Led by One of the Country’s Leading Gastroenterologists
The Gut & Microbiome Center for Excellence is led by Dr. Will Bulsiewicz, a triple board-certified gastroenterologist, 3x New York Times bestselling author, and one of the most trusted voices in gut and microbiome health today. Patients can work with Dr. B directly, with his physician assistant under his direct consultation, or with our nutrition specialist.
We blend the best of conventional gastroenterology, integrative microbiome science, and lifestyle medicine — delivered with the depth and attention that comes from working with a small, dedicated team, not a high-volume practice.
How It Works
Share Your Story
Your care begins with a thorough intake form that captures your symptoms, history, lifestyle patterns, and personal goals. This allows our team to understand your story and determine the most appropriate starting point for your care.
Meet Your Care Team
Depending on what your case calls for, you'll be matched with the clinician best suited to your needs — whether that's working one-on-one with Dr. B himself, with his physician assistant Kate D'Orazio (with Dr. B consulting directly on your case), or with our nutrition specialist Kathryn Adel, RDN, for nutrition-focused care.
Personalized Plan
You'll leave with a plan built specifically for your physiology and goals — not a generic protocol. Whether that means medical management, nutrition therapy, microbiome-focused strategy, or a follow-up consultation with Dr. B directly, every recommendation is grounded in the same rigor that has made Dr. Bulsiewicz's work trusted by millions.
Our Clinical Services
We offer several forms of expert-guided care that may be used individually or together, depending on your medical and nutritional needs.
Medical & Preventive Care, Tailored to You
Intake → Visit 1: In-depth Consultation → Visit 2: Personalized Plan
Whether you’re managing a specific condition or want to invest in long-term prevention, we provide both medical and preventive digestive care. If you’re struggling with persistent digestive symptoms, chronic inflammation, or complex GI concerns that haven’t fully resolved, our medical consultations are designed to look deeper — identifying root drivers and creating a clear, personalized path forward. We also offer preventive digestive health consultations for individuals who feel well but want to proactively strengthen their gut, optimize microbiome health, and build long-term resilience before problems develop.
Care is available in two ways: working with PA Kate D’Orazio, who consults directly with Dr. B on your case, or working one-on-one with Dr. Will Bulsiewicz himself. You’ll choose the track that’s right for you when you schedule.
Expert Nutrition Care
Intake → Nutrition Assessment & MNT Plan
Expert Nutrition Care for a Healthier Gut.
Work one-on-one with Kathryn Adel, MS, RDN, LD, CSDH — a registered dietitian nutritionist who holds one of the first national board certifications recognizing advanced expertise in gastrointestinal nutrition, the CDR’s Board Certified Specialist in Digestive Health. Kathryn translates your care plan into a nutrition strategy you can actually live with: practical, personalized guidance on fiber diversity, food triggers, and dietary patterns shown to support gut healing, delivered with the same evidence-based rigor as the rest of your care team.
Work Directly with Dr. B
Intake → Meet with Dr. B
Work directly with Dr. Will Bulsiewicz (“Dr. B”), a triple board-certified gastroenterologist and lifestyle medicine physician known for translating leading-edge gut and microbiome science into clear, practical care. Whether you need a single consultation or ongoing follow-up, your time with Dr. B is intentional, focused, and deeply personalized. Each visit goes beyond symptom control to identify underlying drivers, prioritize what truly matters, and create a clear, evidence-based strategy tailored to your physiology and goals.
For those who benefit from continuity, follow-up consultations are available to refine and adapt your plan over time. Complex digestive and inflammatory conditions rarely resolve in a single step; progress requires thoughtful iteration. Through coordinated integration of medical, nutritional, microbiome, and lifestyle strategies, we replace fragmented care and guesswork with a cohesive roadmap built for measurable, lasting results.
What We Prioritize in Your Care
1. Digestive Health & GI Conditions
We evaluate symptoms, disorders, and digestive patterns to understand the root causes driving discomfort or dysfunction.
2. Chronic Inflammation & Immune Response
Your gut-immune axis plays a central role in inflammatory and autoimmune conditions. We assess how your microbiome and immune system interact to affect whole-body health.
3. Prevention & Long-Term Resilience
We look for early patterns — microbiome shifts, lifestyle factors, and clinical signals — to help prevent future disease and strengthen long-term gut resilience.
Pricing / Services
Care Plan Shaped by Dr. B, Delivered by Kate D’Orazio, PA-C.
- Initial Consult (2 visits):
$1,150
- Follow-up Visit (60 min):
$650
Your visits are with Kate D’Orazio, PA-C, working under Dr. B’s direct consultation on your case — ensuring every plan benefits from his expertise even when he isn’t in the room. Your Initial consult is a two-visit process to fully evaluate your history, review diagnostics, and build your personalized care plan; Follow-up Visits keep your progress on track and your plan current, with Dr. B’s continued involvement..
Expert Nutrition Care for a Healthier Gut
- Initial Consult (1 visit):
$300
- Follow-up Visit (1 visit):
$225
Work one-on-one with Kathryn Adel, MS, RDN, LD, CSDH — a registered dietitian nutritionist among the first in the country to hold the CDR’s Board Certified Specialist in Digestive Health credential, recognizing advanced expertise in gastrointestinal nutrition. Kathryn translates the science of gut health into a strategy you can actually live with: precise, personalized guidance on fiber diversity, food triggers, and dietary patterns shown to support healing — delivered with the same rigor and attention as every track of care at the clinic.
Work Directly with Dr. B
- New Patient Consultation (90 minutes):
$2,250
- Follow-up Visit (60 minutes):
$1,650
- Follow-up Visit (30 minutes):
$1,100
A rare opportunity to partner one-on-one with Dr. Will Bulsiewicz himself — one of the country’s leading gastroenterologists, whose time is reserved for a limited number of patients. In this in-depth review of your history, prior workups, and goals, Dr. B builds a personalized diagnostic and treatment plan entirely around you — the same clinical rigor that has made his work trusted by millions, now applied directly to your case. Follow-up visits are available in 60- or 30-minute lengths, so you can choose the depth needed to track progress, refine your plan, and adjust your protocol as your case evolves.
Meet the Team
Will Bulsiewicz, MD, MSCI
Triple Board-Certified: Gastroenterology, Internal Medicine & Lifestyle Medicine
3x New York Times Bestselling Author
Dr. Will Bulsiewicz is one of the country's leading voices in gut and microbiome health, a triple board-certified physician whose work has reached millions through his three New York Times bestselling books and appearances on Good Morning America, PBS, Fox, and ABC. As Founder and Medical Director of the Gut & Microbiome Center for Excellence, he brings that same expertise, paired with a deeply personal approach to care, to every patient he sees. View more
Dr. Bulsiewicz earned his BS from Vanderbilt University and his MD from Georgetown University, followed by residency at Northwestern Memorial Hospital, where he served as Chief Resident, and a gastroenterology fellowship at UNC Hospitals, where he served as Chief Fellow and received the Award for Excellence in Clinical Gastroenterology — recognition reserved for the top physician in each graduating class. He holds an MSCI from Northwestern University and was inducted into Alpha Omega Alpha, the nation's most prestigious medical honor society.
He is the author of more than 25 peer-reviewed publications, with his research cited over 5,000 times by fellow scientists. He has delivered more than 50 scientific presentations, from keynotes at major medical conferences to briefings for Congress, the USDA, and the NFL Alumni.
His books, Fiber Fueled, The Fiber Fueled Cookbook, and Plant Power Plus, have made him one of the most trusted voices in gut health, and his work has been featured on Good Morning America, PBS, Fox, and ABC.
Kate D’Orazio, PA-C
Physician Assistant
Diplomate, Institute for Integrative Nutrition
Expert in GI evaluation, lifestyle medicine, and patient-centered digestive health care. Primary clinician for medical consultations and follow-up care.
Kathryn Adel, MS, RDN, LD, CSDH
Registered Dietitian
Board Certified Specialist in Digestive Health
Expert in Medical Nutrition Therapy for digestive disorders, microbiome balance, and chronic inflammation.
Where We Are Available
Medical & Preventive Consultation
- South Carolina
- Florida
- Georgia
- International (outside the United States)
More coming soon
- California
- Texas
- New York
- Illinois
- North Carolina
- Tennessee
- Colorado
Medical Nutrition Services
- Arizona
- California
- Colorado
- Florida
- Georgia
- Maryland
- Michigan
- New Jersey
- South Carolina
- Virginia
- International (outside the United States)
- Canada
Questions? We got answers
FAQs
Will I be working directly with Dr. B?
Dr. B serves as Medical Director and is actively involved in guiding the clinical strategy of the practice. All medical and preventive care plans are developed within a physician-led framework and reviewed under his supervision to ensure alignment with our evidence-based, root-cause approach.
Patients who wish to work directly with Dr. B may schedule a New Patient Consultation or Follow-up Visit with him. All other medical consultations are conducted by PA Kate D’Orazio, who works under Dr. B’s direct consultation to deliver cohesive, physician-guided care.
What changes can I expect to see?
We do not guarantee outcomes, but patients often experience improved digestive function, reduced inflammation patterns, enhanced energy, and greater clarity about their health. Your results depend on your condition, medical needs, and individualized treatment plan.
How does nutrition play a role in this program?
Nutrition is a core pillar of digestive and inflammatory health.
You may work with our Registered Dietitian, Kathryn Adel, to receive formal Medical Nutrition Therapy. MNT bundles are available.
How can I share information with my primary care physician?
With your written consent, we can provide summaries, laboratory interpretations, and clinical documentation directly to your primary care provider.
Can I use an HSA/FSA to pay for GMCE?
You may choose to submit your receipts to your HSA/FSA provider for potential reimbursement, but GMCE does not process HSA/FSA payments directly.
Do you accept insurance?
No. The Gut and Microbiome Center for Excellence operates on a self-pay basis and does not bill or accept insurance directly. This model allows Dr. B to spend meaningful, unhurried time with each patient rather than working within the constraints of a typical insurance-based visit.
Why doesn’t the clinic accept insurance?
Working outside of insurance allows Dr. B to focus entirely on your care without the volume-driven visit limits, prior authorizations, and administrative constraints that come with insurance-based practices. This structure is what makes the level of access and attention at the core of this clinic possible.
Is Dr. B my primary gastroenterologist or primary care provider?
No. Dr. B is available for scheduled consultations within the scope of this practice, but is not able to provide urgent or emergency care and does not serve as your primary gastroenterologist or primary care provider. All patients should maintain a primary care provider and a local gastroenterologist they can contact for urgent concerns. For patients local to the Charleston, SC area who don’t currently have a local GI, Dr. B can refer you to a trusted colleague.
What if I have an urgent gastrointestinal issue?
This practice is not equipped to handle urgent or emergency care. For urgent concerns, please contact your primary care provider, local gastroenterologist, or go to the nearest emergency room.
Do you see pediatric patients?
No. This is an adult gastroenterology practice and we do not see patients under 18.
Do I need to re-establish care if it’s been a while since my last visit?
If more than 6 months have passed since your last appointment (we allow a 30-day grace period beyond that), your next visit is billed as a New Patient or Initial visit rather than a Follow-up. This isn’t a penalty — it simply gives us the time to properly review what’s changed in your health since we last saw you and make sure your care plan still reflects where you are today before moving forward.
Ready to Begin Your Care?
Your digestive health is the foundation of your wellbeing.
We’re here to help you understand it, restore it, and protect it — with world-class medical care delivered in a warm, supportive environment.
