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

Matthew Clark

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1538930045

Matthew Clark is an Addiction (Substance Use Disorder) Counselor in Upland, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2024

Practice location Address checks out

239 W 9th St
Upland, CA 91786-5979
Phone: (909) 340-4276
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 R1503700423 (CA)

Record details

NPI number1538930045
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedJanuary 12, 2024
Last updated in NPPESMay 30, 2024
Certification dateMay 30, 2024
Mailing address4764 Dundee Rd, Riverside, CA 92503-2125

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