Parsley Health combines the best of conventional and functional medicine to deliver personalized care with shared standards, clinical rigor, and progress you can feel over time.
our approach
Evidence-based functional medicine, delivered with care.
When symptoms persist, answers matter
Too many people live with ongoing symptoms despite normal lab results and standard care. Visits are short. Specialists are siloed. Care often focuses on managing symptoms instead of understanding what’s driving them.
Parsley Health was built to change that experience, by giving clinicians the time, tools, and structure to practice deeper, more personalized medicine.
We believe better outcomes come from asking better questions and empowering expert clinicians to understand a patient's full picture of health.
Why Parsley clinicians are different
Board-certified clinicians, rigorously trained in functional medicine.
Board-certified clinicians
All Parsley clinicians are MDs, DOs, NPs, or PAs trained at top hospitals and universities in fields like internal medicine and family medicine.
Functional medicine fellowship
Each clinician completes Parsley’s intensive, evidence-based fellowship, plus advanced coursework through the Institute for Functional Medicine.
Conventional + functional care
We combine whole-body functional medicine with the ability to prescribe conventional medications when appropriate, no tradeoffs required.
Evidence-based clinical protocols
Parsley maintains the only complete, documented set of evidence-based functional medicine protocols, continuously reviewed and refined across the practice.
The Parsley clinical collective
Your care is supported by a national team of senior clinicians, shared case review, and AI-enabled tools that surface insights across the practice.
Outcomes tracking
We track progress across the entire practice so care improves not just for one patient, but for everyone we serve. Backed by peer-reviewed studies.
Consistent, standardized care protocols across 50K+ patients
Parsley clinicians practice from Encyclopedia Parsley, our internal clinical playbook for functional medicine. This ensures care is consistent, rigorous, and grounded in best practices, while still tailored to each individual.
- Evidence-based protocols spanning gut health, hormones, immune function, fertility, metabolism, and longevity
- Built and governed by senior, board-certified physicians
- Continuously updated as science and clinical insights evolve
- Embedded into our training, digital tools, and clinical workflows, with AI support to surface insights at the point of care
A physician-led vision for our care
Parsley Health was founded by Dr. Robin Berzin, MD, who trained at Columbia University and Mount Sinai and saw how fragmented care leaves too many people without real answers.
With Parsley, she built a physician-led medical system that treats the whole person—combining whole-body medicine with clinical rigor, standardized protocols, outcomes tracking, and technology-enabled care.
Today, Dr. Berzin continues to lead Parsley Health as CEO, advancing an innovative model of functional medicine that can reach and impact more people every day.
Three ways to start your functional medicine care
Each option offers expert guidance by our board-certified clinicians. The right place to start depends on what you already know and what you want help with next.
Start with labs
Get advanced lab testing to better understand your body and health. A Parsley clinician interprets your results and helps identify what matters most.
Pricing: Starting at $350. Self-pay only. HSA/FSA eligible.
Already have labs?
Upload labs from any functional labs provider and schedule a lab review with a Parsley clinician, plus guidance on what to do next.
Pricing: $250 for a one-time virtual visit. Self-pay only. HSA/FSA eligible.
Care membership
Partner with a clinician and dedicated care team who support your progress over time. Available in-person in NYC and Los Angeles, and nationwide via telehealth.
Pricing: Membership prices vary by insurance in-network status.
Progress you can see and feel
We use our proprietary, clinically-validated Parsley Symptom Index (PSI) to track progress in our care. Parsley members complete the PSI before their first visit and periodically over time. Clinicians use it to guide conversations, monitor progress, and understand how changes in care affect quality of life. Nearly 9 out of 10 members report symptom improvement within their first year of care.
member outcomes
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improved or eliminated symptoms in the first year
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improved mental wellbeing
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members served nationwide
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improved or eliminated symptoms in the first year
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improved mental wellbeing
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members served nationwide
member outcomes