MedImpact is not an insurance provider. It is a pharmacy benefit manager, or PBM, which means it administers the prescription drug portion of a health plan that someone else — an employer, a commercial insurer, or a government program like Medicare or Medicaid — actually provides. If you are asking what kind of insurance provider MedImpact is because its name appeared on a pharmacy ID card, a prescription receipt, or a denial letter, the short answer is that your real insurance comes from a different company, and MedImpact is the organization working behind the scenes to decide which drugs that plan covers, what you pay at the counter, and where you can fill prescriptions.
Pharmacy Benefit Manager, Not Insurer
A PBM sits between your health insurer, your pharmacy, and the companies that manufacture drugs. It doesn’t sell policies, collect premiums, or pay medical claims for doctor visits and hospital stays. What it does is manage the prescription benefit on behalf of whoever does sell you coverage.
MedImpact is the largest privately held PBM in the country.1AMCP.org. MedImpact Healthcare Systems, Inc. It was founded in 1989 and is headquartered in San Diego. It doesn’t own pharmacies and doesn’t employ your doctor. Its contracts are with the organizations that sponsor health coverage, not with individual members. That is why you cannot buy a MedImpact plan: there isn’t one to buy.
The three things MedImpact actually controls are the formulary (the list of drugs your plan agrees to cover), the pricing it negotiates with manufacturers and pharmacies, and the rules about when and how drugs get dispensed.
Who Really Insures You If MedImpact Is on Your Card
MedImpact contracts with private employers who self-fund their health plans, with commercial insurance carriers, and with government programs including Medicare and Medicaid.1AMCP.org. MedImpact Healthcare Systems, Inc. Any of those entities might print MedImpact’s name on the pharmacy card they issue you, because MedImpact is the one processing prescription claims. The medical side of your coverage — the part that pays for office visits, surgery, labs, and emergency care — comes from the sponsor itself.
To find out who actually insures you, look at your medical ID card rather than your pharmacy card, or check your enrollment paperwork from your employer or exchange. The health plan name there is the insurer. MedImpact is the vendor that plan hired to run its drug benefit.
What MedImpact Decides About Your Prescriptions
The Formulary and Drug Tiers
Every plan that uses MedImpact has a formulary. MedImpact builds and maintains it by evaluating each drug’s safety, clinical effectiveness, and cost through a pharmacy and therapeutics committee made up of medical professionals.2MedImpact. Criteria for Developing Utilization Strategies
Formularies are organized into tiers, and the tier a drug lands in determines what you pay. A typical three-tier setup charges a low copay for generics, a moderate copay for preferred brand-name drugs, and a higher copay or percentage coinsurance for non-preferred brands. Some plans add a fourth tier for specialty medications, which can run into the thousands of dollars per fill. A drug that isn’t on the formulary at all generally isn’t covered, and you pay full retail unless your doctor requests an exception.
Pharmacy Networks
MedImpact also maintains pharmacy networks, similar to the way health insurers maintain networks of doctors and hospitals. Filling at an in-network pharmacy means your plan’s negotiated pricing and copay apply. Filling out of network can mean paying substantially more or getting no coverage at all. Some plans add a preferred tier within the network, where a smaller group of pharmacies offer deeper discounts. MedImpact’s member portal has a pharmacy locator for finding participating stores.3MedImpact. Home Delivery
For maintenance medications, MedImpact runs a mail-order program through partner fulfillment pharmacies rather than one it owns. A 90-day mail-order fill typically costs less per dose than a 30-day retail fill, and standard shipping is free.3MedImpact. Home Delivery
Rules That Can Stop a Prescription at the Counter
Not every drug on the formulary is available without conditions. MedImpact administers utilization management programs that are the most common reason a prescription gets flagged or denied.2MedImpact. Criteria for Developing Utilization Strategies Three show up most often.
Prior authorization requires your doctor to get approval from MedImpact before the pharmacy can dispense the drug. Your doctor submits clinical documentation showing the medication is medically necessary, and MedImpact evaluates it against the plan’s criteria.4MedImpact Healthcare Systems, Inc. Frequently Asked Questions Step therapy requires you to try a less expensive medication first; if it doesn’t work or causes side effects, your doctor can document that and request an override. Quantity limits cap the number of pills or doses in a given period, often for medications with abuse potential or high cost.
A denial under any of these rules isn’t the end of the road. Your doctor can submit a prior authorization or exception form to MedImpact by fax or through electronic portals like CoverMyMeds or Surescripts.5MedImpact. Prior Authorization Documents
How Claims Get Processed
When you hand your prescription to a pharmacist, MedImpact processes the claim electronically in real time. You don’t file paperwork or wait for reimbursement. The system verifies that you’re covered, checks whether the drug is on your formulary, applies any utilization rules, and calculates your copay or coinsurance on the spot.
What you actually owe depends on your plan’s cost-sharing: flat copays that vary by tier, coinsurance set as a percentage of the drug’s cost, and in some plans a deductible you must meet before prescription coverage begins. MedImpact applies all of these at the point of sale.4MedImpact Healthcare Systems, Inc. Frequently Asked Questions
When to Call MedImpact and When to Call Your Insurer
The distinction between a PBM and an insurer matters most when something goes wrong. Call your health insurer about a denied doctor visit, a hospital bill, a referral problem, or anything involving medical care. Call MedImpact about a denied prescription, a copay that looks wrong, a drug that isn’t covered, or a pharmacy that says your card won’t go through. The customer service number is printed on your pharmacy ID card.
MedImpact’s online portal and mobile app let you look up drug pricing, check formulary status, find participating pharmacies, and track refills. Many plans add medication adherence reminders when a refill is due.
Appealing a Coverage Denial
When MedImpact denies coverage, you have the right to challenge the decision. The denial notice should explain the reason and outline your appeal options. Most plans allow an internal appeal within 180 days of the denial, though your plan documents control the exact deadline.
Your doctor is the most important part of a strong appeal. Clinical documentation should explain why the denied medication is necessary, what alternatives have been tried and failed, and any relevant medical history. MedImpact reviews that against the plan’s clinical guidelines and issues a decision.
If the internal appeal is denied and the decision involves medical judgment, federal law gives you the right to an external review by an independent organization with no financial ties to MedImpact or your health plan. You generally have four months after the internal denial to request it. The independent reviewer examines your case from scratch, without deferring to MedImpact’s earlier decision, and must issue a ruling within 45 days. If the reviewer sides with you, your plan must provide coverage immediately. External review costs nothing in filing fees.6eCFR. 45 CFR 147.136 – Internal Claims and Appeals and External Review Processes