Dr. Mark Allen, D.O.
Dr. Mark Allen is a board-certified orthopedic surgeon practicing in Glendale, Arizona. A Medicare provider since 2010, Dr. Allen has performed 21 Medicare-verified knee replacements (#114 in Arizona) and 20 hip replacements, for a combined total of 41 procedures.
In Arizona, Dr. Allen performs below average in knee (21 vs 49 avg), below average in hip (20 vs 37 avg).
Dr. Allen's reported Medicare volume is split between knee replacements (21 cases) and hip replacements (20 cases).
Beyond general orthopedic surgery, Dr. Allen holds additional credentials in Adult Reconstructive Orthopaedic Surgery, reflecting subspecialty training that may benefit patients with complex joint conditions.
Glendale is home to 4 orthopedic surgeons in the current Medicare dataset. Patients in the Glendale area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Dr. Allen's Medicare record spans 7 years from 2017 through 2023. Procedure volume has remained consistent during that period, ranging from 13 to 41 procedures per year, reflecting a steady joint replacement practice.
Dr. Allen's 21 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. Allen Compares
Procedure volume compared to the Arizona state average.
Contact & Location
Glendale, AZ 85308
Verified Case Volume Trends (2013-Current)
Volume Trend Analysis
Dr. Allen's procedure volume has been consistent across 7 years of Medicare data, ranging from 13 to 41 procedures per year. This stability suggests a well-established joint replacement practice.
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.
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.
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. Allen
How does Dr. Allen's procedure volume compare to other Arizona surgeons?
Dr. Allen has performed 41 Medicare-verified joint replacement procedures. The Arizona average is 68 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Allen ranks #106 out of 193 orthopedic surgeons in Arizona.
What types of joint replacement does Dr. Allen perform?
Dr. Allen's Medicare data shows procedures in knee replacement (21 cases) and hip replacement (20 cases).
Are there other orthopedic surgeons near Dr. Allen in Glendale?
Yes. There are 4 orthopedic surgeons in Glendale 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 Arizona surgeons.
What does the Medicare data for Dr. Allen 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. Allen's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 41 procedures shown here.
Has Dr. Allen's procedure volume changed over time?
Dr. Allen's procedure volume has been relatively stable over 7 years of Medicare data, ranging from 13 to 41 procedures per year between 2017 and 2023. Consistent volume over multiple years reflects a steady joint replacement practice.
Does Dr. Allen perform more than one type of joint replacement?
Yes. Dr. Allen's Medicare data shows procedures in knee replacement (21 cases), hip replacement (20 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Allen affiliated with?
According to CMS facility affiliation data, Dr. Allen is affiliated with Abrazo Arrowhead Campus.
How does Dr. Allen compare to other orthopedic surgeons in Glendale?
Among the 4 orthopedic surgeons in Glendale, Dr. Allen ranks #3 by total Medicare procedure volume. Dr. Allen is among the highest-volume surgeons in Glendale.
What are the quality ratings for hospitals where Dr. Allen practices?
Abrazo Arrowhead Campus (2 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 Glendale, Arizona
Dr. Allen's 41 Medicare procedures are below the Glendale average of 55. The table below compares verified procedure volumes for orthopedic surgeons practicing in Glendale.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Brent Hansen | 89 | Hip, Knee, Shoulder |
| Dr. Delbert Maddox | 51 | Knee |
| Dr. David Burk | 37 | Hip, Knee |
Patient Reviews & Ratings
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