Stephen Findlay Johnstone, M.D.
NPI 1811201403ActiveIndividual· Orthopaedic Surgery· Astoria, NY
Orthopaedic Surgery (M.D.) with North Shore Medical Group of the Mount Sinai School of Medicine, practicing in Astoria, New York. 155 Medicare patients in 2024, $57,683 paid; nearly all of their 336 Part D prescriptions were generic (99%). Stryker Corporation was the largest of 2 companies reporting payments in 2025, $1,351 in all, mostly travel and lodging. Lists Mount Sinai Hospital as a hospital affiliation.
Overview
| NPI | 1811201403 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 6, 2010 |
| Last updated in NPPES | Apr 19, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery Primary | 207X00000X | 280422 | NY |
| Orthopaedic Surgery | 207X00000X | MT198180 | PA |
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 (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 155 |
|---|---|
| Services billed | 570 across 27 procedure codes |
| Paid by Medicare | $57,683 |
Part D prescriptions in 2024
| Prescriptions (claims) | 336 · 374 30-day fills |
|---|---|
| Patients | 136 |
| Total drug cost | $12,902 |
| Generic share | 99% of claims |
Education and affiliations
| Graduation year | 2006 |
|---|---|
| Medicare specialty | Orthopedic Surgery |
Medical group
- North Shore Medical Group of the Mount Sinai School of MedicineBrooklyn, NY · 331 clinicians
Hospital affiliation
- Mount Sinai HospitalNew York, NY
Other facilities
- Vns of Ny Home Care ChhaHome health agency · New York, NY
Industry payments (Open Payments)
- 2025$1,351 · 11 payments from 2 companies
- 2024$143.66 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Stryker Corporation | $1,301 | 10 |
| Ethicon US, LLC | $50.68 | 1 |
What the 2025 payments were for
- Travel and Lodging$951.47 · 2 payments
- Food and Beverage$399.83 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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