Dr. Raphael Kellman, the leader in microbiome medicine offers a revelatory guide to the gut-thyroid connection, with cutting-edge information and a 30-day Thyroid Rescue Program in his brand new book MICROBIOME THYROID.

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      Our Location

      7 West 45th Street,
      Suite 301
      New York, NY 10036


      Patient with gastrointestinal issues in need of help from NYC Gastroenterologists


      Gastrointestinal disorders encompass a wide range of conditions, from autoimmune issues like Crohn’s disease and ulcerative colitis to food allergies and sensitivities.

      This includes Celiac disease and gluten sensitivity. According to the National Institute of Diabetes and Digestive and Kidney Disease, digestive tract diseases affect 60 to 70 million people.

      Many physicians, including gastroenterologists, take a narrow and shallow view of digestive, or gut, issues. They focus on symptoms and medicate superficial problems instead of looking at the underlying issues that lead to gut dysfunction. Many members of the medical community fail to recognize how extensive the influence of the gut—specifically, the microbiome—can be, causing many symptoms that seem unrelated to digestive health, such as headaches, acne, fatigue, and even depression.

      We help identify microbiome imbalances, such as small intestinal bacterial overgrowth (SIBO). By restoring a healthy balance to the trillions of bacteria that live in the digestive system, we transform patients’ lives for the better. Not only do digestive symptoms disappear, but patients also experience more energy, greater clarity, and better spirits—a testament to the power of healing the gut.


      Gastrointestinal disorders can produce a wide range of symptoms, many of which seem unrelated to the digestive system:

      • Acne
      • Anxiety
      • Autism
      • Autoimmune disorders
      • Bloating
      • Cancer
      • Cardiovascular disorders
      • Constipation
      • Decreased immune function
      • Depression
      • Diabetes
      • Diarrhea
      • Eczema
      • Gas
      • Heartburn
      • Hypothyroidism
      • Intestinal pain
      • Irritable bowel syndrome
      • Joint pain
      • Metabolic syndrome
      • Mood swings
      • Muscle pain
      • Osteoporosis
      • Psoriasis

      Any of these conditions could indicate an underlying gastrointestinal disorder.


      Many different factors can stress the gut and throw the microbiome out of balance. Common causes include the overuse of antibiotics; non-steroidal anti-inflammatory drugs (NSAIDs), such as aspirin and ibuprofen; and proton-pump inhibitors, which reduce gastric acid production. Tension can also damage the microbiome.

      Diet plays a critical role in the health of these beneficial bacteria. A number of foods—including those containing sugar, eggs, soy, gluten, and dairy—can promote the growth of unhealthy bacteria and contribute to leaky gut, in which undigested food escapes from the damaged intestinal wall and triggers system-wide inflammation. Conversely, not eating enough of the foods required to nourish the microbiome can also lead to gastrointestinal disorders.


      We test patients for bacterial overgrowth in the microbiome. Then, we treat the findings accordingly with diet, targeted herbs, and other supplements. In addition, we use autonomic response testing to understand how the body responds to biochemical and energetic signatures, which allows us to detect yeast and parasites that are frequently missed in stool tests.


      At Kellman Wellness Center, we blend art and science by examining all of the body’s systems and how they interact, including the gut, the brain, and inflammatory markers. By looking at their effects on other body systems and on biomarkers, we can see the downstream effects that are often missed by conventional testing. An alternative treatment to the traditional GI doctor in NYC.

      We look deeper to diagnose each person as an individual, instead of relying on routine tests that identify conditions based on values determined by the population range. We get to know every patient; we recognize that the longer a problem persists, the less likely that a blood test will reveal it.


      We take a functional medicine approach to gut healing that starts with the four Rs:

      1. Remove unhealthy bacteria and foods that unbalance the microbiome
      2. Replace the digestive enzymes needed for optimal digestion
      3. Reinoculate with probiotics (intestinal bacteria) and prebiotics (foods and supplements that nourish and sustain this bacteria)
      4. Repair the lining of the intestinal walls, which have likely become permeable and release partially digested food into the bloodstream

      Patients maintain their digestive health by avoiding foods that stress the microbiome and choosing healing foods that feed the healthy bacteria in the microbiome.

      The following supplements can also be used to restore and maintain gut health:

      • Butyrate
      • Glutamine
      • Quercetin
      • Zinc


      Please call our office at (212) 717-1118 or email us at [email protected].


      Kellman Wellness Center
      7 West 45th Street, Suite 301
      New York, NY 10036
      Phone: (212) 717-1118
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      If you have any questions about pricing or insurance, please call us directly at (212) 717-1118 and our staff will be glad to assist you. For all other requests, please call or fill out the form below.