Dr. Marc Kowalsky, M.D.
Contact & Location
203-869-1145
Greenwich, CT 06831
Dr. Kowalsky performs more shoulder replacement procedures than 23% of orthopedic surgeons in Connecticut, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #20 of 26 ranked shoulder surgeons in Connecticut.
About Dr. Kowalsky
Practice. Dr. Marc Kowalsky is a board-certified orthopedic surgeon practicing in Greenwich, Connecticut. The latest annual CMS data records 18 shoulder replacements. That is #20 in Connecticut for shoulder replacement. A Medicare provider since 2008.
Trend. Medicare records run from 2015 to 2024, 7 years. Volume rose from 12 procedures a year to 18, up 50%.
National context. Among 2,217 shoulder replacement surgeons tracked nationally, 18 procedures is below the national average of 29. Medicare covers part of all joint replacements, so true volume is likely higher.
Local context. Greenwich has 9 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 | 12 |
| 2016 | 11 |
| 2017 | 20 |
| 2018 | 14 |
| 2019 | 22 |
| 2020 | 0 |
| 2021 | 19 |
| 2022 | 0 |
| 2023 | 0 |
| 2024 | 18 |
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. Kowalsky Compares
Procedure volume compared to the Connecticut state average.
Volume Trend Analysis
Dr. Kowalsky's Medicare-recorded procedure volume has trended upward over 7 years, increasing 50% from 12 procedures in 2015 to 18 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.
Recovery Timeline: Week-by-Week ExpectationsA detailed week-by-week guide covering pain levels, mobility milestones, physical therapy progression, and when to expect a return to daily activities.
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. Kowalsky
How does Dr. Kowalsky's procedure volume compare to other Connecticut surgeons?
Dr. Kowalsky has performed 18 Medicare-verified joint replacement procedures. The Connecticut average is 49 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Kowalsky ranks #73 out of 94 orthopedic surgeons in Connecticut.
What types of joint replacement does Dr. Kowalsky perform?
Dr. Kowalsky's reported Medicare volume is focused on shoulder replacement, with 18 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
How experienced is Dr. Kowalsky with shoulder replacement surgery?
Dr. Kowalsky ranks #20 in Connecticut for shoulder replacement with 18 Medicare-verified procedures. This high ranking among 94 state surgeons indicates significant experience with this specific procedure.
Are there other orthopedic surgeons near Dr. Kowalsky in Greenwich?
Yes. There are 9 orthopedic surgeons in Greenwich 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 Connecticut surgeons.
What does the Medicare data for Dr. Kowalsky 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. Kowalsky's total volume across all insurers at roughly 50 to 60 procedures against the 18 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. Kowalsky's procedure volume changed over time?
Yes. Dr. Kowalsky's Medicare-recorded volume has increased from 12 procedures in 2015 to 18 in the most recent data, a 50% increase over 7 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 22 procedures in 2019.
Which hospitals is Dr. Kowalsky affiliated with?
According to CMS facility affiliation data, Dr. Kowalsky is affiliated with Greenwich Hospital Association -.
How does Dr. Kowalsky compare to other orthopedic surgeons in Greenwich?
Among the 9 orthopedic surgeons in Greenwich, Dr. Kowalsky ranks #8 by total Medicare procedure volume. The highest-volume surgeon in Greenwich has 116 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Kowalsky practices?
Greenwich Hospital Association - (4 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 Greenwich, Connecticut
Dr. Kowalsky's 18 Medicare procedures are below the Greenwich average of 69. The table below compares verified procedure volumes for orthopedic surgeons practicing in Greenwich.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Jonathan Berliner | 116 | Hip, Knee |
| Dr. Michael Held | 79 | Hip, Knee |
| Dr. Kevin Choo | 78 | Hip, Knee |
| Dr. Brian Kavanagh | 73 | Hip, Knee |
| Dr. Seth Miller | 73 | Shoulder |
| Dr. Francis Ennis | 49 | 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.