Marshfield Clinic
Marshfield Clinic is a healthcare organization registered as Federally Qualified Health Center (FQHC) in Marshfield, WI, holding Type 2 (organization) NPI 1265763809 since 2010. The authorized official on file is David Simenstad, Medical Director Reimbursement.
✓ Active NPI ✓ Valid NPI checksum Organization subpart
| NPI | 1265763809 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Marshfield Clinic |
| Other name | <Unavail> |
| Parent organization | Marshfield Clinic |
| Practice address | 1000 N. OAK AVE., Marshfield, WI, 54449 |
| Phone | 7152218842 |
| Enumeration date | 2010-01-21 |
| Last updated in NPPES | 2010-03-08 |
Authorized official
| Name | David Simenstad |
|---|---|
| Title | Medical Director Reimbursement |
| Phone | 7153875511 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 332B00000X | Durable Medical Equipment & Medical Supplies | Secondary | 8962 | WI |
| 261QF0400X | Federally Qualified Health Center (FQHC) | Primary | 8962 | WI |
Copy-ready billing details
Provider: Marshfield Clinic NPI: 1265763809 Taxonomy: 261QF0400X (Federally Qualified Health Center (FQHC)) Address: 1000 N. OAK AVE., Marshfield, WI, 54449
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1518963347 | Ivan Maldonado | Individual | Trauma Surgery Physician | Marshfield, WI |
| 1932106689 | Milan Pastuovic | Individual | Oral and Maxillofacial Surgery (Dentist) | Marshfield, WI |
| 1073510731 | John Cordova | Individual | Critical Care Medicine (Internal Medicine) Physician | Marshfield, WI |
| 1295732923 | Michael Rudolph | Individual | Anesthesiology Physician | Marshfield, WI |
| 1326032509 | Jason Duelge | Individual | Radiation Oncology Physician | Marshfield, WI |
| 1871587584 | Brett Carmichael | Individual | Diagnostic Radiology Physician | Marshfield, WI |
| 1447245816 | Corey Massey | Individual | Emergency Medicine Physician | Marshfield, WI |
| 1861480055 | Frederick Gehrmann | Individual | Anesthesiology Physician | Marshfield, WI |
Verify this record
Cross-check NPI 1265763809 against the authoritative CMS record: view Marshfield Clinic 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
How current is this record?
Where is Marshfield Clinic located?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2010-03-08.