Alfredo Diaz, MD
NPI 1902911159ActiveIndividual· Internal Medicine· Two Rivers, WI
Internal Medicine (MD) in Two Rivers, Wisconsin, trained at University of Nebraska College of Medicine (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $1,788,409 for 21,479 claims, against $148,238 paid for services in 2024.
Overview
| NPI | 1902911159 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 20, 2006 |
| Last updated in NPPES | Dec 1, 2021 |
| Certified by provider | Dec 1, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 39841 | WI |
| Internal Medicine | 207R00000X | 3310 | NE |
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 - Internal Medicine (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 563 |
|---|---|
| Services billed | 8,394 across 49 procedure codes |
| Paid by Medicare | $148,238 |
Part D prescriptions in 2024
| Prescriptions (claims) | 21,479 · 48,030 30-day fills |
|---|---|
| Patients | 1,219 |
| Total drug cost | $1,788,409 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | University of Nebraska College of Medicine |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Internal Medicine |
Medical groups
- Aurora Medical Group, Inc.Milwaukee, WI · 3,813 clinicians
- Aamg Reach PLLCKenosha, WI · 51 clinicians
Hospital affiliations
- Aurora Baycare Medical CtrGreen Bay, WI
- Aurora Medical Center Sheboygan CountySheboygan, WI
- Aurora Medical Ctr Manitowoc CountyTwo Rivers, WI
- Holy Family MemorialManitowoc, WI
Other facilities
- Aurora at HomeHome health agency · Green Bay, WI
- Aurora at HomeHospice · Green Bay, WI
- Complete Care at Manitowoc LLCNursing home · Manitowoc, WI
- Shady Lane Nursing Care CenterNursing home · Manitowoc, WI
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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