If paying for prescriptions feels impossible, a patient assistance program can be the difference between starting treatment and going without. A patient assistance program is a program that helps people get prescription medicines at little or no cost when they cannot afford them. This guide breaks down how these programs work, who runs them, how to qualify, and how Medicare Part D fits in. It also shows where donation and redistribution solutions like SIRUM can fill the gaps.
A patient assistance program, often called a PAP, helps people get prescription medicines at little or no cost when they cannot afford them. Most focus on uninsured or underinsured patients and target expensive brand or specialty drugs. Support can be free product, copay or coinsurance help, or discount options. The common goal is to improve adherence by removing price barriers.
Quick facts to set the stage
Nearly 1 in 4 Americans report trouble affording prescriptions
An estimated 11 billion dollars in usable medicines go to waste each year
There are hundreds of programs, with more than 375 manufacturer funded PAPs counted in 2021
Collectively, PAPs have helped tens of millions of patients start or stay on therapy
Sponsors are the organizations that fund, design, and operate the program.
Pharmaceutical manufacturers, often through affiliated foundations, run the majority of PAPs and supply their own medicines at no cost or reduced cost
Independent charities provide disease based copay or premium support
State agencies operate State Pharmaceutical Assistance Programs, commonly called SPAPs, for specific resident groups or conditions
Typical flow
The patient or clinic identifies a program for a specific medication
An application is completed with income, insurance, and prescription details
The sponsor reviews and approves eligibility
Medications are shipped to the home, clinic, or pharmacy, or a coupon or copay card is issued
Programs often include case managers who help with prior authorization, claims, and refills
Many PAPs dispense a 30 or 90 day supply per fill. Some require reorders, others preauthorize several months.
Criteria vary by sponsor and drug, but commonly include
Financial need, usually measured against Federal Poverty Level thresholds such as 200, 300, or even 500 percent for very high cost therapies
Insurance status, often uninsured or underinsured for that drug
Residency, usually United States residence and sometimes citizenship or lawful status
Prescription and medical need, a valid prescription and sometimes diagnosis verification
Underinsured patients may qualify if coverage excludes the drug or the copay is extraordinarily high. Programs may ask for denial letters, pharmacy price printouts, or similar evidence.
Expect to submit
Application form from the program website or portal
Proof of income such as a tax return, W-2, pay stub, or unemployment letter
Insurance cards or a statement of no coverage
Prescription and provider signature, sometimes with diagnosis notes
Photo identification
Approvals can take a few days to a couple of weeks. Many programs require annual recertification. Legitimate PAPs do not charge enrollment fees. If someone asks for payment to apply, treat that as a red flag. If the paperwork feels heavy, ask your clinic or a nonprofit helpline to assist, or see SIRUM’s resources for individuals.
Two real world touchpoints help illustrate scale and impact.
Boehringer Ingelheim Cares reported helping more than 69,000 patients in 2011 with free medicines across several conditions
The Partnership for Prescription Assistance, later rebranded as the Medicine Assistance Tool, connected more than 8 million Americans to programs in its first decade
These snapshots show how a single company program can aid tens of thousands in a year, and how an umbrella referral platform can guide millions to help.
PAPs are vital, yet imperfect.
They can be a short term fix, not a cure for high list prices
Awareness is uneven and applications can be complex, which means eligible patients may not finish enrollment
Coverage is narrow, typically for select brands or specialty drugs, not every medicine a person uses
Patients just above income cutoffs may be excluded even if they still cannot afford their therapy
Legal scrutiny has uncovered missteps. In 2019 several companies paid more than 120 million dollars to resolve allegations related to Medicare copay support routed through charities. Two large charity programs paid a 6 million dollar settlement tied to donor influence concerns. These cases reinforced the need for strict independence and broad disease funds.
Try this sequence
Ask your prescriber or pharmacist about the drug maker’s program and paperwork
Search the manufacturer site for the drug name plus patient assistance program
Use national directories
Medicine Assistance Tool, the industry supported finder for manufacturer PAPs
NeedyMeds, a nonprofit database that tracks PAPs for about 4,700 medicines and in one recent year directed people to more than 28,000 programs by phone
RxAssist and condition specific groups like cancer or MS societies
If the specific drug has no program, these tools often list alternatives such as discount cards or disease based charities.
Friendly tip
If you need low cost generics for common chronic conditions and live in Georgia, Illinois, or Maryland, look at the nonprofit pharmacy model that SIRUM powers. You can start with the nonprofit home delivery pharmacy, then your provider can e prescribe to the service.
Manufacturers generally cannot pay a Medicare Part D member’s copay inside the Part D benefit because that can be treated as an illegal inducement. There is a compliant path though. Companies can help by supplying free medicine outside the insurance benefit. Independent charities, when truly independent and disease broad, can offer copay help to Medicare beneficiaries.
Operating outside the Part D benefit means the PAP provides the drug without billing the Part D plan. No claim is filed and the plan bears no cost. Practically, the company ships the medicine for free or supplies it through a program pharmacy. During that period the patient does not use Part D coverage for that drug.
TrOOP is the running total of what counts toward a Part D member’s out of pocket limit. Manufacturer-supplied free products do not count toward TrOOP because it is not a patient payment or a qualified third party payment. State programs like SPAPs can count. The upside is zero cost at the counter during PAP coverage. The tradeoff is slower progress toward catastrophic coverage because those free fills do not add to TrOOP.
To keep records straight, PAP sponsors can enter a Data Sharing Agreement with Medicare. Through this agreement, the sponsor and CMS exchange eligibility and assistance data so plans know when a beneficiary is getting a medicine outside the benefit. That keeps TrOOP calculations and plan outreach accurate and avoids duplicate payment.
When a PAP onboards to this data exchange, it must attest that it will operate separately from Part D benefits, will not pay copays inside the plan, and will not count its contributions toward TrOOP. This attestation holds the sponsor accountable for program design and communications.
CMS issues Coordination of Benefits and Recovery guidance that tells plans and PAPs how to treat these scenarios. The guidance makes clear that PAP supplied drugs are neither primary nor secondary coverage. They sit outside insurance. The files exchanged through the coordination system prevent double paying and keep member drug histories consistent.
The HHS Office of Inspector General has issued bulletins since 2005 that outline lawful and risky practices. Highlights
Direct manufacturer subsidies inside Part D carry high kickback risk
Free drug outside the benefit and donations to independent charities are acceptable when safeguards exist
Charity funds should be broad and neutral, not tailored to a single brand or narrow clinical slice
No donor may steer assistance or access patient level data that ties donations to its own sales
For patients, this oversight helps ensure programs truly center on need and choice.
Most large manufacturers operate multiple programs for their brands. Features you can expect
Income thresholds often between 250 and 400 percent of Federal Poverty Level, sometimes higher for lifesaving therapies
Focus on patients with no coverage for the requested drug or those facing denials
Direct shipment to homes, clinics, or provider offices
Annual recertification
As a group, manufacturer PAPs number in the hundreds. One industry tally counted more than 375 in 2021. Over time these programs have delivered billions of dollars in free medicines and helped many millions of people.
Independent charities support insured patients who still face high out of pocket costs. Many create disease based funds that pay copays or even monthly insurance premiums. Funds open and close based on donations, so timing matters. Income limits are often generous, sometimes up to 400 or 500 percent of FPL, because even middle income families can face unaffordable bills with specialty care.
Tip for Medicare members
Manufacturers cannot offer copay coupons for Part D drugs, so independent charities are often the compliant route to reduce cost sharing.
Use these resources to speed your search
Medicine Assistance Tool for manufacturer programs
NeedyMeds for PAP listings, application links, and diagnosis based help
RxAssist for program details and guidance
BenefitsCheckUp for seniors to find drug and premium help
Condition groups like cancer and MS societies for targeted funds
Many states operate SPAPs that help residents with premiums, copays, or coverage gaps. Examples include senior programs that wrap around Part D and AIDS Drug Assistance Programs in every state for HIV treatment. Payments by qualified SPAPs count toward TrOOP, which can help members reach catastrophic protection more quickly.
Local safety nets make a real difference.
Free and charitable clinics and pharmacies serve millions of visits each year and often coordinate PAP applications
Charitable pharmacies dispense free or very low cost medicines sourced from donations
Community health centers use 340B discounts and often provide on site dispensing at reduced prices
Drug repository and donation models, like SIRUM, capture unopened, unexpired medicines and redistribute them to clinics and nonprofit pharmacies
Real world redistribution impact
PharMerica reported donating 820,739 prescriptions in 2022 and 719,287 prescriptions in 2023 through a donation partnership. Those donations were valued near 25 million dollars in 2023 and reached underserved patients.
PAPs are powerful when they exist for your drug and you qualify. When they do not, or while you wait, medication donation and redistribution can bridge access.
SIRUM, a national nonprofit, helps manufacturers, pharmacies, and individuals donate sealed and unexpired medicines to safety net clinics and charitable pharmacies, then powers a low-cost home delivery pharmacy for patients in select states.
Clinics and nonprofit pharmacies can get a steady supply of donated generics and OTCs to lower patient costs
Patients in Georgia, Illinois, and Maryland can receive hundreds of common medicines through a simple mail service with very low administrative fees and free shipping
Explore how donation and low cost delivery can complement a patient assistance program. For patients navigating cancer treatment during insurance delays or high deductibles, see our oncology donation initiative.
Donate or partner, start here: Donate medicine
Patients and providers, see affordable delivery options powered by SIRUM: Find help with SIRUM
A patient assistance program offers free or very low cost prescription access to people who cannot afford a needed medicine. Most focus on uninsured or underinsured patients and on expensive brand or specialty drugs.
There are hundreds across the United States. One industry count identified more than 375 manufacturer funded programs in 2021, plus many independent charities and state programs.
Reviews can be as quick as a few days, or up to a couple of weeks. Submitting complete income, insurance, and prescription documentation helps avoid delays.
Usually not inside the Part D plan. Manufacturers can legally help by providing free medicine outside the benefit. Independent charities can sometimes assist with copays if they meet OIG safeguards.
Manufacturer supplied free product does not count toward True Out of Pocket totals. SPAP payments can count. This means free fills help now but do not move you faster to catastrophic coverage.
Ask your clinician to check alternatives, look for disease-based charities, and explore community resources. Donation and redistribution can help with many generics. Start with SIRUM’s programs.
Legitimate programs do not charge enrollment or processing fees. If someone asks for money to help you apply, contact your clinic or a trusted nonprofit for guidance.
Yes. Many safety net clinics combine manufacturer PAPs for specific brands with donated generics and OTCs from SIRUM to stretch budgets and keep patients on therapy. Learn more at SIRUM.
If you need help now, talk to your care team, search the manufacturer site, and check national directories. If you are a donor or clinic, or a patient in Georgia, Illinois, or Maryland seeking affordable delivery, see how SIRUM can support you alongside any patient assistance program.
