Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Walter Ray Hardin, D.O.

Family Medicine Physician in Lake Oswego, OR · enumerated 2006.

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

National Provider Identifier

1104841642

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Registry record

Entity type Individual (Type 1)

Name Dr. Walter Ray Hardin

Credential D.O.

Sex Male

Practice address 6 Centerpointe Dr Ste 200, Lake Oswego, OR, 97035

Phone (503) 797-2268

Enumeration date Jul 13, 2006

Last updated in NPPES Dec 19, 2012

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License DO12722 (OR) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
235200	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

What is the NPI number for Walter Hardin?

The National Provider Identifier (NPI) for Walter Hardin is 1104841642, a Type 1 (individual) record in the CMS NPPES registry.

Where does Walter Hardin practice?

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

Other providers at this practice address

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Michael Zimmerman Family Medicine Physician · Lake Oswego, OR NPI 1215037585

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-12-19.