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  • Office

    3903 Lone Tree Way
    Suite 205
    Antioch, CA 94509
    Phone+1 925-754-8710
    Fax+1 925-754-0765

Summary

  • Dr. Dennis Zai, MD is a gastroenterologist in Antioch, California. He is currently licensed to practice medicine in California and Illinois. He is affiliated with Sutter Delta Medical Center and John Muir Medical Center, Walnut Creek.

Education & Training

  • University of Illinois College of Medicine at Chicago
    University of Illinois College of Medicine at ChicagoFellowship, Gastroenterology, 1978 - 1980
  • Loyola University Medical Center
    Loyola University Medical CenterResidency, Internal Medicine, 1976 - 1977
  • University of Illinois College of Medicine at Chicago
    University of Illinois College of Medicine at ChicagoInternship, Internal Medicine, 1973 - 1974
  • University of Illinois College of Medicine
    University of Illinois College of MedicineClass of 1973

Certifications & Licensure

  • CA State Medical License
    CA State Medical License 1978 - 2025
  • IL State Medical License
    IL State Medical License 1976 - 1984
  • American Board of Internal Medicine Internal Medicine
  • American Board of Internal Medicine Gastroenterology

Awards, Honors, & Recognition

  • Regional Top Doctor Castle Connolly, 2014