Caremark is not a Medicare plan — it's a pharmacy benefit manager that works with Medicare plans

Caremark is a company that handles prescription drug coverage for many insurance plans, including some Medicare plans. It is not itself a Medicare plan you can join. If you see Caremark's name on your insurance card or in your plan documents, it means your Medicare plan has hired Caremark to manage which drugs are covered and how much you pay for them.

Think of it this way: Medicare Advantage plans and Medicare Part D plans choose which company will run their pharmacy benefits. Caremark is one of the largest companies doing this work. When you fill a prescription, you're using Caremark's network and following Caremark's rules about coverage — but you're still enrolled in your actual Medicare plan, not in Caremark itself.

Key Takeaways

  • Caremark is a pharmacy benefit manager, not a Medicare plan you can join directly.
  • Your Medicare Advantage or Part D plan may use Caremark to manage your prescription drug coverage.
  • If Caremark handles your prescriptions, you follow their formulary (list of covered drugs) and their pharmacy network.
  • You can find out whether Caremark manages your drugs by checking your Medicare plan's official documents or calling your plan's customer service number.

How Caremark fits into your Medicare coverage

Medicare Advantage plans and standalone Medicare Part D plans must choose a company to manage their prescription drug benefits. Caremark, CVS Caremark, Express Scripts, and a few others are the main pharmacy benefit managers in the country. Your plan's choice affects which pharmacies you can use and which drugs are covered at what price.

When you enroll in a Medicare plan that uses Caremark, you don't sign a separate agreement with Caremark. Your Medicare plan contract includes Caremark's involvement. You pay your plan's premiums and follow your plan's rules — which include Caremark's formulary and network requirements.

Where you'll see Caremark's name

Caremark appears in several places if your plan uses them. Your Medicare plan's official documents will list Caremark as the pharmacy benefit manager. Your insurance card may have Caremark's name or logo. When you call your plan's customer service line with a prescription question, you may be transferred to a Caremark representative.

You might also see Caremark's name if you use their mail-order pharmacy service or if you check your plan's drug formulary online. Many plans post their drug lists on Caremark's website or link to it from their own site.

What Caremark controls about your prescriptions

Caremark manages three main things: the formulary (which drugs are covered), the pharmacy network (which pharmacies you can use), and the cost-sharing rules (how much you pay). Your Medicare plan sets the overall structure, but Caremark carries out these decisions day to day.

If your doctor prescribes a drug that isn't on Caremark's formulary, you have options. You can ask your doctor to prescribe a different drug that is covered, request that Caremark make an exception (called a formulary exception), or pay out of pocket. Your plan's customer service team can tell you which route makes sense for your situation.

Finding out if Caremark manages your prescriptions

The easiest way is to look at your Medicare plan's official documents. Your plan's Summary of Benefits and Coverage or Evidence of Coverage will name the pharmacy benefit manager. You can also call your plan's customer service number — the number is on your insurance card — and ask directly.

If you're shopping for a Medicare plan and want to know which pharmacy benefit manager each plan uses, you can check the plan details on Medicare.gov. Search for plans in your area, and the plan information will show which company manages prescriptions.

What to do if you have a prescription problem with Caremark

Start by contacting your Medicare plan's customer service line. They can often resolve issues faster than calling Caremark directly, because they know your specific plan's rules. If your plan directs you to Caremark, have your insurance card and prescription information ready.

Common issues include a drug not being covered, a pharmacy not being in the network, or a prior authorization requirement (when Caremark requires your doctor to get approval before filling the prescription). Your plan's customer service team can explain why the issue happened and what your options are.

Frequently Asked Questions

Can I switch away from Caremark if I don't like them?

You can't switch Caremark directly, but you can switch Medicare plans during the Annual Enrollment Period (October 15 to December 7 each year). If you choose a different plan, that plan may use a different pharmacy benefit manager. You can compare which company manages prescriptions for each plan before you enroll.

Does Caremark work with all pharmacies?

No. Caremark maintains a network of pharmacies, and you typically pay less when you use an in-network pharmacy. Out-of-network pharmacies may charge more or not fill prescriptions at all. Your plan documents list which pharmacies are in Caremark's network, or you can search on Caremark's website.

What's a formulary exception and how do I request one?

A formulary exception is a request to cover a drug that isn't on Caremark's list. Your doctor can submit the request, usually by phone or fax. Caremark reviews it and decides within 72 hours (or 24 hours if it's urgent). Your plan's customer service team can tell you how to start the process.

Is Caremark the same as CVS Caremark?

Caremark and CVS Caremark are related but not identical. CVS Caremark is the pharmacy benefit manager owned by CVS Health. Some plans use "Caremark" and some use "CVS Caremark" — check your plan documents to see which one manages your prescriptions. Both work the same way from your perspective.