Dr. Robert Mannherz, M.D.
Contact & Location
215-355-7220
Southampton, PA 18966
Dr. Mannherz performs more knee replacement procedures than 70% of orthopedic surgeons in Pennsylvania, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #92 of 308 ranked knee surgeons in Pennsylvania.
About Dr. Mannherz
Practice. Dr. Robert Mannherz is a board-certified orthopedic surgeon practicing in Southampton, Pennsylvania. The latest annual CMS data records 50 knee replacements, 21 hip replacements, and 16 shoulder replacements, 87 procedures in all. That is #92 in Pennsylvania for knee replacement.
Trend. Medicare records run from 2013 to 2024, 12 years. Volume rose from 25 procedures a year to 87, up 248%.
National context. Among 6,612 knee replacement surgeons tracked nationally, 50 procedures is near the national average of 45.
Local context. Southampton has 3 orthopedic surgeons in the current Medicare data. Comparing volume and procedure mix across them is one way to narrow a shortlist.
Verified Case Volume Trends (2013-Current)
| Year | Hip Replacement | Knee Replacement | Shoulder Replacement |
|---|---|---|---|
| 2013 | 0 | 25 | 0 |
| 2014 | 11 | 42 | 0 |
| 2015 | 15 | 33 | 0 |
| 2016 | 16 | 40 | 0 |
| 2017 | 0 | 45 | 16 |
| 2018 | 12 | 32 | 11 |
| 2019 | 0 | 67 | 0 |
| 2020 | 24 | 45 | 0 |
| 2021 | 22 | 65 | 12 |
| 2022 | 16 | 56 | 0 |
| 2023 | 16 | 56 | 13 |
| 2024 | 21 | 50 | 16 |
Verified Medicare Cases
How is this estimated?
Medicare Part B fee-for-service claims are one payer stream among several, and the share they represent differs by procedure. In 2024 it was 23% to 28% for knee replacement, 25% to 33% for hip replacement, 29% to 37% for shoulder replacement. Each verified count above is divided by its own procedure's range, and the results are added, to estimate total practice volume across all payers. The verified Medicare count is the definitive, audited figure; this is a range derived from published national volume projections, not a measurement, and an individual practice can sit well outside it: how these ranges are derived, and their sources.
How Dr. Mannherz Compares
Procedure volume compared to the Pennsylvania state average.
Volume Trend Analysis
Dr. Mannherz's Medicare-recorded procedure volume has trended upward over 12 years, increasing 248% from 25 procedures in 2013 to 87 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 Knee Replacement
If you are considering knee replacement surgery, these evidence-based guides can help you prepare and recover:
An overview of current surgical approaches including robotic-assisted and minimally invasive techniques, implant options, and expected outcomes.
What to Expect on the Day of SurgeryA step-by-step walkthrough of your surgical day, from pre-op preparation through anesthesia, the procedure itself, and the first hours of recovery.
Nutrition and Recovery After Joint ReplacementHow protein intake, anti-inflammatory foods, hydration, and targeted supplements support bone healing and tissue repair after surgery.
Medicare Coverage for Joint ReplacementWhat Medicare Part A and Part B cover for joint replacement surgery, including hospital stays, surgeon fees, anesthesia, and physical therapy.
Knee Replacement Recovery Overview
Recovery timelines vary by patient, but here is a general overview of what to expect after knee replacement surgery:
Individual recovery varies based on overall health, age, and adherence to physical therapy. View full knee replacement recovery guide and product recommendations
Frequently Asked Questions About Dr. Mannherz
How does Dr. Mannherz's procedure volume compare to other Pennsylvania surgeons?
Dr. Mannherz has performed 87 Medicare-verified joint replacement procedures. This is in line with the Pennsylvania average of 66 procedures per surgeon. Dr. Mannherz ranks #89 out of 376 orthopedic surgeons in Pennsylvania.
What types of joint replacement does Dr. Mannherz perform?
Dr. Mannherz performs all three major joint replacement procedures: knee replacement (50 cases), hip replacement (21 cases), shoulder replacement (16 cases). This breadth indicates a comprehensive orthopedic joint replacement practice.
Are there other orthopedic surgeons near Dr. Mannherz in Southampton?
Yes. There are 3 orthopedic surgeons in Southampton 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. Mannherz represent?
The procedure counts shown are based on 2024 Medicare Part B fee-for-service claims data, published by the Centers for Medicare and Medicaid Services (CMS). Medicare fee-for-service is only one payer stream, and the share of national volume it represents differs by procedure. In 2024 the share was 23% to 28% for knee replacement, 25% to 33% for hip replacement, 29% to 37% for shoulder replacement, which puts Dr. Mannherz's total volume across all insurers at roughly 290 to 360 procedures against the 87 verified here. Those shares are derived from published national volume projections rather than quoted from a single publication, and they are estimates with real uncertainty. The OrthoProcedures methodology page shows the full derivation, the sources, and the limits at orthoprocedures.com/data-methodology.html.
Has Dr. Mannherz's procedure volume changed over time?
Yes. Dr. Mannherz's Medicare-recorded volume has increased from 25 procedures in 2013 to 87 in the most recent data, a 248% increase over 12 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 99 procedures in 2021.
Does Dr. Mannherz perform more than one type of joint replacement?
Yes. Dr. Mannherz's Medicare data shows procedures in knee replacement (50 cases), hip replacement (21 cases), shoulder replacement (16 cases). Performing all three major joint replacements places Dr. Mannherz among the 5% of orthopedic surgeons nationally who cover hip, knee, and shoulder arthroplasty.
Which hospitals is Dr. Mannherz affiliated with?
According to CMS facility affiliation data, Dr. Mannherz is affiliated with Holy Redeemer Hospital And Medical Center, St Mary Medical Center.
How does Dr. Mannherz compare to other orthopedic surgeons in Southampton?
Among the 3 orthopedic surgeons in Southampton, Dr. Mannherz ranks #1 by total Medicare procedure volume. Dr. Mannherz has the highest verified Medicare volume in the city.
What are the quality ratings for hospitals where Dr. Mannherz practices?
Holy Redeemer Hospital And Medical Center (2 out of 5 CMS stars, hip/knee complication rate similar to national average); St Mary Medical Center (2 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 Southampton, Pennsylvania
Dr. Mannherz's 87 Medicare procedures are above the Southampton average of 45. The table below compares verified procedure volumes for orthopedic surgeons practicing in Southampton.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Todd Schwartz | 28 | Knee |
| Dr. David Reinhardt | 20 | 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.