Dr. Robert P. Mckinstry, MD
Joint Replacement Surgery (Adult Reconstructive Orthopaedic Surgery Physician)
3333 N Calvert St, Suite 400
Baltimore, MD 21218
Who else practices at this address →
Baltimore city includes primary care (36% of residents) shortage areas. About shortage areas
- Medicare participating
At a glance
- Years since graduation
- 21
- In the NPI registry since
- 2007
- Medicare patients seen, 2024
- 650
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. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 2007Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
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
-
Adult Reconstructive Orthopaedic Surgery Physician primary
MD license D0075065
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Medstar Union Memorial Hospital Baltimore, MD
- Medstar Good Samaritan Hospital Baltimore, MD
Medical groups
- Medstar Medical Group II LLC (3,767 clinicians)
- Suburban/nrh Medical Rehabilitation Inc (941 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
- 650
- Services billed
- 2,711
- Patients’ average age
- 74
| Service | Times | Patients |
|---|---|---|
| Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 484 | 85 |
| Established patient office or other outpatient visit, 20-29 minutes | 292 | 249 |
| X-ray of hip, 2-3 views | 245 | 197 |
| X-ray of knee, 4 or more views | 216 | 197 |
| Aspiration and/or injection of fluid from large joint | 160 | 116 |
| X-ray of knee, 3 views | 133 | 107 |
| Established patient office or other outpatient visit, 40-54 minutes | 101 | 99 |
| Replacement of thigh bone and hip joint with prosthesis | 86 | 82 |
| New patient office or other outpatient visit, 30-44 minutes | 86 | 86 |
| Replacement of knee joint, both sides of knee | 72 | 69 |
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 |
|---|---|
| Oxycodone Hcl Other prescribers in Baltimore, MD | 27 |
| Amoxicillin Other prescribers in Baltimore, MD | 12 |
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, 1 companies reported 2 payments worth $190 in total to this clinician.
| Zimmer Biomet Holdings, Inc. | $190 |
|---|
| Food and Beverage | $190 |
|---|
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.