William Douglas Zweig, M.D.
NPI 1043201205ActiveIndividual· Internal Medicine, Pulmonary Disease· Saint Louis, MO
Internal Medicine, Pulmonary Disease (M.D.) in Saint Louis, Missouri, trained at University of Missouri, Kansas City, School of Medicine (class of 1980). Their prescriptions cost Medicare Part D more than their services did: $2,850,896 for 2,573 claims, against $136,849 paid for services in 2024. Glaxosmithkline, LLC. was the largest of 21 companies reporting payments in 2025, $3,255 in all, mostly food and beverage.
Overview
| NPI | 1043201205 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 4, 2005 |
| Last updated in NPPES | Aug 4, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | MOR7E74 | 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 - Pulmonary Disease (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 624 |
|---|---|
| Services billed | 1,990 across 26 procedure codes |
| Paid by Medicare | $136,849 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,573 · 3,395 30-day fills |
|---|---|
| Patients | 443 |
| Total drug cost | $2,850,896 |
| Generic share | 34% of claims |
Education and affiliations
| Medical school | University of Missouri, Kansas City, School of Medicine |
|---|---|
| Graduation year | 1980 |
| Medicare specialty | Pulmonary Disease |
| Secondary specialties | Internal Medicine |
Medical group
- Pulmonary Consultants IncSaint Charles, MO · 10 clinicians
Hospital affiliations
- Alton Memorial HospitalAlton, IL
- Barnes Jewish HospitalSaint Louis, MO
- Barnes-Jewish St Peters HospitalSaint Peters, MO
- Christian Hospital NortheastSaint Louis, MO
- Progress West HospitalOfallon, MO
Industry payments (Open Payments)
- 2025$3,255 · 157 payments from 21 companies
- 2024$3,382 · 155 payments from 22 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $502.59 | 43 |
| Astrazeneca Pharmaceuticals LP | $493.38 | 30 |
| Actelion Pharmaceuticals US, Inc. | $404.85 | 6 |
| Jazz Pharmaceuticals Inc. | $281.99 | 6 |
| Insmed, Inc. | $279.76 | 17 |
What the 2025 payments were for
- Food and Beverage$3,108 · 152 payments
- Education$147.42 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 143 pulmonologists in Saint Louis · All pulmonologists in Missouri