Get a Letter of Medical Necessity for your gym, sauna, Oura ring, orthotics & more

A board-certified physician issues the Letter of Medical Necessity that lets you put pre-tax HSA/FSA dollars toward the gym, sauna, wearables, orthotics and recovery you already use. 

Compatible with major FSA & HSA administrators
Optum Fidelity HealthEquity WEX Lively Bank of America Optum Fidelity HealthEquity WEX Lively Bank of America
EVERY CATEGORY YOUR LETTER CAN SUPPORT

What your letter covers

One physician-signed Letter of Medical Necessity may help make many wellness expenses HSA/FSA eligible when medically appropriate.

Gym membership

The monthly membership you already pay for — made pre-tax eligible.

Personal training

One-on-one sessions and coaching prescribed to manage your condition.

Treadmill & exercise equipment

Treadmills, bikes, and home gym gear for at-home cardio and strength.

Massage therapy

Therapeutic and deep-tissue work for chronic pain and tension.

Oura ring & wearables

Oura, Whoop, Apple Watch, and trackers that monitor real biometrics.

Ergonomic chair

Supportive seating prescribed for back pain and posture-related issues.

A real, named physician

Meet your physician

Dr. Adam Z. Kawalek, MD

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.

Experience
15+ years
clinical practice
Specialty
Internal Medicine
Medical school
Mount Sinai
Residency
Cedars-Sinai · NYU
How it works

Three simple steps

Our process is fast, secure, and built around you.

Member answering health questions on a laptop at home
01

Answer a few
quick questions

Complete a quick health questionnaire. The review helps determine whether you may qualify for a Letter of Medical Necessity.

A board-certified physician reviewing a case on a laptop
02

A physician
reviews & signs

A board-certified physician licensed in 29 states reviews your information and, when clinically appropriate, issues a signed Letter of Medical Necessity.

Member viewing their generated letter confirmation on a phone
03

Submit it & get
reimbursed

Receive your signed letter by email along with instructions for submitting reimbursement claims through your HSA or FSA administrator.

What members say

Real reviews from real people

★★★★★

“It was a quick turnaround for getting an LMN. My HSA purchase was reimbursed.”

Anna
Trustpilot, Oct 2026
★★★★★

“The Letter worked great. Submitted with my HSA and my Pilates Classes were covered.”

Brian
Trustpilot, Sep 2026
★★★★★

“Perfect. Got my letter within an hour.”

Eleanor
Trustpilot, Aug 2026

Read every review on Trustpilot

FAQs

Frequently asked questions

Everything you need to know about getting your letter. Can't find the answer you're looking for?

Contact our team →
What is MedSlip?

MedSlip is an online physician service that provides Letters of Medical Necessity (LMNs). A board-certified physician reviews your health profile and, when medically appropriate, issues a signed letter that may help you use HSA or FSA funds for eligible wellness expenses such as gym memberships, massage therapy, exercise equipment, ergonomic chairs, and wearables.

What is a Letter of Medical Necessity?

A Letter of Medical Necessity (LMN) is a physician-signed document explaining why a product or service is medically appropriate for treating or managing a health condition. Many HSA and FSA administrators require an LMN before reimbursing expenses that are not automatically eligible. Our complete LMN guide covers what plans require, administrator by administrator.

Can I use my HSA or FSA for a gym membership?

In some situations, yes. A gym membership may qualify for reimbursement when a physician determines it is medically appropriate and issues a Letter of Medical Necessity. Final reimbursement decisions are made by your HSA or FSA administrator.

Is Oura Ring HSA or FSA eligible?

Wearables such as Oura Ring, WHOOP, and certain smart devices may qualify when they are part of a physician-recommended treatment plan and supported by a Letter of Medical Necessity.

Does massage therapy qualify for HSA or FSA reimbursement?

Massage therapy may be eligible when prescribed to help manage chronic pain, musculoskeletal disorders, stress-related conditions, and other qualifying medical concerns.

Do I qualify?

Qualification depends on your health profile and physician review. Every case is individually evaluated, and not everyone will qualify for a Letter of Medical Necessity.

Who signs the letter?

A board-certified physician licensed in your state reviews and signs every MedSlip letter.

What happens if I don't qualify?

If a physician determines that a Letter of Medical Necessity isn't clinically appropriate, one won't be issued and you won't be charged.

How much can I save?

Because HSA and FSA dollars are pre-tax, many members save hundreds of dollars annually on eligible wellness expenses.

Ready when you are

Get your doctor's letter today

Receive a physician-reviewed Letter of Medical Necessity that may help you use HSA and FSA funds for gym memberships, fitness equipment, massage therapy, wearables, ergonomic chairs, and more.

Get my letter →