Dr. Cassandra Lange, M.D.
Contact & Location
319-449-4763
Cedar Rapids, IA 52402
Dr. Lange performs more hip replacement procedures than 83% of orthopedic surgeons in Iowa, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #11 of 65 ranked hip surgeons in Iowa.
About Dr. Lange
Practice. Dr. Cassandra Lange is an orthopedic surgeon practicing in Cedar Rapids, Iowa. The latest annual CMS data records 62 hip replacements and 58 knee replacements, 120 procedures in all. That is #11 in Iowa for hip replacement. A Medicare provider since 2005.
Trend. Medicare records run from 2013 to 2024, 12 years. Volume rose from 94 procedures a year to 120, up 28%.
National context. Among 4,542 hip replacement surgeons tracked nationally, 62 procedures is above the national average of 36.
Local context. Cedar Rapids has 12 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 |
|---|---|---|
| 2013 | 46 | 48 |
| 2014 | 71 | 58 |
| 2015 | 64 | 64 |
| 2016 | 70 | 63 |
| 2017 | 70 | 39 |
| 2018 | 69 | 32 |
| 2019 | 70 | 38 |
| 2020 | 38 | 31 |
| 2021 | 55 | 38 |
| 2022 | 60 | 48 |
| 2023 | 56 | 47 |
| 2024 | 62 | 58 |
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 25% to 33% for hip replacement, 23% to 28% for knee 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. Lange Compares
Procedure volume compared to the Iowa state average.
Volume Trend Analysis
Dr. Lange's Medicare-recorded procedure volume has trended upward over 12 years, increasing 28% from 94 procedures in 2013 to 120 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 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.
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.
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.
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.
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. Lange
How does Dr. Lange's procedure volume compare to other Iowa surgeons?
Dr. Lange has performed 120 Medicare-verified joint replacement procedures. This is significantly above the Iowa average of 73 procedures per surgeon. Dr. Lange ranks #18 out of 105 orthopedic surgeons in Iowa.
What types of joint replacement does Dr. Lange perform?
Dr. Lange's Medicare data shows procedures in hip replacement (62 cases) and knee replacement (58 cases).
How experienced is Dr. Lange with hip replacement surgery?
Dr. Lange ranks #11 in Iowa for hip replacement with 62 Medicare-verified procedures. This high ranking among 105 state surgeons indicates significant experience with this specific procedure.
Are there other orthopedic surgeons near Dr. Lange in Cedar Rapids?
Yes. There are 12 orthopedic surgeons in Cedar Rapids 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 Iowa surgeons.
What does the Medicare data for Dr. Lange 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 25% to 33% for hip replacement, 23% to 28% for knee replacement, which puts Dr. Lange's total volume across all insurers at roughly 400 to 500 procedures against the 120 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. Lange's procedure volume changed over time?
Yes. Dr. Lange's Medicare-recorded volume has increased from 94 procedures in 2013 to 120 in the most recent data, a 28% increase over 12 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 133 procedures in 2016.
Does Dr. Lange perform more than one type of joint replacement?
Yes. Dr. Lange's Medicare data shows procedures in hip replacement (62 cases), knee replacement (58 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Lange affiliated with?
According to CMS facility affiliation data, Dr. Lange is affiliated with Mercy Medical Center - Cedar Rapids, St Lukes Hospital, Regional Medical Center, Jones Regional Medical Center, Buchanan County Health Center.
How does Dr. Lange compare to other orthopedic surgeons in Cedar Rapids?
Among the 12 orthopedic surgeons in Cedar Rapids, Dr. Lange ranks #3 by total Medicare procedure volume. Dr. Lange is among the highest-volume surgeons in Cedar Rapids.
What are the quality ratings for hospitals where Dr. Lange practices?
Mercy Medical Center - Cedar Rapids (3 out of 5 CMS stars, hip/knee complication rate similar to national average); St Lukes Hospital (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.
Other Orthopedic Surgeons in Cedar Rapids, Iowa
Dr. Lange's 120 Medicare procedures are above the Cedar Rapids average of 104. The table below compares verified procedure volumes for orthopedic surgeons practicing in Cedar Rapids.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Sandeep Munjal | 198 | Hip, Knee |
| Dr. Jeffrey Nassif | 139 | Hip, Knee, Shoulder |
| Dr. Omar Akhtar | 98 | Hip, Knee |
| Dr. Kyle Switzer | 61 | Knee |
| Dr. John Hart | 56 | Knee, Shoulder |
| Dr. Andrea Stitgen Policano | 54 | Hip, Knee |
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.