Josefino Calibo Diaz
NPI 1891723599ActiveIndividual· Internal Medicine· Duluth, MN
Internal Medicine in Duluth, Minnesota, trained at Saint Louis University School of Medicine (class of 1983). Their prescriptions cost Medicare Part D more than their services did: $378,234 for 4,398 claims, against $26,206 paid for services in 2024.
Overview
| NPI | 1891723599 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Jun 29, 2006 |
| Last updated in NPPES | Jun 22, 2020 |
| Certified by provider | Jun 22, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 44952 | MN |
| Internal Medicine, Geriatric Medicine | 207RG0300X | 44952 | MN |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (MN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 158 |
|---|---|
| Services billed | 311 across 9 procedure codes |
| Paid by Medicare | $26,206 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,398 · 8,943 30-day fills |
|---|---|
| Patients | 446 |
| Total drug cost | $378,234 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | Saint Louis University School of Medicine |
|---|---|
| Graduation year | 1983 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Geriatric Medicine |
Medical group
- Polinsky Medical Rehabilitation CenterDuluth, MN · 382 clinicians
Hospital affiliation
- Essentia Health DuluthDuluth, MN
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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