Parsley Health delivers evidence-based, whole-body functional medicine care, designed to understand why symptoms happen and support better health over time.
Healthcare that looks deeper
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.
"We can't wait for the wheels to fall off the wagon to see a doctor. We know that the body can heal. Now's the time to listen to the messages your body is sending you, and to ask for help."
Dr. Robin Berzin, MD
Founder & CEO
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.
Whole body care for every stage of your life
Parsley Health delivers evidence-based, whole-body medical care led by board-certified clinicians, with multiple ways to begin and a system designed to support long-term health. Care is delivered virtually nationwide, with in-person care available in New York City and Los Angeles.
We offer:
Comprehensive medical care for people who need ongoing support
Advanced lab testing and clinician review
Deep diagnostics to uncover patterns across hormones, metabolism, gut health, inflammation, and more
A standardized clinical methodology shared across the practice
Progress tracking over time to guide decisions and adjust care
Changing what medicine can do
Our Mission
To transform the health of everyone, everywhere through the world's best possible medicine.
Our Vision
Better physical, mental and spiritual health unlocks an individual’s potential for greatness and results in a safer, happier, more abundant and conscious world.
Our Values
- Treat the root cause
- Commit to excellence
- Count every good thing
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 consistently over time establish a baseline of symptom severity and track clinical progress. 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