Graham Warren Mason, M.D.
NPI 1952978116ActiveIndividual· Hospitalist· Sioux City, IA
Hospitalist (M.D.) with Sioux City Hospitalist Group, LLC, practicing in Sioux City, Iowa. Their prescriptions cost Medicare Part D more than their services did: $21,650 for 279 claims, against $11,786 paid for services in 2024. Lists St Lukes Regional Medical Center as a hospital affiliation.
Overview
| NPI | 1952978116 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 7, 2021 |
| Last updated in NPPES | Jul 30, 2024 |
| Certified by provider | Jul 30, 2024 |
| Reactivated | Sep 19, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Hospitalist Primary | 208M00000X | MD-53165 | 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 - Hospitalist (IA); Practitioner - Hospitalist (TN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 70 |
|---|---|
| Services billed | 187 across 7 procedure codes |
| Paid by Medicare | $11,786 |
Part D prescriptions in 2024
| Prescriptions (claims) | 279 · 473 30-day fills |
|---|---|
| Patients | 47 |
| Total drug cost | $21,650 |
| Generic share | 84% of claims |
Education and affiliations
| Graduation year | 2021 |
|---|---|
| Medicare specialty | Hospitalist |
Medical group
- Sioux City Hospitalist Group, LLCSioux City, IA · 17 clinicians
Hospital affiliation
- St Lukes Regional Medical CenterSioux City, IA
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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