Mark J. Isaacson, D.O.
NPI 1144457474ActiveIndividual· Orthopaedic Surgery· Ankeny, IA
Orthopaedic Surgery (D.O.) with Des Moines Orthopaedic Surgeons PC, practicing in Ankeny, Iowa. 853 Medicare patients in 2024, $384,978 paid; nearly all of their 668 Part D prescriptions were generic (98%). Zimmer Biomet Holdings, Inc. was the largest of 4 companies reporting payments in 2025, $807.71 in all, mostly food and beverage. Lists Mary Greeley Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1144457474 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Jun 13, 2009 |
| Last updated in NPPES | Mar 5, 2026 |
| Certified by provider | Mar 5, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery Primary | 207X00000X | 04680 | IA |
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) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 853 |
|---|---|
| Services billed | 5,392 across 66 procedure codes |
| Paid by Medicare | $384,978 |
Part D prescriptions in 2024
| Prescriptions (claims) | 668 · 674 30-day fills |
|---|---|
| Patients | 329 |
| Total drug cost | $3,755 |
| Generic share | 98% of claims |
Education and affiliations
| Graduation year | 2009 |
|---|---|
| Medicare specialty | Orthopedic Surgery |
Medical group
- Des Moines Orthopaedic Surgeons PCDes Moines, IA · 105 clinicians
Hospital affiliations
- Mary Greeley Medical CenterAmes, IA
- Unitypoint Health - Des Moines Iowa Methodist MediDes Moines, IA
Industry payments (Open Payments)
- 2025$807.71 · 14 payments from 4 companies
- 2024$280.25 · 5 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Zimmer Biomet Holdings, Inc. | $411.07 | 6 |
| Depuy Synthes Sales Inc. | $340.60 | 6 |
| Stryker Corporation | $35.43 | 1 |
| Vertex Pharmaceuticals Incorporated | $20.61 | 1 |
What the 2025 payments were for
- Food and Beverage$807.71 · 14 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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