Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mark M Zimmer, OD
Optometrist in Independence, IA · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1689670598
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Registry record
Entity type Individual (Type 1)
Name Dr. Mark M Zimmer
Credential OD
Sex Male
Practice address 216 2nd St Ne, Independence, IA, 50644
Phone (319) 334-3631
Fax (319) 334-3631
Enumeration date Jun 24, 2005
Last updated in NPPES Jan 23, 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 |
|---|---|---|---|
| 0419432 | Medicaid | IA | - |
| P00000678 | Other | IA | RAILROAD MEDICARE |
| 06297 | Other | IA | BLUE CROSS & BLUE SHIELD |
| 08106 | Other | IA | BCBS FOR OELWEIN |
| 43738 | Other | IA | BCBS |
| 0419424 | Medicaid | IA | - |
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
How do I verify Mark Zimmer's NPI record?
Cross-check NPI 1689670598 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1689670598 active?
Yes, as of the latest NPPES snapshot, NPI 1689670598 is active (record last updated 2008-01-23).
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-01-23.