Dr. Katherine Nori Janosz, MD
Medical Director
A Virtual Functional Medicine Practice
Functional Medicine That Starts With the Root Cause
Root Cause connects you with licensed clinicians who issue a Letter of Medical Necessity, making personalized functional medicine HSA/FSA eligible for qualified patients.
How review worksWho We Work With
A practice supported by partners
We work with technology and administrative partners, including Truemed, so that qualified medical expenses can be reimbursed through HSA and FSA accounts.
"We partner with Root Cause Functional Medicine to help people access eligible care through their HSA and FSA accounts."
Truemed
Our Clinicians
Meet the clinicians behind the review
Every letter of medical necessity is read and signed by a licensed clinician. Real names, real faces, real accountability.
Why Root Cause
Context shapes the review
Root Cause is a root cause medicine practice built on the idea that medicine is not one size fits all. Clinicians thoroughly assess health information including medical history and relevant clinical context to provide individualized recommendations for interventions.
Condition-based
Health assessment starts from a diagnosed condition and its medical context.
Risk to a diagnosed condition
Addresses a documented risk a clinician ties to a diagnosed condition, including increased risk for developing a related medical condition
More than a transaction
The assessment considers why an intervention may be clinically relevant.
Conditions We Review
Care anchored to a diagnosed condition or risk
Our Practice
What guides our practice
Root Cause is an independent functional medicine practice. Our clinicians understand how patients can use clinically appropriate functional interventions to treat their diagnosed conditions at the root cause.
01Clinician-led
Independent clinical judgment
Every review and decision rests with a licensed clinician, based on your health assessment.
02Evidence-based
Grounded in evidence
Recommendations are tied to a diagnosed condition and supported by published clinical evidence.
03Functional medicine
Looking beneath the surface
Rooted in functional medicine, we work to understand what drives a condition and address the risk factors a clinician identifies.
What is an LMN?
A short document for medical-necessity review
RCM clinicians are trained to provide letters of medical necessity when indicated. A Letter of Medical Necessity is documentation from a licensed clinician that a product or service is medically recommended to cure, treat, mitigate, or prevent a diagnosed condition, which can make it eligible for HSA/FSA use.
Issued by a licensed clinician
Tied to a specific condition
Supports HSA/FSA documentation
How It Works
1
Complete intake2
Clinician reviews3
Decision made4
LMN documentedClinical Review with Clear Safeguards
Built on clear clinical safeguards
Clinician-led review, not automation
A licensed clinician reviews what you submit and may issue an LMN when appropriate.
Tied to a specific condition
LMN reviews are based on documented health context, diagnosed conditions, and clinical judgment.
Validation behind the framework
Truemed's eligibility framework has been independently validated by the Validation Institute.
Privacy and security support
Root Cause handles personal health information under applicable state privacy laws; Truemed is SOC 2 compliant.