Get the doctor’s Letter of Medical Necessity that unlocks it — most members get back $300–$500 a year in pre-tax dollars on the gym they already pay for.
Compatible with major FSA & HSA administrators
Administrator names are shown for identification only. MedSlip is not affiliated with or endorsed by them, and reimbursement is determined by your plan.
A real, named physician

I review every MedSlip case personally and sign each letter under my own name, NPI, and state license. The quiz-and-PDF mills skip that real physician determination — which is exactly why plans reject them. If a letter isn’t clinically appropriate, I don’t issue it, and you don’t pay.
How it works
A short, 60-second set of health questions so the physician can see if you qualify. Free — you only pay if you do.
A board-certified MD, licensed in 30+ states, writes and signs your Letter of Medical Necessity. Not AI. Not a template.
We email your signed letter with a how-to-submit guide. Send it to your FSA/HSA and get paid back.
What members say
“I had no idea my gym could be covered. The quiz flagged that my BMI qualified, a real physician reviewed it, and I got my Letter of Medical Necessity the same day. After I submitted it to my HSA, a good chunk of what I'd already spent came back.”
“What sold me was that an actual board-certified physician reviewed my case — his NPI and license were right on the letter. I submitted it to my FSA with my itemized receipt and they reimbursed my membership.”
“My doctor had already told me to exercise for my blood pressure — I just didn't know I could use pre-tax dollars for it. The letter came back signed and my plan reimbursed it. Knocked off a star only because I had to dig up an old lab to confirm.”
Every reason you’d need one
If a doctor has flagged your weight (BMI 30+), a gym membership is a recognized treatment for obesity — and you qualify.
Exercise is first-line therapy for hypertension and high cholesterol. A diagnosis can make your gym FSA/HSA-eligible.
Regular activity is core treatment for blood-sugar conditions — and valid grounds for a Letter of Medical Necessity.
Strengthening and movement is the recommended first-line treatment for back pain and osteoarthritis.
Exercise is an evidence-based treatment for depression and anxiety — and a valid reason for your letter.
If a physician has recommended exercise for a diagnosed condition, you may be able to pay for your gym with pre-tax dollars.
FAQs
MedSlip is an online physician service that issues Letters of Medical Necessity (LMNs). A board-certified physician reviews your health profile and, when clinically appropriate, issues and signs an LMN that lets you use your FSA or HSA to pay for a gym membership.
Ready when you are
Reviewed and signed by a board-certified physician — delivered the same day.
Get my letter →