Zachery C. Mahler, MD
NPI 1831750785ActiveIndividual· Family Medicine· Gallatin, MO
Opted out of Medicare from November 2025 to November 2027. Family Medicine (MD) in Gallatin, Missouri, licensed in NE, with an NPI issued in June 2019. Their prescriptions cost Medicare Part D more than their services did: $81,014 for 1,404 claims, against $2,975 paid for services in 2024. Abbvie Inc. was the largest of 6 companies reporting payments in 2025, $128.31 in all, mostly food and beverage.
Overview
| NPI | 1831750785 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 21, 2019 |
| Last updated in NPPES | Jan 27, 2026 |
| Certified by provider | Jan 27, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | TEP8613 | NE |
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 |
|---|---|
| Opt-out | Opted out Nov 14, 2025 – Nov 14, 2027 |
| Can order and refer | Yes |
| Accepts assignment | Yes (participating) |
During an opt-out period the provider sees Medicare patients only under private contracts, and Medicare does not pay claims for their services.
Medicare services in 2024
| Medicare patients | 41 |
|---|---|
| Services billed | 68 across 4 procedure codes |
| Paid by Medicare | $2,975 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,404 · 2,510 30-day fills |
|---|---|
| Patients | 205 |
| Total drug cost | $81,014 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 2019 |
|---|---|
| Medicare specialty | Family Practice |
Industry payments (Open Payments)
- 2025$128.31 · 8 payments from 6 companies
- 2024$629.07 · 38 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $47.86 | 3 |
| Novo Nordisk Inc | $19.15 | 1 |
| Astrazeneca Pharmaceuticals LP | $15.63 | 1 |
| Novartis Pharmaceuticals Corporation | $15.55 | 1 |
| Pfizer Inc. | $15.40 | 1 |
What the 2025 payments were for
- Food and Beverage$128.31 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other family medicine physicians in Gallatin
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