Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. David Christensen, OD
Optometrist in Marion, IA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1891775276
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Registry record
Entity type Individual (Type 1)
Name Dr. David Christensen
Credential OD
Sex Male
Practice address 1065 East Post Rd, Marion, IA, 52302
Phone (319) 377-2222
Fax (319) 377-2967
Enumeration date Jan 20, 2006
Last updated in NPPES Jun 22, 2010
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 |
|---|---|---|---|
| 21637 | Other | IA | BC/BS |
| 28986 | Other | IA | BC/BS |
| 410043671 | Other | - | RR MEDICARE |
| 0461921 | Medicaid | IA | - |
| 7236139 | Other | - | AETNA |
| 21634 | Other | IA | BC/BS |
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 is the NPI number for David Christensen?
The National Provider Identifier (NPI) for David Christensen is 1891775276, a Type 1 (individual) record in the CMS NPPES registry.
Where does David Christensen practice?
The practice location on file with NPPES is in Marion, IA. Providers can have multiple locations; NPPES lists the primary practice address.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-06-22.