Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Matthew Sassman

Mental Health Counselor in Ben Lomond, CA · enumerated 2007.

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

National Provider Identifier

1154547321

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Registry record

Entity type Individual (Type 1)

Name Mr. Matthew Sassman

Sex Male

Practice address 155 Willowbrook Dr, Ben Lomond, CA, 95005

Phone (831) 336-5199

Enumeration date Apr 17, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers Primary

Other identifiers

Identifier	Type	State	Issuer
D5340265	Other	CA	DRIVER'S LICENSE

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

Where does Matthew Sassman practice?

The practice location on file with NPPES is in Ben Lomond, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Matthew Sassman?

The National Provider Identifier (NPI) for Matthew Sassman is 1154547321, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.