Mark Miller Belz, MD
NPI 1427012061ActiveIndividual· Internal Medicine, Nephrology· Des Moines, IA
Internal Medicine, Nephrology (MD) in Des Moines, Iowa, trained at Washington University School of Medicine (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $397,487 for 2,078 claims, against $203,088 paid for services in 2024. Calliditas Therapeutics US Inc. was the largest of 2 companies reporting payments in 2025, $214.88 in all, mostly food and beverage.
Overview
| NPI | 1427012061 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 12, 2006 |
| Last updated in NPPES | Jan 28, 2025 |
| Certified by provider | Jan 28, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 31519 | 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 - Nephrology (IA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 656 |
|---|---|
| Services billed | 2,959 across 26 procedure codes |
| Paid by Medicare | $203,088 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,078 · 4,476 30-day fills |
|---|---|
| Patients | 342 |
| Total drug cost | $397,487 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | Washington University School of Medicine |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Nephrology |
| Telehealth | Offers telehealth |
Medical groups
- Trinity Regional Medical CenterHumboldt, IA · 167 clinicians
- Iowa Kidney Physicians, P.C.Des Moines, IA · 15 clinicians
Hospital affiliations
- Lucas County Health CenterChariton, IA
- Mercyone Des Moines Medical CenterDes Moines, IA
- Mercyone Newton Medical CenterNewton, IA
- Pella Regional Health CenterPella, IA
- Unitypoint Health - Des Moines Iowa Methodist MediDes Moines, IA
Other facilities
- Davita East Des Moines DialysisDialysis facility · Des Moines, IA
- Davita Pella DialysisDialysis facility · Pella, IA
- Mercy Rehabilitation Hospital, LLCInpatient rehabilitation facility · Clive, IA
Industry payments (Open Payments)
- 2025$214.88 · 5 payments from 2 companies
- 2024$581.99 · 7 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Calliditas Therapeutics US Inc. | $173.90 | 4 |
| Travere Therapeutics, Inc. | $40.98 | 1 |
What the 2025 payments were for
- Food and Beverage$214.88 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 24 nephrologists in Des Moines · All nephrologists in Iowa