Dr. Colin Penrose, M.D.
Contact & Location
317-455-1064
Indianapolis, IN 46241
Terre Haute, IN 47802
Zionsville, IN 46077
Bloomington, IN 47403
Dr. Penrose performs more knee replacement procedures than 80% of orthopedic surgeons in Indiana, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #37 of 188 ranked knee surgeons in Indiana.
About Dr. Penrose
Practice. Dr. Colin Penrose is a board-certified orthopedic surgeon practicing in Indianapolis, Indiana. The latest annual CMS data records 54 knee replacements and 25 hip replacements, 79 procedures in all. That is #37 in Indiana for knee replacement. A Medicare provider since 2016.
Trend. Medicare records run from 2022 to 2024, 3 years. Volume rose from 34 procedures a year to 79, up 132%.
National context. Among 6,612 knee replacement surgeons tracked nationally, 54 procedures is above the national average of 45.
Local context. Indianapolis has 30 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 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 12 | 22 |
| 2023 | 40 | 65 |
| 2024 | 25 | 54 |
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. 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. Penrose Compares
Procedure volume compared to the Indiana state average.
Volume Trend Analysis
Dr. Penrose's Medicare-recorded procedure volume has trended upward over 3 years, increasing 132% from 34 procedures in 2022 to 79 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. Penrose
How does Dr. Penrose's procedure volume compare to other Indiana surgeons?
Dr. Penrose has performed 79 Medicare-verified joint replacement procedures. This is in line with the Indiana average of 60 procedures per surgeon. Dr. Penrose ranks #54 out of 224 orthopedic surgeons in Indiana.
What types of joint replacement does Dr. Penrose perform?
Dr. Penrose's Medicare data shows procedures in knee replacement (54 cases) and hip replacement (25 cases).
Are there other orthopedic surgeons near Dr. Penrose in Indianapolis?
Yes. There are 30 orthopedic surgeons in Indianapolis 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 Indiana surgeons.
What does the Medicare data for Dr. Penrose 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, which puts Dr. Penrose's total volume across all insurers at roughly 270 to 330 procedures against the 79 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. Penrose's procedure volume changed over time?
Yes. Dr. Penrose's Medicare-recorded volume has increased from 34 procedures in 2022 to 79 in the most recent data, a 132% increase over 3 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 105 procedures in 2023.
Does Dr. Penrose perform more than one type of joint replacement?
Yes. Dr. Penrose's Medicare data shows procedures in knee replacement (54 cases), hip replacement (25 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Penrose affiliated with?
According to CMS facility affiliation data, Dr. Penrose is affiliated with Franciscan Health Mooresville, Columbus Regional Hospital, Franciscan Health Indianapolis, Indiana University Health, Greene County General Hospital.
How does Dr. Penrose compare to other orthopedic surgeons in Indianapolis?
Among the 30 orthopedic surgeons in Indianapolis, Dr. Penrose ranks #11 by total Medicare procedure volume. The highest-volume surgeon in Indianapolis has 162 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Penrose practices?
Franciscan Health Mooresville (5 out of 5 CMS stars, hip/knee complication rate similar to national average); Columbus Regional Hospital (4 out of 5 CMS stars, hip/knee complication rate similar to national average); Franciscan Health Indianapolis (3 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 Indianapolis, Indiana
Dr. Penrose's 79 Medicare procedures are below the Indianapolis average of 121. The table below compares verified procedure volumes for orthopedic surgeons practicing in Indianapolis.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. George Vestermark | 162 | Hip, Knee |
| Dr. Joshua Carter | 146 | Hip, Knee |
| Dr. Daniel Gerow | 127 | Hip, Knee |
| Dr. Robert Meneghini | 123 | Hip, Knee |
| Dr. Christopher Pomeroy | 108 | Hip, Knee |
| Dr. Patrick Millikan | 105 | Hip, 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.