Dr. Michael Azzoni, M.D.
Dr. Michael Azzoni is a board-certified orthopedic surgeon practicing in Gardner, Massachusetts. A Medicare provider since 2005, Dr. Azzoni has performed 31 Medicare-verified knee replacements (#99 in Massachusetts) and 12 hip replacements, for a combined total of 43 procedures.
In Massachusetts, Dr. Azzoni performs below average in knee (31 vs 51 avg), below average in hip (12 vs 44 avg).
Dr. Azzoni's reported Medicare volume is split between knee replacements (31 cases) and hip replacements (12 cases).
Beyond general orthopedic surgery, Dr. Azzoni holds additional credentials in Sports Medicine, reflecting subspecialty training that may benefit patients with complex joint conditions.
Gardner is home to 2 orthopedic surgeons in the current Medicare dataset. Patients in the Gardner area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Azzoni extend back to 2013, covering 11 years of data. Over that period, recorded procedure volume increased from 22 to 43 in the most recent data, a 95% increase. This sustained growth reflects an expanding joint replacement practice.
Dr. Azzoni's 31 knee replacement procedures is below the national average of 45 among 6,720 surgeons. Medicare data captures roughly a third of all joint replacements, so actual volume is likely higher.
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. Azzoni Compares
Procedure volume compared to the Massachusetts state average.
Contact & Location
Gardner, MA 01440
Verified Case Volume Trends (2013-Current)
Volume Trend Analysis
Dr. Azzoni's Medicare-recorded procedure volume has trended upward over 11 years, increasing 95% from 22 procedures in 2013 to 43 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.
Questions to Ask Your Surgeon Before Joint ReplacementA practical checklist of questions covering experience, technique, hospital choice, and recovery expectations to discuss during your surgical consultation.
Nutrition and Recovery After Joint ReplacementHow protein intake, anti-inflammatory foods, hydration, and targeted supplements support bone healing and tissue repair after surgery.
Outpatient Joint Replacement: A Medicare GuideHow outpatient joint replacement works under Medicare, including eligibility criteria, cost differences, and what to expect with same-day discharge.
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. Azzoni
How does Dr. Azzoni's procedure volume compare to other Massachusetts surgeons?
Dr. Azzoni has performed 43 Medicare-verified joint replacement procedures. The Massachusetts average is 74 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Azzoni ranks #116 out of 202 orthopedic surgeons in Massachusetts.
What types of joint replacement does Dr. Azzoni perform?
Dr. Azzoni's Medicare data shows procedures in knee replacement (31 cases) and hip replacement (12 cases).
Are there other orthopedic surgeons near Dr. Azzoni in Gardner?
Yes. There are 2 orthopedic surgeons in Gardner 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. Azzoni 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. Azzoni's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 43 procedures shown here.
Has Dr. Azzoni's procedure volume changed over time?
Yes. Dr. Azzoni's Medicare-recorded volume has increased from 22 procedures in 2013 to 43 in the most recent data, a 95% increase over 11 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 51 procedures in 2017.
Does Dr. Azzoni perform more than one type of joint replacement?
Yes. Dr. Azzoni's Medicare data shows procedures in knee replacement (31 cases), hip replacement (12 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Azzoni affiliated with?
According to CMS facility affiliation data, Dr. Azzoni is affiliated with Heywood Hospital -.
What are the quality ratings for hospitals where Dr. Azzoni practices?
Heywood Hospital - (3 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 Gardner, Massachusetts
Dr. Azzoni's 43 Medicare procedures are above the Gardner average of 40. The table below compares verified procedure volumes for orthopedic surgeons practicing in Gardner.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Jared Toman | 36 | Hip, Knee |
Patient Reviews & Ratings
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