Dr. Peter Johnston, MD
Contact & Location
Leonardtown, MD 20650
Dr. Peter Johnston is a board-certified orthopedic surgeon practicing in Leonardtown, Maryland. A Medicare provider since 2007, Dr. Johnston has performed 75 Medicare-verified shoulder replacements, ranking #3 in Maryland.
In Maryland, Dr. Johnston performs well above average in shoulder (75 vs 34 avg).
Dr. Johnston's Medicare data shows a focused shoulder replacement practice with 75 verified procedures. Surgeons who concentrate on a single procedure type often develop deep procedural expertise, though total practice volume may include additional procedures not captured in Medicare fee-for-service data.
Leonardtown is home to 5 orthopedic surgeons in the current Medicare dataset. Patients in the Leonardtown area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Johnston extend back to 2013, covering 12 years of data. Over that period, recorded procedure volume increased from 44 to 75 in the most recent data, a 70% increase. This sustained growth reflects an expanding joint replacement practice.
Among 2,213 shoulder replacement surgeons tracked nationally, Dr. Johnston's 75 verified procedures is more than 2x the national average of 29, ranking #101 nationally.
Verified Case Volume Trends (2013-Current)
Verified Medicare Cases
How is this estimated?
Medicare Part B fee-for-service claims represent approximately 33–37% of all joint replacements performed nationally (source: CMS data, AJRR). This range estimates the surgeon's total practice volume across all payers. The verified Medicare count above is the definitive, audited figure.
How Dr. Johnston Compares
Procedure volume compared to the Maryland state average.
Volume Trend Analysis
Dr. Johnston's Medicare-recorded procedure volume has trended upward over 12 years, increasing 70% from 44 procedures in 2013 to 75 in the most recent data.
Hospital Affiliations & Quality
Quality ratings and complication rates are hospital-level metrics from CMS Hospital Compare and do not reflect individual surgeon performance. Star ratings updated quarterly. Complication data covers a rolling 3-year period.
Patient Resources: Preparing for Shoulder Replacement
If you are considering shoulder replacement surgery, these evidence-based guides can help you prepare and recover:
A practical checklist of questions covering experience, technique, hospital choice, and recovery expectations to discuss during your surgical consultation.
Nutrition and Recovery After Joint ReplacementHow protein intake, anti-inflammatory foods, hydration, and targeted supplements support bone healing and tissue repair after surgery.
Outpatient Joint Replacement: A Medicare GuideHow outpatient joint replacement works under Medicare, including eligibility criteria, cost differences, and what to expect with same-day discharge.
Shoulder Replacement Recovery Overview
Recovery timelines vary by patient, but here is a general overview of what to expect after shoulder replacement surgery:
Individual recovery varies based on overall health, age, and adherence to physical therapy. View full shoulder replacement recovery guide and product recommendations
Frequently Asked Questions About Dr. Johnston
How does Dr. Johnston's procedure volume compare to other Maryland surgeons?
Dr. Johnston has performed 75 Medicare-verified joint replacement procedures. This is in line with the Maryland average of 71 procedures per surgeon. Dr. Johnston ranks #54 out of 166 orthopedic surgeons in Maryland.
What types of joint replacement does Dr. Johnston perform?
Dr. Johnston's reported Medicare volume is focused on shoulder replacement, with 75 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
How experienced is Dr. Johnston with shoulder replacement surgery?
Dr. Johnston ranks #3 in Maryland for shoulder replacement with 75 Medicare-verified procedures. This high ranking among 166 state surgeons indicates significant experience with this specific procedure.
Are there other orthopedic surgeons near Dr. Johnston in Leonardtown?
Yes. There are 5 orthopedic surgeons in Leonardtown in the current Medicare dataset. Patients can compare procedure volumes and specializations to choose the surgeon who best fits their needs. Use the state page to view all Maryland surgeons.
What does the Medicare data for Dr. Johnston represent?
The procedure counts shown are based on the most recent Medicare Part B fee-for-service claims data, published by the Centers for Medicare and Medicaid Services (CMS). This captures approximately 33–37% of all joint replacements performed nationally. Dr. Johnston's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 75 procedures shown here.
Has Dr. Johnston's procedure volume changed over time?
Yes. Dr. Johnston's Medicare-recorded volume has increased from 44 procedures in 2013 to 75 in the most recent data, a 70% increase over 12 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 85 procedures in 2019.
Which hospitals is Dr. Johnston affiliated with?
According to CMS facility affiliation data, Dr. Johnston is affiliated with Medstar Saint Mary'S Hospital.
How does Dr. Johnston compare to other orthopedic surgeons in Leonardtown?
Among the 5 orthopedic surgeons in Leonardtown, Dr. Johnston ranks #1 by total Medicare procedure volume. Dr. Johnston has the highest verified Medicare volume in the city.
What are the quality ratings for hospitals where Dr. Johnston practices?
Medstar Saint Mary'S Hospital (4 out of 5 CMS stars, hip/knee complication rate similar to national average). These are hospital-level quality metrics from CMS Hospital Compare and do not reflect individual surgeon outcomes.
Other Orthopedic Surgeons in Leonardtown, Maryland
Dr. Johnston's 75 Medicare procedures are above the Leonardtown average of 42. The table below compares verified procedure volumes for orthopedic surgeons practicing in Leonardtown.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Daniel Bauk | 68 | Hip, Knee |
| Dr. Colleen Balkam | 28 | Hip, Knee |
| Dr. Emmanuel Atiemo | 25 | Hip, Knee |
| Dr. Patricia Turner | 14 | Knee |
Patient Resources & Verification
Research reviews, verify credentials, and check official quality data through these trusted sources:
Medicare Care Compare and NPI Registry are official U.S. government sources. Google reviews reflect user-submitted feedback. OrthoProcedures.com does not verify the accuracy of third-party review content.