Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. John Robert Mack, MA, C-QMHP

Q: What is the NPI number for John Mack?

The National Provider Identifier (NPI) for John Mack is 1891875993, a Type 1 (individual) record in the CMS NPPES registry.

Mental Health Counselor in Grants Pass, OR · enumerated 2006.

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

National Provider Identifier

1891875993

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Registry record

Entity type Individual (Type 1)

Name Mr. John Robert Mack

Credential MA, C-QMHP

Sex Male

Practice address 1215 Sw G St, Grants Pass, OR, 97526

Phone (541) 476-2373

Enumeration date Oct 16, 2006

Last updated in NPPES Jun 18, 2020

Taxonomy & licenses

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

Other identifiers

Identifier	Type	State	Issuer
1891875993	Medicaid	OR	-

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does John Mack practice?

The practice location on file with NPPES is in Grants Pass, OR. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for John Mack?

The National Provider Identifier (NPI) for John Mack is 1891875993, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-06-18.