Gastrointestinal disorders encompass a wide range of conditions, from autoimmune issues like Crohn's disease and ulcerative colitis to food allergies and sensitivities, including celiac disease and gluten sensitivity.
Patients frequently arrive carrying several GI labels at once — reflux, IBS, colitis, food intolerance — each managed separately by a different specialist.
What connects them is the state of the gut ecosystem: microbial balance, barrier integrity, digestive capacity, and the immune tissue that surrounds the intestine.
Dr. Kellman approaches nearly every condition through a microbiome-first lens. For GI disease that means testing the ecosystem itself rather than treating each symptom in isolation.
Treatment restores microbial balance and barrier function, identifies the specific triggers driving immune reactivity, and rebuilds digestive capacity — often resolving symptoms that had been managed for years.
Conventional gastroenterology is excellent at structural diagnosis and acute management. Dr. Kellman's work addresses the microbiome and immune drivers underneath the diagnosis, and runs alongside that care rather than replacing it.
Microbiome analysis, assessment of intestinal permeability and digestive function, food reactivity and inflammatory markers, and screening for overgrowth such as SIBO. The findings determine the protocol.