NPI Portal NPI Lookup & Verification

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

Dr. Richard Otis Buck, MD

Allergy & Immunology Physician in Eugene, OR · enumerated 2005 · practices at Gregory F. Koors.

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

National Provider Identifier

1730166828

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Registry record

Entity type Individual (Type 1)
Name Dr. Richard Otis Buck
Credential MD
Sex Male
Practice address Eugene, OR, 97405
Phone (541) 683-0730
Fax (541) 683-4411
Enumeration date Dec 29, 2005
Last updated in NPPES May 2, 2008

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

Taxonomy & licenses

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License MD11569 (OR) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
030005151 Other OR RAILROAD MEDICARE
041764 Medicaid OR -
831390001 Other - BLUE CROSS
C92307 Other - PROVIDENCE

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 Richard Buck?
The National Provider Identifier (NPI) for Richard Buck is 1730166828, a Type 1 (individual) record in the CMS NPPES registry.
Where does Richard Buck practice?
The practice location on file with NPPES is in Eugene, OR. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-05-02.