Mariam Gallagher, DO
NPI 1366825234ActiveIndividual· Family Medicine· Waterloo, IA
Family Medicine (DO) with Covenant Medical Center Inc and 1 other group, practicing in Waterloo, Iowa. Their prescriptions cost Medicare Part D more than their services did: $98,887 for 1,430 claims, against $19,274 paid for services in 2024. Xeris Pharmaceuticals, Inc. was the largest of 2 companies reporting payments in 2025, $32.55 in all, mostly food and beverage. Lists Mercyone Waterloo Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1366825234 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | Yes |
| NPI issued | Jul 9, 2015 |
| Last updated in NPPES | Jun 19, 2025 |
| Certified by provider | Jun 19, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | DO-05933 | IA |
| Family Medicine | 207Q00000X | S6840 | TX |
| Family Medicine | 207Q00000X | 5940 | OK |
| Family Medicine | 207Q00000X | 0097R | OK |
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 - Family Practice (IA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 174 |
|---|---|
| Services billed | 455 across 26 procedure codes |
| Paid by Medicare | $19,274 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,430 · 2,902 30-day fills |
|---|---|
| Patients | 130 |
| Total drug cost | $98,887 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| Medicare specialty | Family Practice |
| Secondary specialties | Emergency Medicine |
Medical groups
- Covenant Medical Center IncWaterloo, IA · 235 clinicians
- Virginia Gay Hospital IncVinton, IA · 19 clinicians
Hospital affiliations
- Mercyone Waterloo Medical CenterWaterloo, IA
- Sartori Memorial Hospital, IncCedar Falls, IA
- Virginia Gay HospitalVinton, IA
Industry payments (Open Payments)
- 2025$32.55 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Xeris Pharmaceuticals, Inc. | $17.60 | 1 |
| Lilly USA, LLC | $14.95 | 1 |
What the 2025 payments were for
- Food and Beverage$32.55 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 102 family medicine physicians in Waterloo · All family medicine physicians in Iowa