Dr. Michael O'sullivan, MD
Dr. Michael O'sullivan is a board-certified orthopedic surgeon practicing in Springfield, Massachusetts. A Medicare provider since 2013, Dr. O'sullivan has performed 93 Medicare-verified knee replacements (#19 in Massachusetts) and 68 hip replacements, for a combined total of 161 procedures.
In Massachusetts, Dr. O'sullivan performs above average in knee (93 vs 51 avg), above average in hip (68 vs 44 avg).
Dr. O'sullivan's reported Medicare volume is split between knee replacements (93 cases) and hip replacements (68 cases).
Springfield is home to 8 orthopedic surgeons in the current Medicare dataset. Patients in the Springfield area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. O'sullivan extend back to 2019, covering 5 years of data. Over that period, recorded procedure volume increased from 37 to 161 in the most recent data, a 335% increase. This sustained growth reflects an expanding joint replacement practice.
Among 6,720 knee replacement surgeons tracked nationally, Dr. O'sullivan's 93 verified procedures is more than 2x the national average of 45.
Verified Medicare Cases
How is this estimated?
Medicare Part B fee-for-service claims represent approximately 33–37% of all joint replacements performed nationally (source: CMS data, AJRR). This range estimates the surgeon's total practice volume across all payers. The verified Medicare count above is the definitive, audited figure.
How Dr. O'sullivan Compares
Procedure volume compared to the Massachusetts state average.
Contact & Location
Springfield, MA 01107
Verified Case Volume Trends (2013-Current)
Volume Trend Analysis
Dr. O'sullivan's Medicare-recorded procedure volume has trended upward over 5 years, increasing 335% from 37 procedures in 2019 to 161 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. O'sullivan
How does Dr. O'sullivan's procedure volume compare to other Massachusetts surgeons?
Dr. O'sullivan has performed 161 Medicare-verified joint replacement procedures. This is more than 2x the Massachusetts average of 74 procedures per surgeon. Dr. O'sullivan ranks #20 out of 202 orthopedic surgeons in Massachusetts.
What types of joint replacement does Dr. O'sullivan perform?
Dr. O'sullivan's Medicare data shows procedures in knee replacement (93 cases) and hip replacement (68 cases).
How experienced is Dr. O'sullivan with knee replacement surgery?
Dr. O'sullivan ranks #19 in Massachusetts for knee replacement with 93 Medicare-verified procedures. This high ranking among 202 state surgeons indicates significant experience with this specific procedure.
Are there other orthopedic surgeons near Dr. O'sullivan in Springfield?
Yes. There are 8 orthopedic surgeons in Springfield 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 Massachusetts surgeons.
What does the Medicare data for Dr. O'sullivan represent?
The procedure counts shown are based on the most recent Medicare Part B fee-for-service claims data, published by the Centers for Medicare and Medicaid Services (CMS). This captures approximately 33–37% of all joint replacements performed nationally. Dr. O'sullivan's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 161 procedures shown here.
Has Dr. O'sullivan's procedure volume changed over time?
Yes. Dr. O'sullivan's Medicare-recorded volume has increased from 37 procedures in 2019 to 161 in the most recent data, a 335% increase over 5 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 161 procedures in 2023.
Does Dr. O'sullivan perform more than one type of joint replacement?
Yes. Dr. O'sullivan's Medicare data shows procedures in knee replacement (93 cases), hip replacement (68 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. O'sullivan affiliated with?
According to CMS facility affiliation data, Dr. O'sullivan is affiliated with Baystate Medical Center, Baystate Franklin Medical Center, Baystate Noble Hospital, Cooley Dickinson Hospital Inc,The.
How does Dr. O'sullivan compare to other orthopedic surgeons in Springfield?
Among the 8 orthopedic surgeons in Springfield, Dr. O'sullivan ranks #4 by total Medicare procedure volume. The highest-volume surgeon in Springfield has 275 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. O'sullivan practices?
Baystate Medical Center (1 out of 5 CMS stars, hip/knee complication rate similar to national average); Baystate Franklin Medical Center (4 out of 5 CMS stars); Baystate Noble Hospital (2 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 Springfield, Massachusetts
Dr. O'sullivan's 161 Medicare procedures are above the Springfield average of 147. The table below compares verified procedure volumes for orthopedic surgeons practicing in Springfield.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Andrew Lehman | 275 | Hip, Knee |
| Dr. Stephen Kelly | 269 | Hip, Knee |
| Dr. Alexander Brothers | 212 | Hip, Knee |
| Dr. Jennie Garver | 60 | Shoulder |
| Dr. John Corsetti | 27 | Shoulder |
| Dr. Martin Luber | 27 | Shoulder |
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