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

Mr. Gary Harnois, DDS

Individual provider Dentist · NPI 1558557835

Mr. Gary Harnois, DDS is a Dentist in Oakland, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2007
What do these letters mean?
DDS — Doctor of Dental Surgery
A dentist. DDS and DMD are the same qualification — universities choose which title to award.

See every abbreviation used in this directory →

Practice location Address checks out

650 International Blvd Ste A
Oakland, CA 94606-2986
Phone: (510) 836-4755
Fax: (510) 836-4715
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Dentist (primary) Taxonomy 122300000X · Licence D21893 (CA)

Record details

NPI number1558557835
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorYes
NPI enumeratedSeptember 19, 2007
Last updated in NPPESSeptember 19, 2007

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