Dr. Michael Dersam is a board-certified orthopedic surgeon practicing in Phoenix, Arizona. In 2023, Dr. Dersam performed 13 Medicare-verified shoulder replacements (#52 in Arizona) and 11 knee replacements, for a combined total of 24 procedures.
Dr. Dersam recorded 24 Medicare fee-for-service procedures in 2023. Medicare data represents approximately one-third of all joint replacements nationwide, so these counts reflect only a portion of a surgeon's full practice. Arizona has 190 orthopedic surgeons in the current dataset.
Dr. Dersam's reported Medicare volume is split between shoulder replacements (13 cases) and knee replacements (11 cases).
Phoenix is home to 53 orthopedic surgeons in the current Medicare dataset. Patients in the Phoenix area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Verified Medicare Cases (2023)
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.
Hospital Affiliations
Verified Case Volume Trends (2013-2023)
Frequently Asked Questions About Dr. Dersam
How does Dr. Dersam's procedure volume compare to other Arizona surgeons?
In 2023, Dr. Dersam performed 24 Medicare-verified joint replacement procedures. The Arizona average is 67 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Dersam ranks #144 out of 190 orthopedic surgeons in Arizona.
What types of joint replacement does Dr. Dersam perform?
Dr. Dersam's Medicare data shows procedures in shoulder replacement (13 cases) and knee replacement (11 cases).
Are there other orthopedic surgeons near Dr. Dersam in Phoenix?
Yes. There are 53 orthopedic surgeons in Phoenix 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. Dersam represent?
The procedure counts shown are based on Medicare Part B fee-for-service claims data for 2023, published by the Centers for Medicare and Medicaid Services (CMS). This captures approximately 33–37% of all joint replacements performed nationally. Dr. Dersam's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 24 procedures shown here.
Other Orthopedic Surgeons in Phoenix, Arizona
Compare Dr. Dersam's volume with other surgeons practicing in Phoenix.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Steven Werner | 227 | Hip, Knee |
| Dr. Steven Hattrup | 157 | Shoulder |
| Dr. Lige Kaplan | 142 | Hip, Knee |
| Dr. Michael Wilmink | 140 | Hip, Knee |
| Dr. Mark Spangehl | 138 | Hip, Knee |
| Dr. Christina Khoury | 137 | Hip, Knee |
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Phoenix, AZ 85013