What Is Mark Cuban’s COST PLUS DRUGS, and Why Doesn’t It Take Medicare or Any Insurance?

What Is Cost Plus Drugs?

Direct answer: Cost Plus Drugs (officially the Mark Cuban Cost Plus Drug Company) is an online, cash-pay pharmacy that sells generic medications at the actual manufacturer or acquisition cost, plus a fixed, published markup and a flat dispensing fee — with the full price breakdown shown for every drug. It does not accept or bill Medicare, neither standalone Part D plans nor Medicare Advantage drug coverage. For Medicare beneficiaries, it can still be a genuinely useful tool for certain generics — you just pay directly rather than through your drug plan, and it’s worth understanding exactly how that trade-off works before relying on it.

Who Started Cost Plus Drugs, and Why?

The company was co-founded by entrepreneur Mark Cuban and physician Alex Oshmyansky, built on a straightforward premise: cut out the layers of intermediaries — wholesalers, pharmacy benefit managers, and rebate arrangements — that inflate what patients ultimately pay for generic drugs, especially the ones that are genuinely inexpensive to manufacture.

How Does the Pricing Model Actually Work?

The formula is deliberately simple, and published openly for every medication:

• The actual manufacturer or acquisition cost of the drug
• A fixed markup around 15%
• A modest flat pharmacy dispensing fee
• A separate, low flat shipping fee

No hidden rebates, no pharmacy benefit manager spread pricing, no formulary games — you see the acquisition cost, the markup, the fees, and the total, all in one place before you order.

The company began as a direct-to-consumer mail-order pharmacy focused on generics, and has since expanded into its own sterile manufacturing facility and a wholesale marketplace supplying hospitals and clinics. It now offers a broad and growing catalog of medications, well beyond its original generic-only focus.

A striking real-world example: a common generic leukemia medication, priced at a small multiple of its raw manufacturing cost plus the flat fees, has been available through Cost Plus Drugs at a small fraction of typical retail pricing for the same drug — pricing that can otherwise run into the thousands for a single month’s supply. Many patients report paying less through Cost Plus than their Part D copay would have been at a traditional pharmacy for the exact same generic.

Why Doesn’t Cost Plus Drugs Accept Medicare or Insurance?

This is the core of the question, and the answer comes down to what the whole model is built to avoid. Cost Plus Drugs was designed as a cash-pay pharmacy from the start — insurance isn’t required, and for most customers, the transparent cash price is the entire point.

It does accept a limited number of private insurance plans and employer-sponsored arrangements through select partnerships. But it doesn’t accept or bill Medicare in any form — not standalone Part D plans, not Medicare Advantage drug coverage.

A few reasons why:

• Accepting insurance would reintroduce the opacity the model was built to eliminate. Medicare reimbursement involves formularies, prior authorizations, and PBM adjudication — plugging into that system means pricing stops being pure cost-plus and starts reflecting negotiated rates and administrative overhead again.
• Government payment rules don’t fit a radically simple, published price list. Medicare has specific reimbursement structures and reporting requirements that would require restructuring the company’s core competitive advantage: a transparent, unchanging formula anyone can see.
• It keeps prices low and predictable. When patients pay cash directly, there’s no gap between a “list price” and a “net price” — what you see is genuinely what you pay, aside from shipping.

In short, accepting Medicare would mean playing by the rules of the very system Cost Plus Drugs was built to disrupt.

Can Medicare Beneficiaries Still Use Cost Plus Drugs?

Yes — and many already do, since for certain generics it can mean real savings. You pay out of pocket: your doctor sends a prescription to Cost Plus Drugs’ pharmacy partner, you order online, and the medication ships to you.

A few important caveats specific to Medicare beneficiaries:

• Money spent at Cost Plus Drugs doesn’t count toward your Part D deductible or annual out-of-pocket cap. Only claims actually billed through your Part D plan count toward those totals.
• You must maintain creditable prescription drug coverage — Part D or an equivalent — to avoid a permanent late enrollment penalty. Dropping Part D entirely to rely solely on Cost Plus Drugs is almost never a good idea, even if a handful of your medications are cheaper there.
• Cost Plus Drugs focuses heavily on generics. Many expensive brand-name medications simply aren’t available through the platform.
• Compare total costs carefully, including shipping, against your specific plan’s copay, coinsurance, and whether the drug requires prior authorization or sits on a preferred tier.

A practical approach many Medicare beneficiaries use: fill expensive brand-name or specialty drugs through Part D — which helps you progress toward your deductible and annual cap — and use Cost Plus Drugs specifically for inexpensive generics where the cash price is clearly, verifiably lower.

What Does Cost Plus Drugs Reveal About Drug Pricing Generally?

Cost Plus Drugs is more than a discount pharmacy — it’s a working demonstration that the existing system often charges far more than the underlying cost would suggest. Independent analyses have estimated that if Medicare or large health systems purchased generics at similarly transparent, cost-plus pricing, potential savings could reach substantial sums annually. Hospitals and health systems are already partnering with the company’s wholesale marketplace for exactly this reason.

It also highlights a quiet irony many Medicare beneficiaries eventually discover: sometimes the “insured” price, after a pharmacy benefit manager and plan take their share, is actually higher than the transparent cash price from a company built specifically to bypass that system.

How Do I Decide If Cost Plus Drugs Is Worth Using?

1. Search your specific medications on the company’s website and review the full, published price breakdown.
2. Compare that total, including shipping, to what you currently pay under your Part D or Medicare Advantage drug coverage for the same medication.
3. Talk to your doctor or pharmacist about any clear-cut savings opportunities before switching how a specific prescription is filled.
4. Keep your Part D coverage active regardless of how many medications you shift over — this isn’t a replacement for creditable drug coverage.
5. Factor in convenience — mail-order shipping times and whether the specific strength and quantity you need is actually in stock.

Bottom Line

Cost Plus Drugs won’t replace Medicare drug coverage, and it isn’t trying to. What it offers is a rare, genuinely transparent window into what medications actually cost to produce — and for many generics, a real path to lower spending that runs entirely outside the traditional insurance system. For Medicare beneficiaries willing to compare prices medication by medication, that can translate into meaningful savings without giving up the coverage protections Part D provides for everything else.

Key Takeaways

• Cost Plus Drugs sells generic medications at manufacturer cost plus a fixed, published markup and flat dispensing and shipping fees, with full price transparency for every drug.
• It’s a cash-pay pharmacy that doesn’t accept or bill Medicare in any form — neither standalone Part D nor Medicare Advantage drug coverage.
• Spending at Cost Plus Drugs doesn’t count toward your Part D deductible or annual out-of-pocket cap — only claims billed through your actual Part D plan count.
• You should keep creditable Part D coverage active regardless of how much you use Cost Plus Drugs, to avoid a permanent late enrollment penalty.
• The platform focuses heavily on generics; many brand-name and specialty medications aren’t available there.
• A common practical strategy: fill expensive brand-name drugs through Part D toward your deductible and cap, and use Cost Plus Drugs for cheaper generics where the cash price clearly wins.

FAQ

What is Cost Plus Drugs?
An online, cash-pay pharmacy founded by Mark Cuban and Alex Oshmyansky that sells generic medications at manufacturer cost plus a fixed, transparent markup and flat fees.

Does Cost Plus Drugs accept Medicare?
No. It doesn’t accept or bill Medicare in any form — not standalone Part D plans, not Medicare Advantage drug coverage. It’s cash-pay only, with limited acceptance of select private insurance arrangements.

Why doesn’t Cost Plus Drugs take insurance?
Accepting insurance, especially Medicare’s reimbursement and formulary system, would reintroduce the pricing opacity and administrative complexity the company was specifically built to eliminate.

Does money spent at Cost Plus Drugs count toward my Part D deductible?
No. Only claims actually billed through your Part D plan count toward your deductible or annual out-of-pocket cap.

Should I drop my Part D plan and just use Cost Plus Drugs?
No. Dropping creditable drug coverage risks a permanent late enrollment penalty, and Cost Plus Drugs doesn’t carry many brand-name or specialty medications you might eventually need.

How do I know if Cost Plus Drugs would actually save me money?
Search your specific medications on their website, compare the total price including shipping to your current Part D copay or coinsurance for the same drug, and talk to your pharmacist before switching.