Mark Zacharjasz, M.D.
NPI 1346621059ActiveIndividual· Family Medicine· Oskaloosa, IA
Family Medicine (M.D.) in Oskaloosa, Iowa, trained at Saint Louis University School of Medicine (class of 2015). Their prescriptions cost Medicare Part D more than their services did: $1,356,698 for 15,711 claims, against $22,662 paid for services in 2024. Boehringer Ingelheim Pharmaceuticals, Inc. reported $18.85 in payments in 2025, mostly education.
Overview
| NPI | 1346621059 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jun 18, 2015 |
| Last updated in NPPES | Dec 28, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 45154 | IA |
| Family Medicine | 207Q00000X | 2015019270 | MO |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Family Practice (IA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 50 |
|---|---|
| Services billed | 583 across 15 procedure codes |
| Paid by Medicare | $22,662 |
Part D prescriptions in 2024
| Prescriptions (claims) | 15,711 · 28,692 30-day fills |
|---|---|
| Patients | 615 |
| Total drug cost | $1,356,698 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | Saint Louis University School of Medicine |
|---|---|
| Graduation year | 2015 |
| Medicare specialty | Family Practice |
Medical group
- Mahaska County HospitalBrooklyn, NY · 128 clinicians
Hospital affiliation
- Mahaska Health PartnershipOskaloosa, IA
Other facilities
- Elara CaringHome health agency · Chariton, IA
- Elara CaringHome health agency · Centerville, IA
- Unitypoint at HomeHome health agency · Urbandale, IA
- Mahaska Health Partnership Hospice ServicesHospice · Oskaloosa, IA
Industry payments (Open Payments)
- 2025$18.85 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boehringer Ingelheim Pharmaceuticals, Inc. | $18.85 | 1 |
What the 2025 payments were for
- Education$18.85 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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