Marilyn Harter, ARNP
NPI 1124401922ActiveIndividual· Nurse Practitioner· Marshalltown, IA
Nurse Practitioner (ARNP) with Mercy Clinics Inc and 2 other groups, practicing in Marshalltown, Iowa. 222 Medicare patients in 2024, $20,150 paid; nearly all of their 503 Part D prescriptions were generic (94%). Insulet Corporation was the largest of 3 companies reporting payments in 2025, $91.26 in all, mostly food and beverage. Lists Knoxville Hospital & Clinics and 1 other hospital as hospital affiliations.
Overview
| NPI | 1124401922 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | ARNP |
| Sole proprietor | No |
| NPI issued | Jun 30, 2015 |
| Last updated in NPPES | Dec 21, 2025 |
| Certified by provider | Dec 21, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | A097804 | IA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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 | 222 |
|---|---|
| Services billed | 548 across 29 procedure codes |
| Paid by Medicare | $20,150 |
Part D prescriptions in 2024
| Prescriptions (claims) | 503 · 509 30-day fills |
|---|---|
| Patients | 323 |
| Total drug cost | $10,916 |
| Generic share | 94% of claims |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical groups
- Mercy Clinics IncClive, IA · 443 clinicians
- Broadlawns Medical CenterDes Moines, IA · 306 clinicians
- Mercyone UrgentcareMason City, IA · 18 clinicians
Hospital affiliations
- Knoxville Hospital & ClinicsKnoxville, IA
- Mercyone Des Moines Medical CenterDes Moines, IA
Industry payments (Open Payments)
- 2025$91.26 · 3 payments from 3 companies
- 2024$83.56 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Insulet Corporation | $45.48 | 1 |
| Stryker Corporation | $27.89 | 1 |
| Otsuka America Pharmaceutical, Inc. | $17.89 | 1 |
What the 2025 payments were for
- Food and Beverage$91.26 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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