Tammy O. Wichman, M.D.
NPI 1780788844ActiveIndividual· Internal Medicine, Critical Care Medicine· Omaha, NE
Internal Medicine, Critical Care Medicine (M.D.) in Omaha, Nebraska, trained at Saint Louis University School of Medicine (class of 1996). Their prescriptions cost Medicare Part D more than their services did: $13,399,113 for 1,890 claims, against $55,459 paid for services in 2024. United Therapeutics Corporation reported $40.53 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1780788844 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 11, 2006 |
| Last updated in NPPES | Feb 14, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Critical Care Medicine Primary | 207RC0200X | 22440 | NE |
| Internal Medicine | 207R00000X | 22440 | NE |
| Internal Medicine, Pulmonary Disease | 207RP1001X | 22440 | 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) | Enrolled Practitioner - Critical Care (Intensivists) (NE) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 348 |
|---|---|
| Services billed | 868 across 27 procedure codes |
| Paid by Medicare | $55,459 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,890 · 2,338 30-day fills |
|---|---|
| Patients | 127 |
| Total drug cost | $13,399,113 |
Education and affiliations
| Medical school | Saint Louis University School of Medicine |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Critical Care (Intensivists) |
| Secondary specialties | Pulmonary Disease |
Medical group
- Unmc PhysiciansBellevue, NE · 1,518 clinicians
Hospital affiliations
- Bellevue Medical CenterBellevue, NE
- Bryan Medical CenterLincoln, NE
- The Nebraska Medical CenterOmaha, NE
Industry payments (Open Payments)
- 2025$40.53 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| United Therapeutics Corporation | $40.53 | 1 |
What the 2025 payments were for
- Food and Beverage$40.53 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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