John P. Hammerstein, M.D.
NPI 1265573307ActiveIndividual· Orthopaedic Surgery· Linton, IN
Orthopaedic Surgery (M.D.) in Linton, Indiana, trained at Indiana University School of Medicine (class of 2002). 295 Medicare patients in 2024, $123,112 paid; all of their 88 Part D prescriptions were generic. Trilliant Surgical LLC. was the largest of 3 companies reporting payments in 2025, $127.97 in all, mostly food and beverage.
Overview
| NPI | 1265573307 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Feb 10, 2007 |
| Last updated in NPPES | May 5, 2023 |
| Certified by provider | May 5, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery Primary | 207X00000X | 01065333A | IN |
| Orthopaedic Surgery, Orthopaedic Surgery of the Spine | 207XS0117X | 01065333A | IN |
| Orthopaedic Surgery, Sports Medicine | 207XX0005X | 01065333A | IN |
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 - Orthopedic Surgery (IN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 295 |
|---|---|
| Services billed | 4,532 across 52 procedure codes |
| Paid by Medicare | $123,112 |
Part D prescriptions in 2024
| Prescriptions (claims) | 88 · 88 30-day fills |
|---|---|
| Patients | 56 |
| Total drug cost | $588.64 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | Indiana University School of Medicine |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Orthopedic Surgery |
| Secondary specialties | Sports Medicine |
Medical group
- Greene County General HospitalLinton, IN · 103 clinicians
Hospital affiliation
- Greene County General HospitalLinton, IN
Other facilities
- Home Health Care Solutions LLCHome health agency · Mooresville, IN
Industry payments (Open Payments)
- 2025$127.97 · 4 payments from 3 companies
- 2024$18.25 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Trilliant Surgical LLC. | $91.39 | 1 |
| Orthofix Medical, Inc. | $20.40 | 2 |
| Smith+nephew, Inc. | $16.18 | 1 |
What the 2025 payments were for
- Food and Beverage$127.97 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records