Care: Link pharmacy data with preventive health plans and medication adherence reminders to improve health outcomes.
- Value for Employees: Pass pharmacy savings back to employees as store dollars at the WellthCare Store™, and put program savings toward automatic retirement contributions. A cost center becomes a wealth-building tool.
Actionable Steps for Employees and HR Leaders
To get the most from your prescription coverage:
- Review Your Plan Documents: Find the Summary of Benefits and Coverage (SBC) and the formulary list to understand your drug tiers and cost-sharing.
- Find Your Preferred Pharmacies: Use your insurer's or PBM's online tool to locate preferred retail and mail-order options near you. Sticking to these can save hundreds per year.
- Ask About Cheaper Alternatives: For any new prescription, ask your doctor if a generic or a therapeutic alternative on a lower tier is available and effective.
- Compare the Cash Price: For generics, ask the pharmacist what the medication costs without insurance or with a discount card. If that price is lower than your copay, you can pay cash, though the payment may not count toward your deductible.
- For HR & Benefits Leaders: At renewal, demand more transparency from your PBM. Audit for spread pricing and rebate pass-through. Consider new approaches that align pharmacy incentives with member health and overall cost reduction. Treat the pharmacy benefit not as a standalone cost but as part of an overall health and financial wellness strategy.
Prescription coverage is evolving from an opaque cost management exercise into a strategic part of employee wellbeing. Understand how the current system works, and push for models that prioritize transparency and aligned incentives. Employers and employees can both get better health outcomes and greater financial security.
This article is for general information only and is not legal, tax, or medical advice. Employers should consult their own advisors.