Dr. Dennis Zai MD Gastroenterologist

Dr. Dennis Zai is a gastroenterologist in Antioch, California. He is affiliated with multiple hospitals in the area, including John Muir Medical Center, Walnut Creek and Sutter Delta Medical Center. He received his medical degree from University of Illinois College of Medicine and has been in practice for 36 years. He is one of 31 doctors at John Muir Medical Center, Walnut Creek and one of 4 at Sutter Delta Medical Center who specialize in Gastroenterology.

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Office Location

See Contact Information

Specialty & Clinical Interests

Gastroenterologist: General Gastroenterology

Hospital Affiliation

John Muir Medical Center, Walnut Creek
Ranked #30 in Gastroenterology & GI Surgery

Sutter Delta Medical Center

Education & Medical Training

University of Illinois College of Medicine at Chicago
Residency, Internal Medicine, 1973 - 1974

Edward Hines Jr VA Hospital
Residency, Internal Medicine, 1976 - 1977

Advocate Illinois Masonic Medical Center
Fellowship, Gastroenterology, 1978 - 1980

University of Illinois College of Medicine
Class of 1973

Certifications & Licensure

American Board of Internal Medicine
Certified in Gastroenterology

American Board of Internal Medicine
Certified in Internal Medicine

CA State Medical License
Active through 2013

Insurances Accepted

  • Aetna Choice POS II
  • Aetna HMO
  • BCBS Blue Card PPO
  • BCBS California CaliforniaCare HMO
  • BCBS California PowerSelect HMO
  • BCBS California PPO
  • BCBS Illinois PPO
  • BCBS Tennessee Network 5
  • Blue Shield CA Local Access Plus HMO
  • Blue Shield California HMO
  • Blue Shield California PPO
  • CIGNA HMO
  • CIGNA Open Access
  • CIGNA PPO
  • Coventry Health Care PPO Platinum
  • Coventry Missouri - HMO/POS
  • First Health PPO
  • Great West PPO
  • Health Alliance PPO
  • Health Net California Large Group PPO
  • HealthLink PPO
  • Humana ChoiceCare Network PPO
  • Humana/ChoiceCare+ Network PPO
  • Multiplan PHCS PPO
  • Multiplan PPO
  • Pacificare HMO
  • United Healthcare - Direct Choice Plus POS
  • United Healthcare - Direct Options PPO
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