Dr. Robert Gillis, MD
Dr. Robert Gillis is a board-certified orthopedic surgeon practicing in Gettysburg, Pennsylvania. Dr. Gillis has performed 39 Medicare-verified shoulder replacements (#23 in Pennsylvania) and 34 knee replacements, for a combined total of 73 procedures.
In Pennsylvania, Dr. Gillis performs above average in shoulder (39 vs 29 avg), below average in knee (34 vs 45 avg).
Dr. Gillis's reported Medicare volume is split between shoulder replacements (39 cases) and knee replacements (34 cases).
Gettysburg is home to 2 orthopedic surgeons in the current Medicare dataset. Patients in the Gettysburg area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Gillis extend back to 2018, covering 6 years of data. Over that period, recorded procedure volume increased from 15 to 73 in the most recent data, a 387% increase. This sustained growth reflects an expanding joint replacement practice.
Among 2,092 shoulder replacement surgeons tracked nationally, Dr. Gillis's 39 verified procedures is above the national average of 28.
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. Gillis Compares
Procedure volume compared to the Pennsylvania state average.
Contact & Location
Gettysburg, PA 17325
Verified Case Volume Trends (2013-Current)
Volume Trend Analysis
Dr. Gillis's Medicare-recorded procedure volume has trended upward over 6 years, increasing 387% from 15 procedures in 2018 to 73 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. Gillis
How does Dr. Gillis's procedure volume compare to other Pennsylvania surgeons?
Dr. Gillis has performed 73 Medicare-verified joint replacement procedures. This is in line with the Pennsylvania average of 63 procedures per surgeon. Dr. Gillis ranks #109 out of 388 orthopedic surgeons in Pennsylvania.
What types of joint replacement does Dr. Gillis perform?
Dr. Gillis's Medicare data shows procedures in shoulder replacement (39 cases) and knee replacement (34 cases).
Are there other orthopedic surgeons near Dr. Gillis in Gettysburg?
Yes. There are 2 orthopedic surgeons in Gettysburg 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 Pennsylvania surgeons.
What does the Medicare data for Dr. Gillis 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. Gillis's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 73 procedures shown here.
Has Dr. Gillis's procedure volume changed over time?
Yes. Dr. Gillis's Medicare-recorded volume has increased from 15 procedures in 2018 to 73 in the most recent data, a 387% increase over 6 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 73 procedures in 2023.
Does Dr. Gillis perform more than one type of joint replacement?
Yes. Dr. Gillis's Medicare data shows procedures in shoulder replacement (39 cases), knee replacement (34 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Gillis affiliated with?
According to CMS facility affiliation data, Dr. Gillis is affiliated with Gettysburg Hospital, Wellspan York Hospital.
What are the quality ratings for hospitals where Dr. Gillis practices?
Gettysburg Hospital (4 out of 5 CMS stars, insufficient case volume for complication rate comparison); Wellspan York Hospital (4 out of 5 CMS stars, insufficient case volume for complication rate comparison). These are hospital-level quality metrics from CMS Hospital Compare and do not reflect individual surgeon outcomes.
Other Orthopedic Surgeons in Gettysburg, Pennsylvania
Dr. Gillis's 73 Medicare procedures are below the Gettysburg average of 87. The table below compares verified procedure volumes for orthopedic surgeons practicing in Gettysburg.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Kyle Messick | 100 | Hip, Knee |
Patient Reviews & Ratings
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