Dr. Antonios Tsismenakis, MD
Contact & Location
207-307-8910
Bangor, ME 04401
About Dr. Tsismenakis
Dr. Antonios Tsismenakis is a board-certified orthopedic surgeon practicing in Bangor, Maine. A Medicare provider since 2011, Dr. Tsismenakis performed 44 Medicare-verified knee replacements (#8 in Maine) and 32 hip replacements in the latest annual CMS data, for a combined total of 76 procedures.
In Maine, Dr. Tsismenakis performs near the state average in knee (44 vs 44), near the state average in hip (32 vs 31).
Dr. Tsismenakis's reported Medicare volume is split between knee replacements (44 cases) and hip replacements (32 cases).
Bangor is home to 6 orthopedic surgeons in the current Medicare dataset. Patients in the Bangor area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Tsismenakis extend back to 2018, covering 7 years of data. Over that period, recorded procedure volume increased from 44 to 76 in the most recent data, a 73% increase. This sustained growth reflects an expanding joint replacement practice.
Among 6,599 knee replacement surgeons tracked nationally, Dr. Tsismenakis's 44 verified procedures is near the national average of 45.
Verified Case Volume Trends (2013-Current)
| Year | Hip Replacement | Knee Replacement |
|---|---|---|
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 26 | 18 |
| 2019 | 36 | 34 |
| 2020 | 27 | 20 |
| 2021 | 35 | 24 |
| 2022 | 38 | 34 |
| 2023 | 38 | 38 |
| 2024 | 32 | 44 |
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. Tsismenakis Compares
Procedure volume compared to the Maine state average.
Volume Trend Analysis
Dr. Tsismenakis's Medicare-recorded procedure volume has trended upward over 7 years, increasing 73% from 44 procedures in 2018 to 76 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.
What to Expect on the Day of SurgeryA step-by-step walkthrough of your surgical day, from pre-op preparation through anesthesia, the procedure itself, and the first hours of recovery.
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 Coverage for Joint ReplacementWhat Medicare Part A and Part B cover for joint replacement surgery, including hospital stays, surgeon fees, anesthesia, and physical therapy.
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. Tsismenakis
How does Dr. Tsismenakis's procedure volume compare to other Maine surgeons?
Dr. Tsismenakis has performed 76 Medicare-verified joint replacement procedures. This is in line with the Maine average of 52 procedures per surgeon. Dr. Tsismenakis ranks #7 out of 43 orthopedic surgeons in Maine.
What types of joint replacement does Dr. Tsismenakis perform?
Dr. Tsismenakis's Medicare data shows procedures in knee replacement (44 cases) and hip replacement (32 cases).
How experienced is Dr. Tsismenakis with knee replacement surgery?
Dr. Tsismenakis ranks #8 in Maine for knee replacement with 44 Medicare-verified procedures. This high ranking among 43 state surgeons indicates significant experience with this specific procedure.
Are there other orthopedic surgeons near Dr. Tsismenakis in Bangor?
Yes. There are 6 orthopedic surgeons in Bangor 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 Maine surgeons.
What does the Medicare data for Dr. Tsismenakis 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. Tsismenakis's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 76 procedures shown here.
Has Dr. Tsismenakis's procedure volume changed over time?
Yes. Dr. Tsismenakis's Medicare-recorded volume has increased from 44 procedures in 2018 to 76 in the most recent data, a 73% increase over 7 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 76 procedures in 2023.
Does Dr. Tsismenakis perform more than one type of joint replacement?
Yes. Dr. Tsismenakis's Medicare data shows procedures in knee replacement (44 cases), hip replacement (32 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Tsismenakis affiliated with?
According to CMS facility affiliation data, Dr. Tsismenakis is affiliated with St Joseph Hospital, Northern Light Sebasticook Valley Hospital, Northern Light Maine Coast Hospital, Northern Light Eastern Maine Medical Center, Northern Light Blue Hill Memorial Hospital.
How does Dr. Tsismenakis compare to other orthopedic surgeons in Bangor?
Among the 6 orthopedic surgeons in Bangor, Dr. Tsismenakis ranks #2 by total Medicare procedure volume. Dr. Tsismenakis is among the highest-volume surgeons in Bangor.
What are the quality ratings for hospitals where Dr. Tsismenakis practices?
St Joseph Hospital (3 out of 5 CMS stars, hip/knee complication rate similar to national average); Northern Light Maine Coast 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 Bangor, Maine
Dr. Tsismenakis's 76 Medicare procedures are below the Bangor average of 84. The table below compares verified procedure volumes for orthopedic surgeons practicing in Bangor.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Jason Lang | 243 | Hip, Knee |
| Dr. Jacob Brooks | 71 | Hip, Knee |
| Dr. Stephen Walsh | 64 | Hip, Knee |
| Dr. Jessica Aronowitz | 36 | Shoulder |
| Dr. Megan Richards | 15 | Hip |
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.