Stephen J. Halliday, M.D., MSCI
NPI 1154612554ActiveIndividual· Internal Medicine, Pulmonary Disease· Madison, WI
Internal Medicine, Pulmonary Disease (M.D., MSCI) in Madison, Wisconsin, trained at University of Texas Medical School at San Antonio (class of 2011). Their prescriptions cost Medicare Part D more than their services did: $397,377 for 241 claims, against $18,885 paid for services in 2024. Boehringer Ingelheim Pharmaceuticals, Inc. was the largest of 2 companies reporting payments in 2025, $82.22 in all, mostly food and beverage.
Overview
| NPI | 1154612554 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D., MSCI |
| Sole proprietor | No |
| NPI issued | Apr 20, 2011 |
| Last updated in NPPES | Jan 13, 2021 |
| Certified by provider | Jan 13, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | 70664 | WI |
| Internal Medicine, Pulmonary Disease | 207RP1001X | 50581 | TN |
| Internal Medicine | 207R00000X | 50581 | TN |
| Internal Medicine, Critical Care Medicine | 207RC0200X | 50581 | TN |
| Internal Medicine, Critical Care Medicine | 207RC0200X | 70664 | WI |
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) (IL); Practitioner - Internal Medicine (TN); Practitioner - Pulmonary Disease (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 104 |
|---|---|
| Services billed | 265 across 28 procedure codes |
| Paid by Medicare | $18,885 |
Part D prescriptions in 2024
| Prescriptions (claims) | 241 · 384 30-day fills |
|---|---|
| Patients | 54 |
| Total drug cost | $397,377 |
| Generic share | 71% of claims |
Education and affiliations
| Medical school | University of Texas Medical School at San Antonio |
|---|---|
| Graduation year | 2011 |
| Medicare specialty | Critical Care (Intensivists) |
| Telehealth | Offers telehealth |
Medical groups
- University of Wisconsin Medical Foundation IncMadison, WI · 2,553 clinicians
- Freeport Memorial HospitalFreeport, IL · 178 clinicians
Hospital affiliation
Industry payments (Open Payments)
- 2025$82.22 · 2 payments from 2 companies
- 2024$260.49 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boehringer Ingelheim Pharmaceuticals, Inc. | $44.93 | 1 |
| United Therapeutics Corporation | $37.29 | 1 |
What the 2025 payments were for
- Food and Beverage$82.22 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 75 pulmonologists in Madison · All pulmonologists in Wisconsin