Summary

Dr. Dennis Zai is a gastroenterologist and internal medicine specialist with over five decades of medical practice. He earned his medical degree from the University of Illinois at Chicago College of Medicine and completed his residency training at Illinois Masonic Medical Center. With 53 years of clinical experience, Dr. Zai brings extensive knowledge to the diagnosis and treatment of digestive system disorders and comprehensive internal medicine care.

Dr. Zai practices at multiple locations throughout the East Bay, including Walnut Creek and Antioch. He is affiliated with Sutter Delta Medical Center and sees patients at Walnut Creek Medical Center and Bass Medical Group. His clinical expertise includes managing complex spinal conditions such as spondylolisthesis and performing diagnostic spinal X-rays when needed for patient care. Patients have given him an average rating of 3.7 on Vitals.

AI-generated from data on this provider profile.

Quick Facts

  • 3.7
  • 53 years of experience
  • Illinois Masonic Medical Center
  • 1 written review
  • 2 specialties
  • 11 areas of expertise
  • 2 board certifications
  • 1 hospital affiliation
  • 3 office locations
  • Male

Office Locations

Dr. Dennis Y H Zai has 3 locations

Walnut Creek Medical Center

1601 Ygnacio Valley RdWalnut Creek, CA 94598

Bass Medical Group

3903 Lone Tree Way Ste 205Antioch, CA 94509

Sutter Delta Medical Center

3901 Lone Tree WayAntioch, CA 94509

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Dr. Dennis Y H Zai, MDTheresa Obonyano, APRNBhavana Akotia, PA-CDr. Amanda Cheung
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients
3.7 
53 Years of Experience 16 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available No Virtual Visit Option
Speaks English Speaks English Speaks Chinese, Spanish
Walnut Creek , CASACRAMENTO , CATempe , AZEmeryville , CA
Med School: University Of Illinois At Chicago College Of Medicine Med School: The University of Texas Health Science Center at Houston Med School: Charles R Drew University Med School: University Of South Carolina School Of Medicine Columbia
Current Profile
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Insurance Plans Accepted by Dr. Dennis Y H Zai

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Medical Specialties

Dr. Dennis Y H Zai has the following 2 specialties

Specialty Expertise

Dr. Dennis Y H Zai has the following 11 areas of expertise

  • Abdominal Pain
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Acid Reflux Disease (GERD)
  • Celiac Disease
  • Colonoscopy
  • Constipation
  • Hemorrhoids
  • Hepatitis C
  • Internal Medicine
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Certifications, License, & Education

53 Years Experience

EDUCATION & TRAINING

Residency

Illinois Masonic Medical Center

Medical School

University Of Illinois At Chicago College Of MedicineGraduated in 1973

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Frequently Asked Questions

How can I make an appointment with Dr. Dennis Zai?
You can find contact information for Dr. Dennis Zai here on Vitals.
Is Dr. Dennis Zai accepting new patients?
Dr. Dennis Zai has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
Where is Dr. Dennis Zai's office located?
Dr. Dennis Zai's office is located at 1601 Ygnacio Valley Rd, Walnut Creek, CA, 94598.
Does Dr. Dennis Zai accept my insurance?
You can see the insurance plans that Dr. Dennis Zai accepts on their Vitals profile.
Which hospitals is Dr. Dennis Zai affiliated with?
Dr. Dennis Zai is affiliated with Sutter Delta Medical Center.

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