John Adam Hamilton, MD
NPI 1982720231ActiveIndividual· Orthopaedic Surgery· Marshalltown, IA
Orthopaedic Surgery (MD) in Marshalltown, Iowa, trained at Creighton University School of Medicine (class of 2006). 395 Medicare patients in 2024, $145,375 paid; nearly all of their 51 Part D prescriptions were generic (90%). Stryker Corporation was the largest of 3 companies reporting payments in 2025, $261.93 in all, mostly food and beverage.
Overview
| NPI | 1982720231 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 21, 2007 |
| Last updated in NPPES | Jul 17, 2023 |
| Certified by provider | Jul 12, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery Primary | 207X00000X | 48358 | IA |
| Orthopaedic Surgery | 207X00000X | 53573 | MN |
| Orthopaedic Surgery | 207X00000X | 57-012100 | OH |
| Orthopaedic Surgery | 207X00000X | 69507 | WI |
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 - Orthopedic Surgery (IA); Practitioner - Orthopedic Surgery (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 395 |
|---|---|
| Services billed | 2,511 across 72 procedure codes |
| Paid by Medicare | $145,375 |
Part D prescriptions in 2024
| Prescriptions (claims) | 51 · 51 30-day fills |
|---|---|
| Patients | 39 |
| Total drug cost | $1,648 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | Creighton University School of Medicine |
|---|---|
| Graduation year | 2006 |
| Medicare specialty | Orthopedic Surgery |
Medical groups
- McFarland Clinic PCAmes, IA · 363 clinicians
- Franklin General HospitalHampton, IA · 27 clinicians
Hospital affiliations
- Franklin General HospitalHampton, IA
- Mary Greeley Medical CenterAmes, IA
- Unitypoint Health - MarshalltownMarshalltown, IA
Industry payments (Open Payments)
- 2025$261.93 · 3 payments from 3 companies
- 2024$51.49 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Stryker Corporation | $160.10 | 1 |
| Smith+nephew, Inc. | $87.91 | 1 |
| Vertex Pharmaceuticals Incorporated | $13.92 | 1 |
What the 2025 payments were for
- Food and Beverage$261.93 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Orthopaedic Surgery providers in Marshalltown
- 1215920020
- 1770576043
- 1568842391
- 1699768978
- 1932192218