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

Dennis Zai, MD, Inc

Organization Gastroenterology Physician · NPI 1578659561

Dennis Zai, MD, Inc is a Gastroenterology Physician in Antioch, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

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Practice location Address checks out

3903 Lone Tree Way Ste 205
Antioch, CA 94509-6249
Phone: (925) 784-8710
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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 number1578659561
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Dennis Zai — President · (925) 754-8710
NPI enumeratedOctober 5, 2006
Last updated in NPPESFebruary 13, 2015
Mailing address3903 Lone Tree Way, Suite 205, Antioch, CA 94509-6249

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