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

Gary John Dillahunty

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1659564623

Gary John Dillahunty is an Addiction (Substance Use Disorder) Counselor in Vallejo, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2007

Practice location Address checks out

419 Pennsylvania St
Vallejo, CA 94590-6933
Phone: (707) 643-2715
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Addiction (Substance Use Disorder) Counselor (primary) Taxonomy 101YA0400X · Licence 101YA0400X (CA)

Record details

NPI number1659564623
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedAugust 23, 2007
Last updated in NPPESAugust 23, 2007
Mailing address121 Yorkshire Ct, Apt.C, Vallejo, CA 94591-6767

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