Dr. John Grandrimo, D.O.
Contact & Location
717-652-9555
Harrisburg, PA 17109
Dr. Grandrimo performs more knee replacement procedures than 53% of orthopedic surgeons in Pennsylvania, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #144 of 308 ranked knee surgeons in Pennsylvania.
About Dr. Grandrimo
Practice. Dr. John Grandrimo is a board-certified orthopedic surgeon practicing in Harrisburg, Pennsylvania. The latest annual CMS data records 35 knee replacements. That is #144 in Pennsylvania for knee replacement. A Medicare provider since 2005.
Trend. Medicare records run from 2013 to 2024, 12 years. Volume rose from 12 procedures a year to 35, up 192%.
National context. Among 6,612 knee replacement surgeons tracked nationally, 35 procedures is below the national average of 45. Medicare covers part of all joint replacements, so true volume is likely higher.
Local context. Harrisburg has 7 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 |
|---|---|---|
| 2013 | 0 | 12 |
| 2014 | 0 | 12 |
| 2015 | 0 | 12 |
| 2016 | 19 | 12 |
| 2017 | 12 | 15 |
| 2018 | 0 | 26 |
| 2019 | 0 | 21 |
| 2020 | 11 | 32 |
| 2021 | 0 | 26 |
| 2022 | 0 | 36 |
| 2023 | 0 | 30 |
| 2024 | 0 | 35 |
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. 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. Grandrimo Compares
Procedure volume compared to the Pennsylvania state average.
Volume Trend Analysis
Dr. Grandrimo's Medicare-recorded procedure volume has trended upward over 12 years, increasing 192% from 12 procedures in 2013 to 35 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.
Prehabilitation: Preparing Your Body for SurgeryEvidence-based exercises and lifestyle adjustments that can improve surgical outcomes and speed recovery when started weeks before your procedure.
Rehabilitation Roadmap: Your Complete Recovery GuideA structured physical therapy progression from the first post-op exercises through full strength and mobility restoration over 3 to 6 months.
Medicare Bundled Payment Programs for Joint ReplacementHow bundled payment models affect your joint replacement costs and care coordination, and what it means for hospital and surgeon selection.
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. Grandrimo
How does Dr. Grandrimo's procedure volume compare to other Pennsylvania surgeons?
Dr. Grandrimo has performed 35 Medicare-verified joint replacement procedures. The Pennsylvania average is 66 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Grandrimo ranks #234 out of 376 orthopedic surgeons in Pennsylvania.
What types of joint replacement does Dr. Grandrimo perform?
Dr. Grandrimo's reported Medicare volume is focused on knee replacement, with 35 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
Are there other orthopedic surgeons near Dr. Grandrimo in Harrisburg?
Yes. There are 7 orthopedic surgeons in Harrisburg 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. Grandrimo 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, which puts Dr. Grandrimo's total volume across all insurers at roughly 130 to 150 procedures against the 35 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. Grandrimo's procedure volume changed over time?
Yes. Dr. Grandrimo's Medicare-recorded volume has increased from 12 procedures in 2013 to 35 in the most recent data, a 192% increase over 12 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 43 procedures in 2020.
Which hospitals is Dr. Grandrimo affiliated with?
According to CMS facility affiliation data, Dr. Grandrimo is affiliated with Upmc Pinnacle Hospitals, Upmc Memorial.
How does Dr. Grandrimo compare to other orthopedic surgeons in Harrisburg?
Among the 7 orthopedic surgeons in Harrisburg, Dr. Grandrimo ranks #6 by total Medicare procedure volume. The highest-volume surgeon in Harrisburg has 169 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Grandrimo practices?
Upmc Pinnacle Hospitals (4 out of 5 CMS stars, hip/knee complication rate similar to national average); Upmc Memorial (3 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 Harrisburg, Pennsylvania
Dr. Grandrimo's 35 Medicare procedures are below the Harrisburg average of 77. The table below compares verified procedure volumes for orthopedic surgeons practicing in Harrisburg.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Alex Shin | 169 | Hip, Knee |
| Dr. Scott King | 124 | Hip, Knee |
| Dr. Matthew Espenshade | 79 | Hip, Knee, Shoulder |
| Dr. Eric Kutz | 63 | Hip, Knee |
| Dr. Timothy Ackerman | 45 | Knee, Shoulder |
| Dr. Lisa O'brien | 24 | Shoulder |
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.