Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Ona Mae Reiko Shiroyama, O.D.
Optometrist in Ventura, CA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1932142841
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Registry record
Entity type Individual (Type 1)
Name Dr. Ona Mae Reiko Shiroyama
Credential O.D.
Sex Female
Practice address 1280 S Victoria Ave, Suite 100, Ventura, CA, 93003
Phone (805) 650-9922
Fax (805) 650-6656
Enumeration date Jun 14, 2006
Last updated in NPPES Jan 11, 2011
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| SD0068020 | Medicaid | CA | - |
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
Is NPI 1932142841 active?
Yes, as of the latest NPPES snapshot, NPI 1932142841 is active (record last updated 2011-01-11).
How do I verify Ona Mae Shiroyama's NPI record?
Cross-check NPI 1932142841 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → Mark Bozek Optometrist · Ventura, CA NPI 1649249319 Samuel Bern Plastic Surgery Physician · Ventura, CA NPI 1306807862 Laurie Mccall Ophthalmology Physician · Ventura, CA NPI 1003877564 Ventura Optometric Vision Care Inc. Optometrist · Ventura, CA NPI 1619935103 Beverly Januszewski Clinical Psychologist · Ventura, CA NPI 1699708859 Ines Mongulo Clinical Psychologist · Ventura, CA NPI 1538249529 Rosalind Warner Gynecology Physician · Ventura, CA NPI 1912050006 Paul Bohman Oral and Maxillofacial Surgery (Dentist) · Ventura, CA NPI 1336271170
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-01-11.