Dr. Stephen F. Johnstone, M.D.
Orthopedic Surgery (Orthopaedic Surgery Physician)
- Medicare participating
At a glance
- Years since graduation
- 20
- In the NPI registry since
- 2010
- Medicare patients seen, 2024
- 155
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is
Education and training
- 2010Registered with an NPI (national billing number; not a license date)
Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Orthopaedic Surgery Physician primary
NY license 280422 · PA license MT198180
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Mount Sinai Hospital New York, NY
Medical groups
- North Shore Medical Group of the Mount Sinai School of Medicine (331 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 155
- Services billed
- 570
- Patients’ average age
- 76
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 20-29 minutes | 153 | 100 |
| Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 144 | 25 |
| New patient office or other outpatient visit, 30-44 minutes | 63 | 63 |
| Aspiration and/or injection of fluid from large joint | 37 | 28 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Diclofenac Sodium Other prescribers in Astoria, NY | 85 |
| Celecoxib Other prescribers in Astoria, NY | 57 |
| Naproxen Other prescribers in Astoria, NY | 51 |
| Meloxicam Other prescribers in Astoria, NY | 49 |
| Ibuprofen Other prescribers in Astoria, NY | 24 |
| Oxycodone Hcl Other prescribers in Astoria, NY | 15 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 2 companies reported 11 payments worth $1,351 in total to this clinician.
| Stryker Corporation | $1,301 |
|---|---|
| Ethicon US, LLC | $50.68 |
| Travel and Lodging | $951 |
|---|---|
| Food and Beverage | $400 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Stryker Corporation Apr 24, 2025 | Travel and Lodging ACCOLADE · HIPS · travel to FORT LAUDERDALE, FL | $585 |
| Stryker Corporation Mar 10, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to ATLANTA, GA | $366 |
Each payment as the company reported it, with the products it named. Meals are counted in the totals above but not listed one by one.
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.