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

Richard A. Zak, MD, Inc

Organization Gastroenterology Physician · NPI 1821316944

Richard A. Zak, MD, Inc is a Gastroenterology Physician in Chico, California. Licensed in California. Registered with an NPI since 2010.

Licensed in
CA
In the registry since
2010
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

251 Cohasset Rd Ste 300
Chico, CA 95926-2241
Phone: (530) 894-8800
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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 G43123 (CA)

Record details

NPI number1821316944
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Lorraine Fingleton — Office Manager · (530) 894-8800
NPI enumeratedMay 13, 2010
Last updated in NPPESJune 28, 2011
Mailing addressPo Box 1096, Mansfield, OH 44901-1096

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