The Duluth Clinic, Ltd
The Duluth Clinic, Ltd is a healthcare organization registered as End-Stage Renal Disease (ESRD) Treatment Clinic/Center in Superior, WI, holding Type 2 (organization) NPI 1083889554 since 2008. The authorized official on file is John Smylie, Cao.
✓ Active NPI ✓ Valid NPI checksum Organization subpart
| NPI | 1083889554 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | The Duluth Clinic, Ltd |
| Other name | <Unavail> |
| Parent organization | St. Mary'S Duluth Clinic Health System |
| Practice address | 3500 TOWER AVE, Superior, WI, 54880 |
| Phone | 7153952199 |
| Enumeration date | 2008-04-25 |
| Last updated in NPPES | 2010-04-09 |
Authorized official
| Name | John Smylie |
|---|---|
| Title | Cao |
| Phone | 2187862656 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207RN0300X | Nephrology Physician | Secondary | — | — |
| 261QE0700X | End-Stage Renal Disease (ESRD) Treatment Clinic/Center | Primary | — | — |
Copy-ready billing details
Provider: The Duluth Clinic, Ltd NPI: 1083889554 Taxonomy: 261QE0700X (End-Stage Renal Disease (ESRD) Treatment Clinic/Center) Address: 3500 TOWER AVE, Superior, WI, 54880
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1801872080 | Vicki Brady | Individual | Family Nurse Practitioner | Superior, WI |
| 1245203124 | Robert Okoro | Individual | Emergency Medicine Physician | Superior, WI |
| 1255306858 | Daniel Cabot | Individual | Family Medicine Physician | Superior, WI |
| 1821059536 | Julie Isaksen | Individual | Clinical Social Worker | Superior, WI |
| 1427008259 | Sheri Bergeron | Individual | Hospitalist Physician | Superior, WI |
| 1346295540 | Darrell Barnack | Individual | Social Worker | Superior, WI |
| 1942240577 | George Holliday | Individual | Internal Medicine Physician | Superior, WI |
| 1770525347 | Todd Hnatko | Individual | Optometrist | Superior, WI |
Verify this record
Cross-check NPI 1083889554 against the authoritative CMS record: view The Duluth Clinic, Ltd 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
Where is The Duluth Clinic, Ltd located?
How current is this record?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2010-04-09.