Marc S. Kowalsky, MD
NPI 1699941823ActiveIndividual· Orthopaedic Surgery· Greenwich, CT
Orthopaedic Surgery (MD) in Greenwich, Connecticut, trained at Tufts University School of Medicine (class of 2003). 455 Medicare patients in 2024, $148,009 paid; all of their 477 Part D prescriptions were generic. Shoulder Innovations, Inc. was the largest of 2 companies reporting payments in 2025, $253.87 in all, mostly food and beverage.
Overview
| NPI | 1699941823 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 7, 2008 |
| Last updated in NPPES | Mar 22, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery Primary | 207X00000X | 50484 | CT |
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 (CT); Practitioner - Orthopedic Surgery (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 455 |
|---|---|
| Services billed | 6,097 across 68 procedure codes |
| Paid by Medicare | $148,009 |
Part D prescriptions in 2024
| Prescriptions (claims) | 477 · 489 30-day fills |
|---|---|
| Patients | 263 |
| Total drug cost | $2,819 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | Tufts University School of Medicine |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Orthopedic Surgery |
Medical group
- Orthopaedic and Neurosurgery Specialists, PLLCHarrison, NY · 259 clinicians
Hospital affiliation
- Greenwich Hospital Association -Greenwich, CT
Other facilities
- Burke Rehabilitation HospitalInpatient rehabilitation facility · White Plains, NY
Industry payments (Open Payments)
- 2025$253.87 · 2 payments from 2 companies
- 2024$137.75 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Shoulder Innovations, Inc. | $184.85 | 1 |
| Smith+nephew, Inc. | $69.02 | 1 |
What the 2025 payments were for
- Food and Beverage$253.87 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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