Dr. Alexander Riordan, M.D.
Contact & Location
Oak Creek, WI 53154
Dr. Alexander Riordan is a board-certified orthopedic surgeon practicing in Oak Creek, Wisconsin. A Medicare provider since 2012, Dr. Riordan has performed 12 Medicare-verified hip replacements, ranking #106 in Wisconsin.
In Wisconsin, Dr. Riordan performs below average in hip (12 vs 29 avg).
Dr. Riordan's Medicare data shows a focused hip replacement practice with 12 verified procedures. Surgeons who concentrate on a single procedure type often develop deep procedural expertise, though total practice volume may include additional procedures not captured in Medicare fee-for-service data.
Dr. Riordan is the only orthopedic surgeon in Oak Creek represented in the current Medicare dataset, serving as the primary local option for patients considering joint replacement surgery in the area.
Dr. Riordan's Medicare data spans 6 years, beginning in 2017. Volume peaked at 42 procedures in 2018 before settling at 12 in the most recent data. Changes in Medicare reporting, payer mix shifts, or practice focus adjustments can all influence year-to-year volume.
Dr. Riordan's 12 hip replacement procedures is below the national average of 36 among 4,532 surgeons. Medicare data captures roughly a third of all joint replacements, so actual volume is likely higher.
Verified Case Volume Trends (2013-Current)
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. Riordan Compares
Procedure volume compared to the Wisconsin state average.
Volume Trend Analysis
Dr. Riordan's recorded volume peaked at 42 procedures in 2018 and stood at 12 in the most recent data. Year-to-year variation can reflect changes in payer mix, practice scope, or Medicare billing patterns.
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 Hip Replacement
If you are considering hip replacement surgery, these evidence-based guides can help you prepare and recover:
Understanding the progression from conservative treatments to surgical intervention, and how to determine when hip replacement becomes the right choice.
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.
Pain Management After Joint ReplacementA comprehensive guide to managing post-surgical pain through medication, physical therapy, cold therapy, and non-pharmacological strategies.
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.
Hip Replacement Recovery Overview
Recovery timelines vary by patient, but here is a general overview of what to expect after hip replacement surgery:
Individual recovery varies based on overall health, age, and adherence to physical therapy. View full hip replacement recovery guide and product recommendations
Frequently Asked Questions About Dr. Riordan
How does Dr. Riordan's procedure volume compare to other Wisconsin surgeons?
Dr. Riordan has performed 12 Medicare-verified joint replacement procedures. The Wisconsin average is 51 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Riordan ranks #173 out of 189 orthopedic surgeons in Wisconsin.
What types of joint replacement does Dr. Riordan perform?
Dr. Riordan's reported Medicare volume is focused on hip replacement, with 12 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
Where is Dr. Riordan's practice located?
Dr. Riordan practices in Oak Creek, Wisconsin. The office is located at 200 E Ryan Rd, Oak Creek, WI 53154. Patients in the surrounding area can consult Dr. Riordan for joint replacement evaluation.
What does the Medicare data for Dr. Riordan 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. Riordan's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 12 procedures shown here.
Has Dr. Riordan's procedure volume changed over time?
Dr. Riordan's Medicare-recorded volume peaked at 42 procedures in 2018 and was 12 in the most recent data. Volume fluctuations can reflect changes in payer mix, practice focus, or Medicare reporting rather than a change in overall surgical activity.
Which hospitals is Dr. Riordan affiliated with?
According to CMS facility affiliation data, Dr. Riordan is affiliated with Aurora St Lukes Medical Center.
What are the quality ratings for hospitals where Dr. Riordan practices?
Aurora St Lukes Medical Center (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.
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.