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

Matthew Willis

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1104275270

Matthew Willis is an Addiction (Substance Use Disorder) Counselor in Grass Valley, California. Licensed in California. Registered with an NPI since 2016.

Licensed in
CA
In the registry since
2016

Practice location Address checks out

180 Sierra College Dr
Grass Valley, CA 95945-5768
Phone: (530) 271-1140
Fax: (530) 271-7036
Show map & directions

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

Specialties & licences

Addiction (Substance Use Disorder) Counselor (primary) Taxonomy 101YA0400X · Licence R1236930816 (CA)

Record details

NPI number1104275270
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedJune 8, 2016
Last updated in NPPESMarch 8, 2017
Mailing address180 Sierra College Dr, Grass Valley, CA 95945-5768

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