Alwin A. Diaz, N.P.
NPI 1245610658ActiveIndividual· Nurse Practitioner· Kenosha, WI
Nurse Practitioner (N.P.) with Horizon Healthcare, Inc, practicing in Kenosha, Wisconsin. Their prescriptions cost Medicare Part D more than their services did: $651,098 for 3,754 claims, against $19,728 paid for services in 2024. Almatica Pharma LLC reported $32.73 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1245610658 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | N.P. |
| Sole proprietor | No |
| NPI issued | Jun 2, 2015 |
| Last updated in NPPES | Jan 7, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 6367-33 | WI |
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 (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 45 |
|---|---|
| Services billed | 528 across 7 procedure codes |
| Paid by Medicare | $19,728 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,754 · 4,342 30-day fills |
|---|---|
| Patients | 141 |
| Total drug cost | $651,098 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Horizon Healthcare, IncMilwaukee, WI · 15 clinicians
Industry payments (Open Payments)
- 2025$32.73 · 2 payments from 1 company
- 2024$14.34 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Almatica Pharma LLC | $32.73 | 2 |
What the 2025 payments were for
- Food and Beverage$32.73 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 74 nurse practitioners in Kenosha · All nurse practitioners in Wisconsin