Dr. Mark Dillon, M.D.
Contact & Location
317-962-6467
Indianapolis, IN 46202
Philadelphia, PA 19104
Dr. Dillon performs more shoulder replacement procedures than 88% of orthopedic surgeons in Indiana, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #8 of 69 ranked shoulder surgeons in Indiana.
About Dr. Dillon
Practice. Dr. Mark Dillon is a board-certified orthopedic surgeon practicing in Indianapolis, Indiana. The latest annual CMS data records 38 shoulder replacements. That is #8 in Indiana for shoulder replacement. Dr. Dillon also holds credentials in Adult Reconstructive Orthopaedic Surgery. A Medicare provider since 2006.
Trend. Medicare records run from 2022 to 2024, 3 years. Volume rose from 21 procedures a year to 38, up 81%.
National context. Among 2,217 shoulder replacement surgeons tracked nationally, 38 procedures is above the national average of 29.
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 | Shoulder Replacement |
|---|---|
| 2013 | 0 |
| 2014 | 0 |
| 2015 | 0 |
| 2016 | 0 |
| 2017 | 0 |
| 2018 | 0 |
| 2019 | 0 |
| 2020 | 0 |
| 2021 | 0 |
| 2022 | 21 |
| 2023 | 30 |
| 2024 | 38 |
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 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. Dillon Compares
Procedure volume compared to the Indiana state average.
Volume Trend Analysis
Dr. Dillon's Medicare-recorded procedure volume has trended upward over 3 years, increasing 81% from 21 procedures in 2022 to 38 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:
Evidence-based exercises and lifestyle adjustments that can improve surgical outcomes and speed recovery when started weeks before your procedure.
Home Safety: Creating Your Recovery SanctuaryRoom-by-room modifications, equipment recommendations, and fall-prevention strategies to prepare your home for a safe post-surgical recovery.
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.
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. Dillon
How does Dr. Dillon's procedure volume compare to other Indiana surgeons?
Dr. Dillon has performed 38 Medicare-verified joint replacement procedures. The Indiana average is 60 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Dillon ranks #142 out of 224 orthopedic surgeons in Indiana.
What types of joint replacement does Dr. Dillon perform?
Dr. Dillon's reported Medicare volume is focused on shoulder replacement, with 38 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
How experienced is Dr. Dillon with shoulder replacement surgery?
Dr. Dillon ranks #8 in Indiana for shoulder replacement with 38 Medicare-verified procedures. This high ranking among 224 state surgeons indicates significant experience with this specific procedure.
Are there other orthopedic surgeons near Dr. Dillon 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. Dillon 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 29% to 37% for shoulder replacement, which puts Dr. Dillon's total volume across all insurers at roughly 100 to 130 procedures against the 38 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. Dillon's procedure volume changed over time?
Yes. Dr. Dillon's Medicare-recorded volume has increased from 21 procedures in 2022 to 38 in the most recent data, a 81% increase over 3 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 38 procedures in 2024.
Which hospitals is Dr. Dillon affiliated with?
According to CMS facility affiliation data, Dr. Dillon is affiliated with Indiana University Health, Indiana University Health North Hospital.
How does Dr. Dillon compare to other orthopedic surgeons in Indianapolis?
Among the 30 orthopedic surgeons in Indianapolis, Dr. Dillon ranks #24 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. Dillon practices?
Indiana University Health (2 out of 5 CMS stars, hip/knee complication rate similar to national average); Indiana University Health North 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 Indianapolis, Indiana
Dr. Dillon's 38 Medicare procedures are below the Indianapolis average of 116. 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.