Dr. Mychael Seubert, ND practices root-cause naturopathic medicine for people who have already been through the system and still don’t have answers. New patients begin with a short Meet & Greet — in person on Long Island or virtually anywhere in the U.S.
Most people who come to me have a stack of labs, a list of specialists they’ve seen, and a diagnosis that either took years to get — or still hasn’t come. They don’t need more guesswork. They need someone who looks at the full picture.
My clinical work centers on the relationship between gut health, immune function, and hormonal balance — particularly thyroid and adrenal. These systems don’t operate in isolation. When they’re addressed together, patterns that seemed unsolvable often become clear.
“I went to the hospital for five days, then to a rheumatologist, urologist, neurologist. Nobody could figure it out. After one visit with Dr. Seubert, we had answers.”
Every plan begins with a full picture — your labs, your history, your symptoms and how they connect.
A full 60–90 minute intake covering your health history, existing labs, symptoms, and goals — without a clock on the wall.
ILADS-trained protocols for chronic Lyme, co-infections, and tick-borne illness. For patients still suffering after standard antibiotic treatment.
GastroANP-affiliated specialist in IBS, ulcerative colitis, SIBO, acid reflux, and diverticulitis. Root cause identification when GI specialists haven’t solved it.
Individualized care for Sjogren’s, Hashimoto’s, lupus, and other autoimmune conditions. Focused on underlying triggers and reducing systemic inflammation.
Natural support for thyroid dysfunction, perimenopause, and hormonal imbalance. Lab interpretation that moves beyond TSH.
Natural treatment for cortisol imbalance, adrenal fatigue, burnout, and stress-driven hormonal disruption including PTSD presentations.
In-depth interpretation of your existing lab results beyond standard reference ranges. Dr. Seubert does not perform blood testing or draws. Multiple patients received their first correct diagnosis after one consultation.
Non-invasive functional workups — GI-MAP stool analysis, DUTCH urine hormone testing, organic acids (OAT), breath testing, and food sensitivity assessment — to surface root drivers conventional workups miss. No blood testing or draws are performed.
Science-informed, individualized plans built around your labs, health history, and goals. Every recommendation has a clinical rationale.
Secure virtual appointments for new and returning patients across the country. Full naturopathic care from wherever you are.
Public-health context that frames why patients seek out a naturopathic doctor — and why root-cause work matters.
Americans live with a chronic condition often tied to gut, immune, or hormonal imbalance.
Source: CDC, National Center for Chronic Disease Prevention, 2024.View source ↗Estimated new Lyme disease diagnoses each year in the United States — Long Island is among the highest-burden regions.
Source: CDC Vector-Borne Diseases Surveillance, 2024.View source ↗Of the U.S. population meets diagnostic criteria for IBS — many remain unresolved after standard GI workups.
Source: American College of Gastroenterology, 2021 IBS Clinical Guideline.View source ↗Average length of a U.S. primary-care visit — versus the 60–90 minute new-patient consultations in this practice.
Source: Medical Care, Neprash et al., 2023 (PMC10117517).View source ↗Average verified Google rating from Long Island patients across Riverhead, Huntington, and Garden City reviews.
Source: Google Business Profile, verified reviews, 2026.View source ↗U.S. states served via secure HIPAA-compliant telehealth — care continues from anywhere in the country.
Source: AANP — Naturopathic Medicine Licensure & Telehealth.View source ↗“I’ve had digestive issues since my 30s. I’m now 61. Dr. Seubert identified SIBO — something other doctors literally rolled their eyes at. I haven’t had reflux or gas since treating it.”
“Finding a doctor who actually knows Lyme has been nearly impossible. Dr. Seubert is the exception. His compassion is overcoming my fear of doctors built up from years of dismissal.”
“Conventional doctors wanted to give me drugs to dull the pain. Dr. Seubert stuck with me until figuring out what I needed. I can say today that I’m almost normal again.”
“After many doctors wouldn’t help me, Dr. Seubert addressed every single concern. After starting supplements, it took less than two weeks to feel the effects.”
“Instead of being rushed or dismissed, my concerns were heard. He identified underlying imbalances that had been affecting me for a long time. The results are real and noticeable.”
“I was so frustrated not receiving answers at previous doctors. Dr. Seubert truly takes the time to listen and find long-term solutions. You are never rushed.”
Dr. Seubert developed health issues of his own that conventional medicine couldn’t resolve. He found answers through naturopathic care. That firsthand experience shapes everything about how he practices.
ILADS clinical training for Lyme. GastroANP membership for digestive disorders. Earned qualifications in areas where most practitioners offer only surface-level care.
Patients have received calls from Dr. Seubert on weekends when he found something important in their case. He tracks. He follows up. He doesn’t hand you a protocol and send you home.
He’s not managing you indefinitely. Patients routinely reduce or come off prescription medications as root causes are found and addressed.
Dr. Mychael Seubert earned his Doctorate in Naturopathic Medicine from the Southwest College of Naturopathic Medicine and Health Sciences and has been in clinical practice for over ten years. He holds membership in the AANP, GastroANP, and NYANP, and has completed advanced clinical training in Lyme and tick-borne illness through ILADS.
His clinical focus centers on the interconnection between gut health, immune function, and hormonal balance — particularly thyroid and adrenal health.
The protocols used in this practice draw from peer-reviewed naturopathic literature, ILADS guidance, GastroANP clinical resources, and standard endocrinology guidelines. Selected references and quotations are listed below.
“Persistent symptoms following recommended treatment for Lyme disease can be debilitating and merit a careful, individualized approach.”
“Small intestinal bacterial overgrowth (SIBO) is increasingly recognized as a contributor to symptoms previously attributed to functional bowel disease.”
“Thyroid dysfunction, including subclinical patterns, can present with fatigue, weight change, and cognitive complaints that warrant evaluation beyond TSH alone.”
“Naturopathic doctors are trained as primary care providers in an accredited four-year, in-residence medical program emphasizing nutrition, botanical medicine, and prevention.”
Reserve a brief introductory visit using the button below, or call the practice directly. There is no obligation to continue — the goal is for you to see how Dr. Seubert works before committing to a full consultation.
Book a Meet & GreetReceive secure intake forms by email covering your full health history, current lab work, medication list, supplements, diet, sleep, and primary concerns. The more detail you provide, the more thorough the first visit.
Review your full case in person at Riverhead, Huntington, or Garden City — or via secure telehealth in any U.S. state. You leave with a written plan and a clear understanding of next steps.
Dr. Seubert sees patients in Garden City. Call to check availability.
(631) 722-2246Full naturopathic care for new and existing patients anywhere in the U.S.
(631) 722-2246Clinical perspectives on Lyme disease, gut health, thyroid function, autoimmune conditions, and navigating complex chronic illness.
Learn how to calm autoimmune flares with practical, whole-person steps for rest, food, stress, and careful support when symptoms suddenly arise at home.
Thyroid symptoms versus iron deficiency can overlap. Learn what patterns, labs, and root-cause questions may clarify persistent fatigue and more daily.
Telehealth care gives complex chronic health concerns the time, context, and personalized attention they deserve from wherever you are in the U.S. today.
When should thyroid labs repeat? Learn what timing affects results, which markers add context, and why persistent symptoms deserve a thoughtful review.
This histamine reaction guide explains common patterns, urgent warning signs, and thoughtful ways to explore food, gut, hormone, and immune factors too.
Learn how to balance perimenopause nutrition with steady meals, protein, fiber, and individualized support for energy, sleep, digestion, and mood shifts.
New and existing patients welcome. Start with a Meet & Greet to get acquainted with Dr. Seubert before committing to a full consultation.
Answered plainly. No jargon, no hedging.
New York State does not currently license naturopathic doctors. Dr. Seubert holds active licenses in Arizona and Connecticut, and is a NYANP member which requires licensure in at least one licensing state. He practices on Long Island in accordance with New York State law.
Lyme disease and tick-borne illness (ILADS-trained), digestive disorders including IBS, SIBO, ulcerative colitis (GastroANP-affiliated), autoimmune conditions, thyroid and adrenal dysfunction, hormonal imbalance, perimenopause, and complex chronic illness.
No referral is needed. Book directly online or call (631) 722-2246. Dr. Seubert works alongside your existing medical team.
Yes. Telehealth is available for new and returning patients in all 50 U.S. states. Virtual visits include full consultations, lab review, protocol management, and follow-ups.
New patient consultations are 60–90 minutes. Dr. Seubert reviews your full health history, current symptoms, existing lab work, medications, supplements, diet, and lifestyle. The goal is to understand the full picture.
ILADS is the International Lyme and Associated Diseases Society. ILADS-trained doctors are educated in chronic Lyme, co-infections, and cases where standard testing has missed or minimized the diagnosis. Long Island has one of the highest Lyme rates in the U.S.
This is the most common situation Dr. Seubert encounters. Standard panels use broad reference ranges and often miss subclinical imbalances. In-depth interpretation using functional ranges frequently reveals patterns that explain persistent symptoms.
Dr. Seubert is currently seeing patients from Garden City, NY by telehealth. Call (631) 722-2246 to check availability or book online.
No. Dr. Seubert does not perform blood testing or blood draws. His testing is non-invasive — stool, urine, saliva, and breath-based functional testing — and he will interpret lab results you already have from your other providers using functional ranges.
Whether you’re on Long Island or anywhere in the country, this is where it starts.