As featured in
Dr. Spiro on how a new generation of men is rethinking what healthy looks like in midlife.
Read the story
Why Catalyst
One relationship covers what usually takes a primary care doctor, a lab, a telehealth app and a specialist. Your physician sees the full picture and keeps adjusting it.
Body composition
Lose fat, build muscle and fix the markers behind both.
Energy and mood
Sleep, stress and drive, treated as medicine.
Hormone balance
Hormone care for men and women, guided by your labs.
Primary and acute care
Virtual sick visits, prescriptions and referrals.
How we're different
Others give you a test, a prescription or a report. We give you a doctor.
✓ Yes ◐ Partial ✕ No Based on publicly available information as of October 2026.
What’s included
01
Labs drawn at home
A phlebotomist comes to your home or office to draw your labs, on your schedule. No lab waiting rooms.
02
Your doctor, directly
One physician who knows your history. Text or call when something comes up, and talk to the same person every time.
03
Diagnostics that matter
60+ biomarkers across hormones, metabolism and inflammation, chosen because they change decisions.
04
A protocol built for you
Treatment, prescriptions and lifestyle changes based on your labs, history and goals.
05
Quarterly retesting
We recheck your markers every quarter so shifts get caught early and your plan keeps improving.
06
Primary and acute care
Virtual sick visits, refills and referrals to trusted specialists, all handled by your Catalyst physician.
How it works
1
Free consultation
A short call to talk through your goals and see if Catalyst is the right fit.
2
Comprehensive intake
Meet 1:1 with your physician to review symptoms, history and what you want to change.
3
Labs at home
A phlebotomist comes to you for a 60+ biomarker panel. Results go straight to your doctor.
4
Your protocol, then ongoing optimization
A plan built on your data, including prescriptions if needed, with quarterly retesting and adjustments.
Membership
We don’t take insurance, so your care isn’t limited by what a plan will cover. Most members pay with HSA or FSA funds, and we provide itemized receipts.
Your membership includes
Quarterly lab panels drawn at home
Direct access to your physician
Personalized protocol and prescriptions
Primary and acute care
Care coordination and specialist referrals
Itemized receipts for HSA and FSA
Our team
The founding team of Catalyst Precision
Meet Dr. Westley Spiro
Lead doctor and co-founder
Dr. Westley Spiro is a Mt. Sinai board-certified emergency medicine physician with advanced training in Functional and Integrative Medicine through the Academy of Anti-Aging Medicine (A4M).
He blends a commitment to evidence-based care with a passion for medical education, empowering patients to actively understand and engage with their health.
Driven by measurable outcomes, Dr. Spiro focuses on what matters most: real symptom relief, proactive optimization, objective lab improvement, and sustainable, long-term vitality.
Meet Matt Renart
Member experience and co-founder
Matt Renart is your dedicated partner for all things outside the exam room.
He serves as your point of contact for personalized guidance, logistics, and accountability, helping you get the most from your Catalyst experience.
From onboarding through every milestone, Matt is here to simplify the process and ensure your journey feels supported, connected, and clear.
Testimonials
Real members. Real progress.
FAQs
Answering your questions
Got more questions? Ask us below.
Do you treat women?
Yes. Catalyst cares for men and women, with protocols built around your labs, life stage and goals.
Do you accept insurance?
We do not accept insurance. This lets us deliver holistic care without the limitations of insurance plans. Some lab tests and advanced diagnostics may be reimbursable, but this is not guaranteed.
Can I use HSA/FSA?
Yes. We provide itemized receipts upon request.
Where do I go for labs?
We offer home phlebotomy draws at your home, included in the cost of service.
What’s included in the membership?
Quarterly labs, personalized plans, clinician access, prescriptions, and care coordination.
Do you offer primary care?
Your Catalyst physician provides 360 care, including comprehensive primary and acute care. Members have access to a referral network for specialized care.