William H. Hass, MD
NPI 1801871637ActiveIndividual· Anesthesiology· Huntsville, AL
Anesthesiology (MD) in Huntsville, Alabama, trained at Medical College of Wisconsin (class of 1972). Medicare paid $102,467 for services to 2,089 patients in 2024. Takeda Pharmaceuticals U.S.A., Inc. was the largest of 5 companies reporting payments in 2025, $269.14 in all, mostly food and beverage.
Overview
| NPI | 1801871637 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Dec 14, 2005 |
| Last updated in NPPES | Jan 15, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Anesthesiology Primary | 207L00000X | 19501 | AL |
| Anesthesiology, Pain Medicine | 207LP2900X | 19501 | AL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Anesthesiology (AL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 2,089 |
|---|---|
| Services billed | 2,340 across 5 procedure codes |
| Paid by Medicare | $102,467 |
Education and affiliations
| Medical school | Medical College of Wisconsin |
|---|---|
| Graduation year | 1972 |
| Medicare specialty | Anesthesiology |
| Secondary specialties | Pain Management |
Medical group
- Gut PCDothan, AL · 56 clinicians
Industry payments (Open Payments)
- 2025$269.14 · 14 payments from 5 companies
- 2024$205.24 · 11 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Takeda Pharmaceuticals U.S.A., Inc. | $112.55 | 5 |
| Lilly USA, LLC | $106.49 | 6 |
| Madrigal Pharmaceuticals | $23.20 | 1 |
| Intercept Pharmaceuticals, Inc. | $18.23 | 1 |
| Phathom Pharmaceuticals, Inc. | $8.67 | 1 |
What the 2025 payments were for
- Food and Beverage$269.14 · 14 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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