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

Dr. Walter Mathis, PHARMD

Pharmacist in Ontario, OR · enumerated 2011.

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

National Provider Identifier

1003190315

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Registry record

Entity type Individual (Type 1)
Name Dr. Walter Mathis
Credential PHARMD
Sex Male
Practice address Ontario, OR, 97914
Phone (541) 889-6288
Fax (541) 889-5675
Enumeration date Oct 5, 2011
Last updated in NPPES Oct 5, 2011

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

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License RPH-0012637 (OR) Primary
183500000X Pharmacist Pharmacy Service Providers · License P6524 (ID) Secondary
183500000X Pharmacist Pharmacy Service Providers · License 5302 (MT) Secondary
PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD credential

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 Walter Mathis practice?
The practice location on file with NPPES is in Ontario, OR. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Walter Mathis?
The National Provider Identifier (NPI) for Walter Mathis is 1003190315, 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 2011-10-05.