Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dennis Zai, MD

Individual provider Gastroenterology Physician · NPI 1740253350

Dennis Zai, MD is a Gastroenterology Physician in Antioch, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3903 Lone Tree Way Ste 205
Antioch, CA 94509-6249
Phone: (925) 754-8710
Fax: (925) 754-0765
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence G38299 (CA)

Record details

NPI number1740253350
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedFebruary 13, 2006
Last updated in NPPESMay 16, 2008
Mailing address3903 Lone Tree Way, Suite 205, Antioch, CA 94509-6249

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