Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Christian William Ertl, MD
Surgery Physician in Kalamazoo, MI · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1881691178
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Registry record
Entity type Individual (Type 1)
Name Dr. Christian William Ertl
Credential MD
Sex Male
Practice address 1000 Oakland Dr, Kalamazoo, MI, 49008
Phone (269) 337-6260
Fax (269) 337-6530
Enumeration date Jul 1, 2005
Last updated in NPPES Feb 15, 2012
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1881691178 | Medicaid | MI | - |
| 2386462 | Other | - | AETNA |
| 149696 | Other | - | PREFERRED ONE HUSKY |
| 010036846CT01 | Other | - | BC/BS |
| 1417961137 | Other | MI | BCBSM - BRONSON |
| 03684601 | Other | - | CONNECTICARE |
| 00136846501 | Other | - | BLUE CARE FAMILY PLAN |
| 0V7800 | Other | - | HEALTHNET |
| P984485 | Other | - | OXFORD |
| 020001475 | Other | - | MEDICARE |
| 061596829 | Other | - | CIGNA HEALTH PLAN |
| 1740406 | Other | - | UNITED HEALTHCARE |
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 Christian Ertl's NPI record?
Cross-check NPI 1881691178 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1881691178 active?
Yes, as of the latest NPPES snapshot, NPI 1881691178 is active (record last updated 2012-02-15).
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-02-15.