Kathryn Ann Haack, ARNP - FNP-C
NPI 1225118078ActiveIndividual· Nurse Practitioner· Sioux City, IA
Nurse Practitioner (ARNP - FNP-C) with Northwest Iowa Hospital Corporation, practicing in Sioux City, Iowa. Their prescriptions cost Medicare Part D more than their services did: $252,831 for 2,770 claims, against $42,980 paid for services in 2024. Boehringer Ingelheim Pharmaceuticals, Inc. was the largest of 7 companies reporting payments in 2025, $124.88 in all, mostly food and beverage. Lists St Lukes Regional Medical Center as a hospital affiliation.
Overview
| NPI | 1225118078 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | ARNP - FNP-C |
| Sole proprietor | No |
| NPI issued | Oct 16, 2006 |
| Last updated in NPPES | Jul 6, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | A055923 | IA |
| Nurse Practitioner | 363L00000X | A-055923 | IA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nurse Practitioner (IA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 667 |
|---|---|
| Services billed | 762 across 5 procedure codes |
| Paid by Medicare | $42,980 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,770 · 4,561 30-day fills |
|---|---|
| Patients | 547 |
| Total drug cost | $252,831 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 1998 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Northwest Iowa Hospital CorporationBellevue, NE · 160 clinicians
Hospital affiliation
- St Lukes Regional Medical CenterSioux City, IA
Industry payments (Open Payments)
- 2025$124.88 · 8 payments from 7 companies
- 2024$77.30 · 4 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boehringer Ingelheim Pharmaceuticals, Inc. | $32.34 | 2 |
| Bridgebio Pharma, Inc. | $20.78 | 1 |
| Itamar Medical Inc | $19.81 | 1 |
| Boston Scientific Corporation | $18.08 | 1 |
| Pfizer Inc. | $15.42 | 1 |
What the 2025 payments were for
- Food and Beverage$124.88 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 41 nurse practitioners in Sioux City · All nurse practitioners in Iowa