Functional medicine by telehealth, led by advanced care clinicians with physician medical direction. We read where each result sits inside its range and which way it is moving, test what a standard panel skips (105+ epigenetic biomarkers, gut, hormones, nutrients, cortisol), and build the plan in the order your biology needs.
Book a Free Consultation How it works ↓
100+ five-star reviewsClinician-ledTelehealthHSA/FSA acceptedThen we build a clinician-guided plan around your actual biology.
Led by Our Team of Advanced Care Clinicians
100% Telehealth
Testing Nationwide
HSA/FSA Accepted
24 pages on advanced testing, clinician-led protocols, and why strategy comes before any single compound.
There is a reason your body is sending signals.
Stop being told everything looks normal. Start finding out what your body is actually showing you.
You want the dots connected, and a plan that follows the order your biology needs.
A reference range describes how results are distributed across a population. It is not a statement about what is ideal for you. Two people can sit inside the same range at opposite ends, moving in opposite directions, and both get reported as normal.
Normal is a population statistic. Optimal is a question about you. HFW pays attention to where a result sits within its range and which way it is moving, which is why we test to a baseline and retest, rather than reading one morning's blood draw as the whole story.
Understand the full picture, correct what is meaningful, then reassess as things change.
TruHealth is where we start: nutrients, cellular function, immune and inflammatory patterns, and hormone-related markers. Conventional bloodwork adds thyroid, metabolic, and safety markers when they change a decision. GI-MAP comes in when the gut is part of the picture, and hormone testing when the timing and pattern matter. Together, that is the picture your clinician builds the plan from.
A lot of people arrive wanting the advanced thing. Often there is something more basic in the way, and starting at the top of the menu means paying for an intervention that cannot work yet. Restorative sleep, nutrient status, blood sugar patterns, gut function, inflammatory patterns, stress physiology, and hormone balance are usually addressed first or alongside. A focused hormone, metabolic, or selected therapy pathway runs after evaluation, where the evidence and the monitoring plan support it.
The plan is reviewed and adjusted as your picture changes. Members repeat TruHealth roughly every quarter with a scheduled clinician review, so the plan follows your results rather than habit. See membership →
Progress is read across symptoms and markers together, reviewed with you as the plan progresses.
Cortisol rhythm, detox pathways, and stress resilience are evaluated when they are part of the picture.
24 pages on advanced testing, clinician-led protocols, and why strategy comes before any single compound.
Inside the range is not one place
A reference range describes how results are distributed across a population. It is not a statement about what is ideal for one person. Two people can both sit inside the same range, at opposite ends of it, moving in opposite directions.
Both results are inside the range, so both are usually reported as normal. A single value cannot tell you where either person started or which direction they are heading.
This is what HFW pays attention to. Where a result sits within its range, and which way it is moving across repeated measurement. That is a different question from whether a result is normal, and both questions are worth asking.
Illustrative only. No units or values are shown because this is not a reference range for any specific test, and it is not a result for any patient. Reference ranges are set by the performing laboratory. HFW does not replace diagnosis, screening, or the evaluation your other clinicians provide.
Sequence matters
A lot of people arrive wanting the advanced thing. Sometimes that is reasonable. Often there is something more basic in the way, and starting at the top of the menu means paying for an intervention that cannot work yet.
Often worth addressing first
Reasonable to run alongside, after evaluation
Which column applies to you is a clinical judgment, not a rule. The point is that the order is deliberate rather than driven by whatever you happened to read about first.
The Functional Medicine Corrective Program
Most people who start here have already been evaluated more than once. This program works through what is still unexplained in a deliberate order: understand the full picture, correct what is meaningful, then reassess as things change.
A conversation about your history, what has already been tried, and which starting point makes sense. This program is one way to work with HFW. Depending on what you are dealing with, a focused assessment or the Longevity Membership may fit better, and we will say so.
Every test price includes a 60 to 90 minute clinician review of your results. Longevity Membership members pay less on most testing. See member pricing →
105+ epigenetic biomarkers across nineteen systems that no standard panel covers, from one at-home blood spot: nutrient status, cellular function, inflammation, immune and hormone patterns, and exposures such as lead and PFAS. It is where most functional medicine plans at HFW start, and the test that is repeated to show whether the plan is working.
A full thyroid panel (TSH, free T3, free T4, reverse T3, antibodies), fasting insulin and glucose, HbA1c, lipids, liver and kidney markers, and inflammation. Ordered through a local lab and billed separately by the laboratory; recent usable results are reviewed first rather than repeated.
One at-home stool sample: pathogens, parasites, H. pylori, keystone and opportunistic bacteria, fungi, and viruses, plus markers for leaky gut, digestion, and inflammation. Ordered when the gut is part of the picture.
DUTCH ($650) for hormone production, metabolism, and cortisol rhythm. Adrenocortex ($300) for cortisol across the day. Metabolomix+ ($729) for nutrient deficits and cellular energy. IgG Food Sensitivity ($250) for immune reactivity to foods. Each is chosen by your clinician for a specific question, not ordered by default.
For symptoms that have not resolved, and answers that have not arrived. Most people who start here have already been evaluated more than once. This program works through what is still unexplained in a deliberate order.
Testing is chosen from your existing records and what would actually change the plan. HFW is self-pay and does not bill insurance; HSA and FSA cards are accepted.
Book a Free ConsultationA focused program can stand on its own. Membership is for people ready to make a commitment to healthy aging, or to longer-term corrective care and health optimization: the testing, the clinician, and the coaching around your plan all year, retesting each quarter and adjusting as the results change.
Begins after a separate $450 initial TruHealth assessment, which includes a 60 to 90 minute clinician review. Bloodwork, medications, and treatments are purchased separately.
Book a Free Consultation| Conventional Care | HFW Longevity | |
|---|---|---|
What they look at |
Symptoms, diagnosis codes, basic labs, and disease ranges
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Gut, hormones, metabolism, inflammation, nutrients, mitochondria, immune function, stress patterns, cellular health, and biological aging
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What you hear |
“Your labs look fine.”
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“Fine is not the same as optimal. Let’s look deeper.”
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Testing |
Standard bloodwork and population averages
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Advanced functional, metabolic, hormonal, gut, nutritional, inflammatory, longevity testing when appropriate and comprehensive bloodwork
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Treatment |
Medication, referral, or watchful waiting
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Correcting underlying contributors, diet and lifestyle guidance plus targeted therapies when clinically appropriate
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Support |
Short visits and limited follow-up
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Quarterly labs, regular check-ins, tracking, and protocol adjustments
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Goal |
Keep you out of disease range
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Improve how you feel, function, recover, perform, and age
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Access |
Office visits, referrals, long waits
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100% telehealth with at-home or local testing options
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What you hear
Real progress. Real support. No shame.
Stella Blanch Apo
It’s been a blessing working with Dr. Landi and his entire team! After getting my test results, Dr. Landi walked me through a number of helpful steps to restore my health. He is very knowledgeable and uses an in-depth functional medicine approach in addressing health concerns. Bernadette is also very kind and thoughtful and I enjoy the interpersonal connection I have built with all of them.
Chase Natale
Fatimah Fahmy
I have been working with Dr Landi for several months now. He is extremely knowledgeable, attentive and responsive. He actually listens which is rare in medicine these days. I’m excited to see what the results are from my protocol in a couple of months. Highly recommend his practice if you’re looking into functional medicine.
Lauren Griffith
Dr. Landi is highly knowledgeable and skilled in the field of functional medicine, but he also possesses a genuine empathy and compassion that is so often lacking in the traditional healthcare system. Dr. Landi connects to each of his patients on a personal level, works with you every step of the way, and makes you feel supported while navigating challenging health obstacles.
Kevin Heckman
I found out about the practice of Functional Dr’e last year and realized this is what I need! Finding Dr Landi so close to home was awesome. We appreciated his candor, knowledge and engaging personality. He exuded caring and interest in me and my situation. I feel he had repeatedly gone the extra mile for me so our collaboration is successful.
Your symptoms are connected to your whole system.
| What We Evaluate | Why It Matters |
|---|---|
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Gut Health
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Gut dysfunction can affect inflammation, immune activity, nutrient absorption, hormones, mood, metabolism, and brain function.
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Hormonal Health
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Estrogen, progesterone, testosterone, thyroid, insulin, and cortisol influence energy, weight, sleep, mood, libido, and recovery.
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Cellular Function
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Cellular stress can affect how well your body repairs, produces energy, regulates inflammation, and responds to treatment.
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Metabolic Health
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Blood sugar, insulin, lipids, and metabolic flexibility can influence weight, cravings, fatigue, inflammation, and long-term disease risk.
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Inflammation
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Chronic inflammation can drive pain, fatigue, brain fog, hormone disruption, immune activation, and accelerated aging.
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Mitochondrial Function
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Your mitochondria produce cellular energy. When they struggle, you may feel tired, slow, inflamed, and harder to recover.
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Immune Function
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Immune imbalance may contribute to chronic symptoms, autoimmunity, reactivity, poor recovery, and unresolved inflammation.
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Detox Pathways
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Liver, kidney, lymphatic, and cellular detox pathways affect hormone clearance, inflammation, energy, and resilience.
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Stress Resilience
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Cortisol rhythm, nervous system regulation, sleep quality, and recovery capacity can keep the body stuck in survival mode.
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Biological Aging
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Your chronological age does not always match how your organs, immune system, metabolism, and cells are aging.
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Gut dysfunction can affect inflammation, immune activity, nutrient absorption, hormones, mood, metabolism, and brain function.
Estrogen, progesterone, testosterone, thyroid, insulin, and cortisol influence energy, weight, sleep, mood, libido, and recovery.
Cellular stress can affect how well your body repairs, produces energy, regulates inflammation, and responds to treatment.
Blood sugar, insulin, lipids, and metabolic flexibility can influence weight, cravings, fatigue, inflammation, and long-term disease risk.
Chronic inflammation can drive pain, fatigue, brain fog, hormone disruption, immune activation, and accelerated aging.
Your mitochondria produce cellular energy. When they struggle, you may feel tired, slow, inflamed, and harder to recover.
Immune imbalance may contribute to chronic symptoms, autoimmunity, reactivity, poor recovery, and unresolved inflammation.
Liver, kidney, lymphatic, and cellular detox pathways affect hormone clearance, inflammation, energy, and resilience.
Cortisol rhythm, nervous system regulation, sleep quality, and recovery capacity can keep the body stuck in survival mode.
Your chronological age does not always match how your organs, immune system, metabolism, and cells are aging.
We test what most routine visits ignore.
| Test | What It Can Reveal |
|---|---|
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Comprehensive Bloodwork
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Metabolic health, inflammation, thyroid patterns, nutrient status, hormone markers, liver function, immune markers, safety markers, and cardiovascular risk
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GI-MAP Stool Analysis
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Gut bacteria balance, dysbiosis, pathogens, inflammation, digestion, immune activity, and gut barrier markers
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DUTCH Complete Hormone Test
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Sex hormones, hormone metabolites, cortisol rhythm, adrenal patterns, and hormone clearance
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Metabolomix+ Nutritional Panel
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Nutrient deficiencies, oxidative stress, amino acids, mitochondrial markers, gut metabolites, and cellular energy patterns
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TruAge + TruHealth Testing
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Biological age, pace of aging, and organ-system health across immune, metabolic, hormonal, cardiovascular, and other systems
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Adrenocortex Stress Profile
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Cortisol output, adrenal rhythm, stress physiology, sleep disruption, fatigue, and recovery patterns
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IgG Food Sensitivity Explorer
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Immune reactivity patterns that may contribute to inflammation, digestive symptoms, skin issues, fatigue, and energy crashes
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Genetic Testing
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Nutrient processing, detox pathways, inflammation tendencies, hormone metabolism, and personalized long-term risk strategy
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NAD+ Level Testing
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Cellular energy status and aging-related patterns that may guide mitochondrial and longevity support
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Custom Blood Panel
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A targeted panel built around your symptoms, goals, history, protocol, and provider recommendations
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Metabolic health, inflammation, thyroid patterns, nutrient status, hormone markers, liver function, immune markers, safety markers, and cardiovascular risk
Gut bacteria balance, dysbiosis, pathogens, inflammation, digestion, immune activity, and gut barrier markers
Sex hormones, hormone metabolites, cortisol rhythm, adrenal patterns, and hormone clearance
Nutrient deficiencies, oxidative stress, amino acids, mitochondrial markers, gut metabolites, and cellular energy patterns
Biological age, pace of aging, and organ-system health across immune, metabolic, hormonal, cardiovascular, and other systems
Cortisol output, adrenal rhythm, stress physiology, sleep disruption, fatigue, and recovery patterns
Immune reactivity patterns that may contribute to inflammation, digestive symptoms, skin issues, fatigue, and energy crashes
Nutrient processing, detox pathways, inflammation tendencies, hormone metabolism, and personalized long-term risk strategy
Cellular energy status and aging-related patterns that may guide mitochondrial and longevity support
A targeted panel built around your symptoms, goals, history, protocol, and provider recommendations
Built around your biology. Depending on your testing, symptoms, and goals, your plan may include.
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Nutrition + Lifestyle Strategy
We review your symptoms, health history, and goals, then talk through whether HFW is the right fit.
Testing establishes your baseline. An advanced care clinician then interprets it alongside your history, symptoms and goals, and builds a prioritized plan you can actually start.
We address the contributors behind your symptoms with targeted protocols, supported by nutrition and lifestyle strategy.
Your plan may include dietary guidance, supplements, prescriptions, and advanced therapies when clinically appropriate, with ongoing monitoring.
Quarterly labs and regular reviews help you protect your progress and keep your plan aligned as your biology changes.
| We Track | Why It Matters |
|---|---|
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Energy Pattern
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Shows how your metabolism, mitochondria, hormones, nutrients, sleep, and stress response are changing
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Sleep Quality
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Helps track cortisol rhythm, nervous system regulation, hormone balance, recovery, and inflammation
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Gut Markers
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Identifies dysbiosis, inflammation, digestion, immune activity, and absorption patterns
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Hormone Patterns
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Shows how thyroid, cortisol, estrogen, progesterone, testosterone, insulin, and DHEA may affect symptoms
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Metabolic Markers
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Tracks glucose, insulin, HbA1c, lipids, liver markers, and metabolic risk patterns
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Inflammatory Markers
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Shows whether inflammation may be affecting pain, fatigue, brain fog, hormones, or recovery
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Nutrient Status
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Helps identify deficiencies that may affect energy, mood, immunity, hormones, and cellular function
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Mitochondrial Markers
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Helps evaluate cellular energy, oxidative stress, recovery, and fatigue patterns
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Immune Reactivity
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Helps guide food, inflammation, autoimmune, and immune-support strategies
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Biological Age
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Tracks how your body is aging beneath the surface, not just your chronological age
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Symptoms
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Energy, mood, focus, digestion, cravings, sleep, pain, skin, libido, recovery, and resilience
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Shows how your metabolism, mitochondria, hormones, nutrients, sleep, and stress response are changing
Helps track cortisol rhythm, nervous system regulation, hormone balance, recovery, and inflammation
Identifies dysbiosis, inflammation, digestion, immune activity, and absorption patterns
Shows how thyroid, cortisol, estrogen, progesterone, testosterone, insulin, and DHEA may affect symptoms
Tracks glucose, insulin, HbA1c, lipids, liver markers, and metabolic risk patterns
Shows whether inflammation may be affecting pain, fatigue, brain fog, hormones, or recovery
Helps identify deficiencies that may affect energy, mood, immunity, hormones, and cellular function
Helps evaluate cellular energy, oxidative stress, recovery, and fatigue patterns
Helps guide food, inflammation, autoimmune, and immune-support strategies
Tracks how your body is aging beneath the surface, not just your chronological age
Energy, mood, focus, digestion, cravings, sleep, pain, skin, libido, recovery, and resilience
You should not have to wonder whether your plan is working.
You should be able to see it.
We do not do generic wellness. We build clinical strategies around your biology.
After getting my test results, Dr. Landi walked me through a number of helpful steps to restore my health. He is very knowledgeable and uses an in-depth functional medicine approach.
Stella Blanch ApoWe appreciated his candor, knowledge and engaging personality. He exuded caring and interest in me and my situation. I feel he had repeatedly gone the extra mile for me so our collaboration is successful.
Kevin HeckmanClinician-led care with physician medical direction.
Christina Warner, APN-CBoard-Certified Women's Health Nurse Practitioner · Advanced care clinician
Dr. Eric Landi, KICP, DCCo-Founder · Longevity and Functional MedicineMedical direction: Dr. Saul Maslavi, MD, Board-Certified Family Medicine Physician
Meet the team →Advanced care clinicians. Measurement-informed strategy. Long-term optimization.
Dr. Eric Landi, KICP, DC
Over a decade of clinical experience with advanced functional testing, peptide therapy, metabolic optimization, and data-driven longevity protocols.
Medical Director
Book a free telehealth consultation to talk through the gut, hormone, metabolic, inflammatory, nutrient, stress, immune, and cellular patterns that may be driving your symptoms, and whether we are the right team to help.
Book a Free ConsultationBased in Hillsdale, New Jersey. Care by telehealth.
Short answers to what people ask before booking.
Functional medicine is an approach that looks for patterns and possible contributors behind symptoms rather than treating each symptom in isolation. It considers gut function, nutrient status, metabolic health, inflammation, hormone patterns, sleep, stress, and environmental exposures together. At HFW it is practiced alongside conventional medicine, not instead of it, and it does not replace necessary diagnosis, screening, or specialist care.
Being inside a reference range is not the same as being optimal or being fully evaluated. Reference ranges describe populations, not individuals, and a standard panel may not include markers relevant to your specific question. HFW starts by clarifying what has already been ruled out, reviews your existing records, then selects testing that could change a decision. Sometimes the useful next step is a different test. Sometimes it is a conventional referral. Sometimes it is addressing sleep, nutrition, or metabolic health first.
Commonly, persistent fatigue, poor sleep, brain fog, digestive symptoms such as bloating or irregularity, unexplained weight change or weight resistance, low libido, mood or stress-related symptoms, recurrent inflammation, and symptoms that span more than one body system. Investigating a symptom is not the same as treating a disease. If your presentation suggests something that requires conventional diagnosis or urgent care, HFW will tell you and refer.
Because symptoms like persistent fatigue, brain fog, poor sleep, digestive problems, and low libido are real to the person experiencing them, even when they do not map onto a diagnosis and even when standard testing looks unremarkable. A short appointment built around ruling out disease will often, correctly, find no disease, and then have nothing further to offer. HFW starts from the symptom rather than from the diagnosis, looks for patterns and possible contributors across systems, and builds a prioritized plan. That is not a promise to explain everything. Some symptoms need conventional diagnosis or a specialist, and HFW refers when that is the case.
The honest answer is that it varies by the specific test and the specific intervention. Some tools are well established, some are emerging, and some are proposed mechanisms rather than proven patient outcomes. HFW’s position is to be explicit about which is which, to select testing when the result can change a decision, and to keep conventional evaluation and safety in the plan. HFW does not position functional medicine as a replacement for necessary diagnosis, screening, emergency care, or specialist treatment.
Two things. First, prioritization. Functional medicine can become broad and protocol-heavy, producing a long list of tests and supplements without a clear sequence. HFW aims to give you a ranked plan and a defined next step. Second, integration. Conventional medicine stays in the model, including bloodwork, referrals, and guideline-recommended screening. HFW also builds in implementation support and scheduled reassessment rather than ending at the recommendation.
It is a corrective-care program, typically ten to twelve months, for people with unresolved or multi-system concerns who need more than a single optimization protocol. The first month is $700 and covers building your plan along with your first two months of clinician-selected supplements or advanced compounds, which typically carry a retail value of more than $500. Continuing months start at $350. The program includes four scheduled advanced care clinician consultations, one additional on-demand consultation, eight accountability sessions, and Patient Success coordination. Testing is selected and purchased separately based on your existing records and what would actually change the plan.
The Functional Medicine Corrective Program starts with something meaningful to clarify or correct. The Longevity Membership starts with improving health and function in a generally stable person. The two can overlap, and a patient may need to address gut, nutrient, metabolic, inflammatory, or hormone concerns before or alongside optimization. The practical differences are that the Functional Medicine Corrective Program is $700 for month one then $350 per month with testing purchased separately, while membership is $225 per month and includes four quarterly TruHealth tests.
Testing is chosen from your history and the question your clinician is trying to answer, not from a standard panel everyone receives. Commonly used tools include comprehensive bloodwork, TruHealth, GI-MAP stool testing, hormone testing including DUTCH when appropriate, and selected nutrient, metabolomic, or environmental assessments. HFW reviews recent usable results before ordering duplicates.
No, and you should be skeptical of any practice that says otherwise. More data is not automatically better care. HFW selects testing when the result can change a priority, a therapy, a safety decision, or a monitoring plan. Your clinician should be able to tell you what a specific test would change before you pay for it.
It depends on what is driving your symptoms. The Functional Medicine Corrective Program runs 12 months because meaningful correction is usually staged rather than immediate, and because response has to be measured before the next step is chosen. Some foundational changes are felt earlier. HFW will tell you what is being measured and when it will be reassessed rather than promising a timeline.
HFW can prescribe within the licensed scope of an appropriately authorized HFW prescriber, and does select supplements as part of a plan. What HFW does not do is guarantee any of it. A request begins an evaluation. Whether a medication, hormone, peptide, or supplement is appropriate depends on your history, goals, risks, testing, alternatives, and what is permitted in your state.
Have more questions? Ask Healie →
