William Thomas Chang, DO
NPI 1770112609ActiveIndividual· Anesthesiology, Pain Medicine· Iowa City, IA
Anesthesiology, Pain Medicine (DO) in Iowa City, Iowa, trained at Marian University College of Osteopathic Medicine (class of 2020). Part D covered 53 prescriptions written in 2024, 100% of them generic. Medtronic, Inc. was the largest of 6 companies reporting payments in 2025, $5,194 in all, mostly travel and lodging.
Overview
| NPI | 1770112609 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | Yes |
| NPI issued | Apr 2, 2020 |
| Last updated in NPPES | Mar 27, 2024 |
| Certified by provider | Mar 27, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Anesthesiology, Pain Medicine Primary | 207LP2900X | R-13014 | IA |
| Physical Medicine & Rehabilitation | 208100000X | 125.078730 | IL |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Physical Medicine and Rehabilitation (IN); Practitioner - Physical Medicine and Rehabilitation (KY) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 53 · 62 30-day fills |
|---|---|
| Patients | 25 |
| Total drug cost | $1,049 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | Marian University College of Osteopathic Medicine |
|---|---|
| Graduation year | 2020 |
| Medicare specialty | Physical Medicine And Rehabilitation |
Medical group
- Deaconess Specialty Physicians, IncNewburgh, IN · 229 clinicians
Hospital affiliation
- Deaconess Hospital IncEvansville, IN
Industry payments (Open Payments)
- 2025$5,194 · 57 payments from 6 companies
- 2024$3,416 · 25 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medtronic, Inc. | $4,540 | 44 |
| Boston Scientific Corporation | $297.31 | 2 |
| Spr Therapeutics, Inc | $214.20 | 5 |
| Abbvie Inc. | $69.70 | 3 |
| Vertex Pharmaceuticals Incorporated | $50.88 | 2 |
What the 2025 payments were for
- Travel and Lodging$2,812 · 16 payments
- Food and Beverage$2,382 · 41 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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