Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Russell Hosaka, O.D.
Optometrist in Torrance, CA · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1447245188
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Registry record
Entity type Individual (Type 1)
Name Dr. Russell Hosaka
Credential O.D.
Sex Male
Practice address 22809 Hawthorne Blvd, Torrance, CA, 90505
Phone (310) 373-9993
Fax (310) 373-4505
Enumeration date Sep 19, 2005
Last updated in NPPES Sep 11, 2025
Taxonomy & licenses
152WC0802X Corneal and Contact Management Optometrist Eye and Vision Services Providers · License OPT7226TLG (CA) Secondary
152WC0802X Corneal and Contact Management Optometrist Eye and Vision Services Providers · License OPT7226T (CA) Secondary
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 |
|---|---|---|---|
| 45536 | Other | CA | SAFEGUARD |
| 3103739993 | Other | CA | VSP |
| 03164 | Other | AR | EYE CARE NETWORK |
| CA7226 | Other | CA | EYEMED |
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 Russell Hosaka?
Russell Hosaka 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 → Kevin Hashimoto Optometrist · Torrance, CA NPI 1982763389 Russell Hosaka Od Inc A Professional Corporation Optometrist · Torrance, CA NPI 1891826384 Quang Chung Optometrist · Torrance, CA NPI 1295933588 Anna Parfenova Optometrist · Torrance, CA NPI 1629590401 Anna Parfenova Od Inc Optometrist · Torrance, CA NPI 1871250571
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.