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Mike G. Kattah, M.D., Ph.D.

  1. Gastroenterologist

Michael G. Kattah, M.D., Ph.D., is a gastroenterologist at the Mayo Clinic who specializes in inflammatory bowel disease (IBD), including Crohn’s disease (CD), ulcerative colitis (UC), and microscopic colitis. Dr. Kattah has a particular focus on young adults transitioning from pediatric to adult GI care. He partners closely with pharmacists, nurses, and dietitians to create individualized treatment plans targeting long-term health maintenance. His practice also includes multidisciplinary care for patients with immune checkpoint inhibitor (ICI) — induced or CAR-T-associated colitis, coordinating evaluation and treatment with Oncology.

Clinically, he offers comprehensive IBD management — diagnosis, second opinions, endoscopic assessment, therapeutic optimization, and preventive care (bone health, vaccinations, nutrition). He emphasizes shared decision-making, clear communication, and rapid access for disease flares. Board-certified in Gastroenterology, he collaborates with colorectal surgery, dermatology, rheumatology, nutrition, and pharmacy to deliver team-based care. His goal is to help each patient achieve durable remission with the fewest side effects and the best possible quality of life.

  • Inflammatory bowel disease care: Crohn’s disease, ulcerative colitis, and microscopic colitis
  • Transition-of-care for adolescents/young adults moving from pediatric to adult GI
  • Management of cancer-therapy GI side effects, including immune checkpoint inhibitor (ICI) – and CAR-T–induced enteritis and colitis
  • Second opinions for complex or refractory IBD, including prior biologic/small-molecule nonresponse
  • Therapeutic optimization: biologics and small molecules, combination therapy, and therapeutic drug monitoring
  • Endoscopic care: evaluation of disease activity, dysplasia surveillance, and post-operative IBD management
  • Preventive and supportive care in IBD: vaccination planning, bone health, nutrition, and flare action plans
  1. 2016
    Fellowship - Gastroenterology FellowshipUniversity of California, San Francisco
  2. 2010
    MD / PhD - ImmunologyDepartment of Medicine, Stanford University School of Medicine
  3. 2001
    BS - Major Biochemistry, Minor MathematicsGeorgetown University