Gut & Digestive Health
Root-cause care for persistent digestive symptoms that affect daily life.
IBS, IBD, acid reflux, SIBO, leaky gut, constipation, diarrhea, food intolerances, bloating, gas
Meet the experts leading your care
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.
Your integrated care team
Your care is delivered by a coordinated team working together to support you clinically and day to day.
Meet your care team
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“I’ve practiced medicine in many settings—from the Navy to private practice—and what keeps me excited about Parsley is the doctor-patient relationship. We get to walk alongside people who have taken the big step of committing to their health, and help them to make informed, personal health decisions as real people with real lives.”
Dr. Elizabeth Zapp, MD
Medical Director
Functional medicine care for complex and chronic conditions
Hormone Health
Support hormone health by understanding patterns across the whole body.
Fatigue, weight changes, PMS, acne, irregular cycles, hair loss, insulin resistances, PCOS
Autoimmune & Inflammation
Care that looks deeper when immune or inflammatory symptoms persist.
Crohn’s disease, Hashimoto’s, lupus, psoriasis, rheumatoid arthritis, ulcerative colitis, joint pain
Heart Health
Personalized cardiovascular care focused on prevention, performance, and long-term resilience.
High cholesterol, hypertension, family history of heart disease, elevated inflammation markers, cardiovascular risk assessment
Metabolic Health
Root-cause care for blood sugar, weight, and metabolic function beyond the scale.
Weight gain or resistance, insulin resistance, prediabetes, type 2 diabetes, metabolic syndrome, GLP-1 support, unexplained fatigue
Longevity & Healthspan
Proactive care designed to support long-term health, resilience, and aging well.
Blood sugar imbalance, disease prevention, heart health, memory changes, muscle loss, sleep issues
Perimenopause & Menopause
Care that supports you through hormonal transitions and midlife changes.
Hot flashes, low libido, memory issues, mood swings, night sweats, sleep disturbances, weight changes, vaginal dryness
Fertility, Pregnancy, & Postpartum
Whole-body care that supports reproductive health at every stage.
Anemia, gestational diabetes, irregular periods, PCOS, PMS, postpartum recovery
Mental & Emotional Health
An integrative approach to mental wellbeing that considers biology and lifestyle.
Agitation, anxiety, brain fog, changes in appetite or weight, difficulty concentrating, fatigue, feeling hopeless, insomnia, irritability, loss of interest in activities, low mood
Unexplained Symptoms
When symptoms don’t fit neatly into a diagnosis, we help connect the dots.
Allergic reactions, anxiety, bloating, brain fog, fatigue, headaches, insomnia, joint pain, low mood, skin rashes
Detox & Environmental Exposure
Clinical support for the body’s natural detox pathways and environmental stressors.
Mold exposure, chemical sensitivity, mercury and heavy metals poisoning, chronic fatigue, headaches
Functional medicine care for complex and chronic conditions
Gut & Digestive Health
Root-cause care for persistent digestive symptoms that affect daily life.
IBS, IBD, acid reflux, SIBO, leaky gut, constipation, diarrhea, food intolerances, bloating, gas
Hormone Health
Support hormone health by understanding patterns across the whole body.
Fatigue, weight changes, PMS, acne, irregular cycles, hair loss, insulin resistances, PCOS
Autoimmune & Inflammation
Care that looks deeper when immune or inflammatory symptoms persist.
Crohn’s disease, Hashimoto’s, lupus, psoriasis, rheumatoid arthritis, ulcerative colitis, joint pain
Heart Health
Personalized cardiovascular care focused on prevention, performance, and long-term resilience.
High cholesterol, hypertension, family history of heart disease, elevated inflammation markers, cardiovascular risk assessment
Metabolic Health
Root-cause care for blood sugar, weight, and metabolic function beyond the scale.
Weight gain or resistance, insulin resistance, prediabetes, type 2 diabetes, metabolic syndrome, GLP-1 support, unexplained fatigue
Longevity & Healthspan
Proactive care designed to support long-term health, resilience, and aging well.
Blood sugar imbalance, disease prevention, heart health, memory changes, muscle loss, sleep issues
Perimenopause & Menopause
Care that supports you through hormonal transitions and midlife changes.
Hot flashes, low libido, memory issues, mood swings, night sweats, sleep disturbances, weight changes, vaginal dryness
Fertility, Pregnancy, & Postpartum
Whole-body care that supports reproductive health at every stage.
Anemia, gestational diabetes, irregular periods, PCOS, PMS, postpartum recovery
Mental & Emotional Health
An integrative approach to mental wellbeing that considers biology and lifestyle.
Agitation, anxiety, brain fog, changes in appetite or weight, difficulty concentrating, fatigue, feeling hopeless, insomnia, irritability, loss of interest in activities, low mood
Unexplained Symptoms
When symptoms don’t fit neatly into a diagnosis, we help connect the dots.
Allergic reactions, anxiety, bloating, brain fog, fatigue, headaches, insomnia, joint pain, low mood, skin rashes
Detox & Environmental Exposure
Clinical support for the body’s natural detox pathways and environmental stressors.
Mold exposure, chemical sensitivity, mercury and heavy metals poisoning, chronic fatigue, headaches
A physician-led model that combines conventional and functional medicine
Parsley Health delivers functional medicine through a physician-led clinical model designed to be consistent, evidence-based, and deeply personalized. Our clinicians are board-certified and conventionally trained, with additional fellowship training in evidence-based functional medicine. Care is guided by shared clinical protocols and continuously refined through outcomes data, research, and physician oversight.
Nearby? Visit us in person.
We serve patients across the country. Our functional medicine providers deliver the same level of care and connection, whether online or in one of our centers.
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.
Frequently Asked Questions
Parsley clinicians are MDs, DOs, NPs, and PAs. They are board-certified and many have additional specialty credentials. Our care teams include physicians, nurse practitioners, and physician assistants who complete the same advanced functional medicine training and practice within a shared clinical system to ensure consistent, high-quality care.
