If your insurance card says “CVS Caremark” on it, you are one of more than 110 million Americans whose prescription drug benefits are managed by this company. So what is CVS Caremark, exactly? It is the pharmacy benefit management division of CVS Health — a massive healthcare conglomerate that also owns CVS Pharmacy stores and Aetna insurance. That combination of power means CVS Caremark influences which drugs you can afford, which pharmacies offer the best deal, and whether your medication needs extra approval before it is covered.
CVS Caremark’s Role as a PBM
CVS Caremark is a pharmacy benefit manager (PBM) — a company that acts as an intermediary between health insurance plans, pharmacies, and drug manufacturers. When your employer or insurer needs someone to manage the pharmacy side of your health benefits, they may hire CVS Caremark to do it.
The company negotiates rebates with drug manufacturers in exchange for formulary placement, builds the list of drugs your plan covers, contracts with pharmacies to create a network, processes claims when you fill prescriptions, and runs utilization management programs like prior authorization and step therapy. CVS Caremark is one of the “Big Three” PBMs alongside Express Scripts and OptumRx.
How CVS Caremark Affects Your Prescription Costs
Understanding what is CVS Caremark starts with understanding the formulary. Your formulary is the list of medications your plan covers, organized into cost tiers. CVS Caremark typically structures these as:
Tier 1: Preferred generics — lowest copay, usually $5 to $15 for a 30-day supply.
Tier 2: Non-preferred generics and preferred brand-name drugs — moderate copays, often $25 to $50.
Tier 3: Non-preferred brand-name drugs — higher copays, sometimes $75 or more.
Tier 4/Specialty: Specialty medications — may require coinsurance (a percentage of the drug’s cost) rather than a flat copay, potentially reaching hundreds of dollars per fill.
The tier your medication lands on depends largely on the rebates CVS Caremark negotiates with manufacturers. A drug with a high list price but a generous rebate may sit on a lower tier than a moderately priced drug with no rebate. This dynamic means your out-of-pocket cost does not always correlate with the actual price of the medication.
The CVS Health Vertical Integration
What makes CVS Caremark unusual among PBMs is the degree of vertical integration within CVS Health. The parent company owns:
CVS Pharmacy: Nearly 9,000 retail pharmacy locations nationwide. This is where many CVS Caremark members fill prescriptions, often at lower copays than non-CVS pharmacies.
Aetna: A major health insurer serving tens of millions of members. Aetna plans frequently use CVS Caremark as their PBM.
CVS Specialty: A specialty pharmacy handling high-cost medications for complex conditions.
MinuteClinic and HealthHUB: In-store clinics and health service centers that extend the company’s reach into primary care.
This structure allows CVS Health to manage a patient’s experience from insurance enrollment to diagnosis to prescription fulfillment — all within its own ecosystem. Proponents say this integration creates efficiencies. Critics worry it reduces competition and creates incentives to steer patients toward CVS-owned services. The FTC’s 2024 report on PBMs raised specific concerns about vertical integration limiting patient choice.
CVS Caremark Mail Order and Specialty Pharmacy
CVS Caremark operates a mail order pharmacy that delivers 90-day supplies of maintenance medications to your door. For chronic conditions requiring daily medication, mail order usually costs less than three separate retail fills. Standard shipping is free, and most orders arrive within 3 to 5 business days.
Specialty medications are handled through CVS Specialty. These are high-cost drugs — often biologics or gene therapies — used for conditions like cancer, rheumatoid arthritis, or multiple sclerosis. CVS Specialty provides clinical support, including nurses who help patients manage side effects and adherence. Many employer plans require specialty drugs to be filled through CVS Specialty rather than a retail pharmacy.
Prior Authorization and Step Therapy
CVS Caremark uses utilization management tools to control drug spending. The two most common are prior authorization and step therapy.
Prior authorization requires your doctor to get approval from CVS Caremark before the plan will cover a specific medication. This typically applies to expensive drugs, medications with safety concerns, or drugs where a cheaper therapeutic alternative exists. Your doctor submits clinical documentation explaining why the medication is necessary, and CVS Caremark responds with a coverage decision.
Step therapy requires you to try a less expensive medication first — and fail on it — before the plan will cover a more expensive option. For example, a plan might require you to try metformin for diabetes before covering a newer, costlier GLP-1 drug. If metformin does not work or causes intolerable side effects, your doctor documents that failure, and CVS Caremark may then authorize the alternative.
Common Complaints About CVS Caremark
Independent pharmacists frequently cite CVS Caremark as a source of frustration. Reimbursement rates — the amount the PBM pays the pharmacy for dispensing a drug — can be below the pharmacy’s acquisition cost. The National Community Pharmacists Association has documented numerous instances of below-cost reimbursements from major PBMs including CVS Caremark.
Patients sometimes report being steered toward CVS-owned pharmacies through plan designs that charge higher copays at competitors. A 2023 lawsuit by independent pharmacies alleged that CVS Caremark used preferential pricing to drive patients to CVS Pharmacy locations, though CVS Health disputed these claims.
Transparency remains a concern. Employers who hire CVS Caremark often have limited visibility into the rebates the PBM negotiates and retains. PBM reform legislation at both state and federal levels seeks to address these opacity issues.
Frequently Asked Questions
Is CVS Caremark the same as CVS Pharmacy?
No. CVS Caremark is the pharmacy benefit management company. CVS Pharmacy is the retail drugstore chain. Both are owned by CVS Health, but they serve different functions. CVS Caremark manages drug benefits and processes claims. CVS Pharmacy dispenses medications. You can use your CVS Caremark benefits at non-CVS pharmacies that are in the plan’s network.
How do I find out if my drug is covered by CVS Caremark?
Log into your account at Caremark.com and use the drug cost estimator tool. Enter the medication name to see your estimated copay, tier placement, and any coverage restrictions. You can also call the member services number on your prescription card for assistance.
Can I use GoodRx instead of CVS Caremark?
Yes. If the cash price using a discount card like GoodRx is lower than your CVS Caremark copay, you can pay cash instead. However, cash payments do not count toward your plan’s deductible or out-of-pocket maximum. Compare both prices before deciding.
What is CVS Caremark’s customer service number?
The main customer service number is 1-800-875-0867. It is available 24/7 for most plan types. You can also reach support through the Caremark website chat feature or the mobile app.
What to Do with This Information
Now that you understand what is CVS Caremark and how it works, put that knowledge to use. Check your formulary before each plan year to catch any changes that might affect your medications. Compare retail and mail order costs — the difference often justifies switching. If a medication is denied, work with your doctor to submit a thorough prior authorization with detailed clinical justification.
And remember: your PBM is just one part of a larger healthcare system. For context on how pharmacy benefit management connects to insurance design, drug pricing, and healthcare policy more broadly, explore our healthcare policy guide.