Mathias M. Stroemel, DO
NPI 1265446660ActiveIndividual· Internal Medicine, Nephrology· Walla Walla, WA
Internal Medicine, Nephrology (DO) in Walla Walla, Washington, trained at Oklahoma State University College of Osteopathic Medicine (class of 1988). Their prescriptions cost Medicare Part D more than their services did: $307,809 for 1,603 claims, against $130,986 paid for services in 2024. Aurinia Pharma U.S., Inc. reported $15.75 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1265446660 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Jul 28, 2006 |
| Last updated in NPPES | Jan 9, 2024 |
| Certified by provider | Nov 28, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | OP1416 | WA |
| Internal Medicine, Nephrology | 207RN0300X | 05-48772 | KS |
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) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 552 |
|---|---|
| Services billed | 1,225 across 21 procedure codes |
| Paid by Medicare | $130,986 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,603 · 3,380 30-day fills |
|---|---|
| Patients | 311 |
| Total drug cost | $307,809 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | Oklahoma State University College of Osteopathic Medicine |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Nephrology |
Hospital affiliations
- Bob Wilson Memorial HospitalUlysses, KS
- Centura St. Catherine-Dodge CityDodge City, KS
- Kearny County HospitalLakin, KS
- Southwest Medical CenterLiberal, KS
- St. Catherine Hospital - Garden CityGarden City, KS
Other facilities
- Davita Garden City Dialysis CenterDialysis facility · Garden City, KS
- Fmc - Garden CityDialysis facility · Garden City, KS
- Renal Care Group - Dodge CityDialysis facility · Dodge City, KS
- Renal Care Group - LiberalDialysis facility · Liberal, KS
Industry payments (Open Payments)
- 2025$15.75 · 1 payment from 1 company
- 2024$227.78 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Aurinia Pharma U.S., Inc. | $15.75 | 1 |
What the 2025 payments were for
- Food and Beverage$15.75 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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