Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Donald Lynn Schwenker, D.C
Chiropractor in Maquoketa, IA · enumerated 2006 · practices at Timber City Chiropractic Inc.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1437120870
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Registry record
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 36003 | Other | IA | BLUE CROSS/BLUE SHIELD |
| 79962 | Other | IA | AWHN/JOHN DEERE |
| 0422477 | Medicaid | IA | - |
| 71-0953075 | Other | IA | WELLMARK SELECT |
| 242107 | Other | IA | MIDLANDS CHOICE |
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.
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Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-09-06.