Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Steven J Fronk, O.D.
Optometrist in Jackson, CA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1417927161
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Registry record
Entity type Individual (Type 1)
Name Dr. Steven J Fronk
Credential O.D.
Sex Male
Practice address 817 Court St, Suite 10, Jackson, CA, 95642
Phone (209) 223-2020
Fax (209) 223-2046
Enumeration date Jan 25, 2006
Last updated in NPPES Jan 25, 2008
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 |
|---|---|---|---|
| SD0082300 | 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 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.
What specialty is Steven Fronk?
Steven Fronk 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.
Other providers at this practice address
Browse all → Duane Gibson Optometrist · Jackson, CA NPI 1083609101 Richard Vanbuskirk Low Vision Rehabilitation Optometrist · Jackson, CA NPI 1316917479 Jerry Jolley Optometrist · Jackson, CA NPI 1841261187 David Bruce Dermatology Physician · Jackson, CA NPI 1164466041 Karen Pantazis Pain Medicine Physician · Jackson, CA NPI 1770661423 Sierra Eyecare Associates Optometrist · Jackson, CA NPI 1699854158 David R Bruce Do Inc Dermatopathology Physician · Jackson, CA NPI 1841448297 Karen Pantazis MD Pain Medicine Physician · Jackson, CA NPI 1992094874
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-01-25.