Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Ronald Glenn Seger, O.D.
Optometrist in Mountain View, CA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1417910290
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Dr. Ronald Glenn Seger
Credential O.D.
Sex Male
Practice address 1150 W El Camino Real, Mountain View, CA, 94040
Phone (650) 967-5789
Fax (650) 967-4106
Enumeration date Apr 11, 2006
Last updated in NPPES Jul 8, 2007
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 Seger?
Ronald Seger 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 → Ronald G. Seger and Jenifer E.L. Webb Optometrists Optometrist · Mountain View, CA NPI 1124104773 Jenifer Webb Optometrist · Mountain View, CA NPI 1306045869 Sonia Menchavez Optometrist · Mountain View, CA NPI 1851721500 Carbon Health Medical Group of California PC Multi-Specialty Clinic/Center · Mountain View, CA NPI 1871035048
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.