Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Christopher Dale Martin II, O.D.
Optometrist in Chicago, IL · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1881618445
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Registry record
Entity type Individual (Type 1)
Name Christopher Dale Martin II
Credential O.D.
Sex Male
Practice address 4200 S Ashland Ave Unit 255, Chicago, IL, 60609
Phone (708) 477-1986
Enumeration date Jul 27, 2006
Last updated in NPPES Oct 14, 2025
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 |
|---|---|---|---|
| 502720039 | Other | IL | MEDICARE PTAN |
| 046009427 | Medicaid | IL | - |
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 1881618445 active?
Yes, as of the latest NPPES snapshot, NPI 1881618445 is active (record last updated 2025-10-14).
How do I verify Christopher Martin's NPI record?
Cross-check NPI 1881618445 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-14.