Dr. John W Seifert, DO
Dr. John W Seifert is a Anesthesiology Physician provider (Anesthesiology) practicing in Willmar, MN, registered in the NPPES registry with NPI 1205802931 since 2006. The credential DO stands for Doctor of Osteopathic Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1205802931 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. John W Seifert |
| Credential | DO |
| Sex | Male |
| Practice address | 101 WILLMAR AVE SW, Willmar, MN, 56201 |
| Phone | 3202315000 |
| Fax | 3202315067 |
| Enumeration date | 2006-02-23 |
| Last updated in NPPES | 2007-07-08 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207L00000X | Anesthesiology Physician | Primary | 35313 | MN |
DO — Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential
Copy-ready billing details
Provider: John Seifert, DO NPI: 1205802931 Taxonomy: 207L00000X (Anesthesiology Physician) Address: 101 WILLMAR AVE SW, Willmar, MN, 56201
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1922004514 | Gregory Macik | Individual | Optometrist | Willmar, MN |
| 1770580771 | Daniel Schminke | Individual | Family Medicine Physician | Willmar, MN |
| 1063495539 | Irma Cockerill | Individual | Internal Medicine Physician | Willmar, MN |
| 1144204819 | Kerriann Mahon | Individual | Pediatrics Physician | Willmar, MN |
| 1033197876 | Janae Bell | Individual | Internal Medicine Physician | Willmar, MN |
| 1376521021 | Andrew Chang | Individual | Neurology Physician | Willmar, MN |
| 1427036573 | Frederick Hund | Individual | Internal Medicine Physician | Willmar, MN |
| 1770555344 | Nancy Rost | Individual | Pediatrics Physician | Willmar, MN |
Verify this record
Cross-check NPI 1205802931 against the authoritative CMS record: view Dr. John W Seifert on the official NPPES registry .
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. Read the full guide or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.