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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mr. Mark Vincent Mattes, CADC I

Case Manager/Care Coordinator in Carmichael, CA · enumerated 2014.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1659784288

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Registry record

Entity type Individual (Type 1)
Name Mr. Mark Vincent Mattes
Credential CADC I
Sex Male
Practice address Carmichael, CA, 95608
Phone (916) 335-9745
Enumeration date Jun 11, 2014
Last updated in NPPES Jun 11, 2014

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

171M00000X Case Manager/Care Coordinator Other Service Providers Primary

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What is the NPI number for Mark Mattes?
The National Provider Identifier (NPI) for Mark Mattes is 1659784288, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mark Mattes practice?
The practice location on file with NPPES is in Carmichael, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-06-11.