Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Ronald Ray Guiley, O.D., M.P.H.
Optometrist in Bend, OR · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1619913944
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Dr. Ronald Ray Guiley
Credential O.D., M.P.H.
Sex Male
Practice address 63455 N Hwy 97 Ste 75, Bend, OR, 97703
Phone (541) 388-7906
Fax (541) 388-8190
Enumeration date Jun 22, 2006
Last updated in NPPES Feb 17, 2016
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD 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.
Frequently asked questions
What specialty is Ronald Guiley?
Ronald Guiley is registered in NPPES with the primary taxonomy of Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-02-17.