Dr. John Day, M.D.
Contact & Location
770-427-5717
Marietta, GA 30060
Dr. Day performs more knee replacement procedures than 84% of orthopedic surgeons in Georgia, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #32 of 203 ranked knee surgeons in Georgia.
About Dr. Day
Practice. Dr. John Day is a board-certified orthopedic surgeon practicing in Marietta, Georgia. The latest annual CMS data records 62 knee replacements, 50 hip replacements, and 11 shoulder replacements, 123 procedures in all. That is #32 in Georgia for knee replacement.
Trend. Medicare records run from 2013 to 2024, 12 years. Volume rose from 57 procedures a year to 123, up 116%.
National context. Among 6,612 knee replacement surgeons tracked nationally, 62 procedures is above the national average of 45.
Local context. Marietta 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 | Shoulder Replacement |
|---|---|---|---|
| 2013 | 17 | 26 | 14 |
| 2014 | 16 | 25 | 18 |
| 2015 | 32 | 27 | 18 |
| 2016 | 35 | 38 | 24 |
| 2017 | 64 | 53 | 21 |
| 2018 | 48 | 52 | 12 |
| 2019 | 49 | 48 | 16 |
| 2020 | 46 | 42 | 11 |
| 2021 | 47 | 32 | 13 |
| 2022 | 49 | 39 | 15 |
| 2023 | 52 | 72 | 12 |
| 2024 | 50 | 62 | 11 |
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. Day Compares
Procedure volume compared to the Georgia state average.
Volume Trend Analysis
Dr. Day's Medicare-recorded procedure volume has trended upward over 12 years, increasing 116% from 57 procedures in 2013 to 123 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.
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.
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. Day
How does Dr. Day's procedure volume compare to other Georgia surgeons?
Dr. Day has performed 123 Medicare-verified joint replacement procedures. This is more than 2x the Georgia average of 55 procedures per surgeon. Dr. Day ranks #21 out of 245 orthopedic surgeons in Georgia.
What types of joint replacement does Dr. Day perform?
Dr. Day performs all three major joint replacement procedures: knee replacement (62 cases), hip replacement (50 cases), shoulder replacement (11 cases). This breadth indicates a comprehensive orthopedic joint replacement practice.
Are there other orthopedic surgeons near Dr. Day in Marietta?
Yes. There are 7 orthopedic surgeons in Marietta 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 Georgia surgeons.
What does the Medicare data for Dr. Day 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. Day's total volume across all insurers at roughly 400 to 510 procedures against the 123 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. Day's procedure volume changed over time?
Yes. Dr. Day's Medicare-recorded volume has increased from 57 procedures in 2013 to 123 in the most recent data, a 116% increase over 12 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 138 procedures in 2017.
Does Dr. Day perform more than one type of joint replacement?
Yes. Dr. Day's Medicare data shows procedures in knee replacement (62 cases), hip replacement (50 cases), shoulder replacement (11 cases). Performing all three major joint replacements places Dr. Day among the 5% of orthopedic surgeons nationally who cover hip, knee, and shoulder arthroplasty.
Which hospitals is Dr. Day affiliated with?
According to CMS facility affiliation data, Dr. Day is affiliated with Wellstar Kennestone Regional Medical Center, Wellstar Paulding Medical Center.
How does Dr. Day compare to other orthopedic surgeons in Marietta?
Among the 7 orthopedic surgeons in Marietta, Dr. Day ranks #2 by total Medicare procedure volume. Dr. Day is among the highest-volume surgeons in Marietta.
What are the quality ratings for hospitals where Dr. Day practices?
Wellstar Kennestone Regional Medical Center (4 out of 5 CMS stars, hip/knee complication rate similar to national average); Wellstar Paulding Medical Center (4 out of 5 CMS stars). These are hospital-level quality metrics from CMS Hospital Compare and do not reflect individual surgeon outcomes.
Other Orthopedic Surgeons in Marietta, Georgia
Dr. Day's 123 Medicare procedures are above the Marietta average of 76. The table below compares verified procedure volumes for orthopedic surgeons practicing in Marietta.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Stephen Kim | 190 | Hip, Knee |
| Dr. Orrin Scott Swayze | 121 | Hip, Knee, Shoulder |
| Dr. John Pinski | 44 | Hip, Knee |
| Dr. Thomas McQuail | 25 | Hip, Knee |
| Dr. Nicolas Bonnaig | 15 | Shoulder |
| Dr. Richard Burris | 13 | 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.