Functional Medicine
Root-cause investigation and personalized treatment plans for complex, chronic health conditions
Functional Medicine is the specialty focused on root-cause investigation and personalized treatment plans for complex, chronic health conditions. OpenDoc keeps the common visit types visible so patients can compare the care path before they book. Transparent pricing on this page currently ranges from $150 to $1,000 across 12 common visit types. Functional medicine practitioners use systems-based, root-cause analysis to identify and address the underlying drivers of chronic disease rather than merely treating symptoms. By integrating advanced laboratory testing, nutrition science, and personalized treatment protocols, functional medicine offers a comprehensive approach for patients with complex conditions that conventional medicine has failed to resolve. OpenDoc provides transparent cash pricing on functional medicine services starting at $150 — a specialty that insurance almost never covers, making upfront pricing essential.
Common services and transparent pricing
Pricing estimates are modeled from the current OpenDoc specialty taxonomy, visit archetypes, and transparent cash-pay assumptions. Posted provider pricing should be treated as the source of truth whenever it is available. Pricing last reviewed April 8, 2026.
- Comprehensive Initial Evaluation — $400–$800: Comprehensive Initial Evaluation is a common functional medicine entry point on OpenDoc with transparent pricing before booking.
- Advanced Comprehensive Lab Panel — $300–$1000: Advanced Comprehensive Lab Panel is a diagnostic functional medicine service used to clarify the condition before treatment decisions are made.
- Gut Health Panel (stool analysis) — $250–$500: Gut Health Panel (stool analysis) is a diagnostic functional medicine service used to clarify the condition before treatment decisions are made.
- Food Sensitivity / Elimination Diet Consultation — $150–$300: Food Sensitivity / Elimination Diet Consultation is a common functional medicine entry point on OpenDoc with transparent pricing before booking.
- Nutrition Consultation & Meal Planning — $150–$300: Nutrition Consultation & Meal Planning is a common functional medicine entry point on OpenDoc with transparent pricing before booking.
- Hormone Optimization Consultation — $250–$450: Hormone Optimization Consultation is a common functional medicine entry point on OpenDoc with transparent pricing before booking.
- Adrenal Function Testing (cortisol mapping) — $200–$400: Adrenal Function Testing (cortisol mapping) is a diagnostic functional medicine service used to clarify the condition before treatment decisions are made.
- Detoxification Program Consultation — $200–$400: Detoxification Program Consultation is a common functional medicine entry point on OpenDoc with transparent pricing before booking.
- Micronutrient Panel (vitamins and minerals) — $200–$450: Micronutrient Panel (vitamins and minerals) is a diagnostic functional medicine service used to clarify the condition before treatment decisions are made.
- IV Nutrient Therapy Session — $150–$350: IV Nutrient Therapy Session is a common functional medicine entry point on OpenDoc with transparent pricing before booking.
- Mycotoxin / Mold Exposure Testing — $300–$500: Mycotoxin / Mold Exposure Testing is a diagnostic functional medicine service used to clarify the condition before treatment decisions are made.
- Follow-Up Consultation & Protocol Adjustment — $150–$350: Follow-Up Consultation & Protocol Adjustment is a common functional medicine entry point on OpenDoc with transparent pricing before booking.
Frequently asked questions
How much does a functional medicine consultation cost?
An initial comprehensive functional medicine evaluation typically costs $400 to $800 on a cash-pay basis, reflecting the extended visit time (60 to 90 minutes) and thorough systems review. Follow-up visits cost $150 to $350. Advanced lab panels add $300 to $1,000 depending on the tests ordered. While this represents a higher per-visit cost than conventional medicine, functional medicine aims to identify root causes that eliminate the need for ongoing symptom management.
Does insurance cover functional medicine?
Insurance rarely covers functional medicine visits or the specialized lab testing used in functional medicine. Most functional medicine practitioners have opted out of insurance networks because of reimbursement structures that do not support extended visit times or advanced testing. This makes transparent cash pricing on OpenDoc especially valuable — you know exactly what you will pay without coverage surprises.
What is the difference between functional medicine and conventional medicine?
Conventional medicine typically diagnoses diseases and treats symptoms with medications or surgery. Functional medicine seeks to identify and address the root causes of disease — such as nutrient deficiencies, gut dysbiosis, hormonal imbalances, toxin exposures, and chronic infections — using advanced testing and personalized interventions including nutrition, lifestyle modification, and targeted supplementation alongside conventional treatments when needed.
What lab tests do functional medicine doctors order?
Functional medicine practitioners order standard labs (metabolic panel, CBC, thyroid) plus specialized tests that conventional medicine rarely uses. These may include comprehensive stool analysis ($250-500), organic acids testing ($200-400), micronutrient panels ($200-450), adrenal cortisol mapping ($200-400), food sensitivity panels ($200-500), and mycotoxin testing ($300-500). Tests are selected based on your specific symptoms and health history.
Is functional medicine evidence-based?
Functional medicine draws from peer-reviewed research in systems biology, nutrigenomics, and environmental medicine, though as an integrative approach it combines established evidence with emerging research. Many individual interventions used in functional medicine (dietary modification, targeted supplementation, stress management) have strong evidence bases. The Institute for Functional Medicine (IFM) maintains certification standards and promotes evidence-based practice.
How long does it take to see results with functional medicine?
Most patients begin noticing improvements in energy, sleep, and digestive function within 4 to 8 weeks of implementing their personalized protocol. More complex conditions like autoimmune disease, hormonal imbalances, and chronic fatigue may take 3 to 6 months for significant improvement. Functional medicine typically involves 3 to 4 visits over the first 6 months, with lab retesting at 3-month intervals to track progress.
Do I need a referral to see a functional medicine practitioner?
No referral is needed on OpenDoc. You can search directly for a functional medicine physician. In fact, many patients seek functional medicine specifically because conventional approaches have not resolved their symptoms. Functional medicine practitioners coordinate with your existing doctors to provide complementary care.
What conditions respond best to functional medicine?
Functional medicine is particularly effective for chronic conditions with complex, multi-system involvement: autoimmune diseases, chronic fatigue, digestive disorders (IBS, SIBO), hormonal imbalances, metabolic syndrome, chronic inflammation, brain fog, and unexplained symptoms that conventional workups have not resolved. It is less appropriate for acute emergencies, infections requiring antibiotics, or conditions requiring surgery.