Zachary Michael Holliday, M.D.
NPI 1306108790ActiveIndividual· Internal Medicine, Critical Care Medicine· Columbia, MO
Internal Medicine, Critical Care Medicine (M.D.) in Columbia, Missouri, trained at University of Missouri, Columbia School of Medicine (class of 2012). Their prescriptions cost Medicare Part D more than their services did: $3,126,418 for 525 claims, against $41,309 paid for services in 2024. La Jolla Pharmaceutical Company was the largest of 3 companies reporting payments in 2025, $53.98 in all, mostly food and beverage.
Overview
| NPI | 1306108790 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 12, 2012 |
| Last updated in NPPES | Apr 18, 2023 |
| Certified by provider | Apr 18, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Critical Care Medicine Primary | 207RC0200X | 2015018623 | MO |
| Internal Medicine, Pulmonary Disease | 207RP1001X | 2015018623 | MO |
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 - Critical Care (Intensivists) (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 220 |
|---|---|
| Services billed | 566 across 39 procedure codes |
| Paid by Medicare | $41,309 |
Part D prescriptions in 2024
| Prescriptions (claims) | 525 · 583 30-day fills |
|---|---|
| Patients | 43 |
| Total drug cost | $3,126,418 |
Education and affiliations
| Medical school | University of Missouri, Columbia School of Medicine |
|---|---|
| Graduation year | 2012 |
| Medicare specialty | Critical Care (Intensivists) |
| Secondary specialties | Pulmonary Disease |
Medical group
- The Curators of the University of MissouriColumbia, MO · 1,131 clinicians
Hospital affiliation
- University of Missouri Health CareColumbia, MO
Industry payments (Open Payments)
- 2025$53.98 · 3 payments from 3 companies
- 2024$55.45 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| La Jolla Pharmaceutical Company | $20.61 | 1 |
| Aimmune Therapeutics, Inc. | $19.25 | 1 |
| Philips North America LLC | $14.12 | 1 |
What the 2025 payments were for
- Food and Beverage$53.98 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 23 critical care physicians in Columbia · All critical care physicians in Missouri