Dr. Abigail Hamilton, MD
Contact & Location
Tucson, AZ 85712
Dr. Abigail Hamilton is a board-certified orthopedic surgeon practicing in Tucson, Arizona. A Medicare provider since 2007, Dr. Hamilton has performed 20 Medicare-verified knee replacements (#118 in Arizona) and 13 shoulder replacements, for a combined total of 33 procedures.
In Arizona, Dr. Hamilton performs below average in knee (20 vs 49 avg), below average in shoulder (13 vs 31 avg).
Dr. Hamilton's reported Medicare volume is split between knee replacements (20 cases) and shoulder replacements (13 cases).
Beyond general orthopedic surgery, Dr. Hamilton holds additional credentials in Adult Reconstructive Orthopaedic Surgery and Sports Medicine, reflecting subspecialty training that may benefit patients with complex joint conditions.
Tucson is home to 27 orthopedic surgeons in the current Medicare dataset. Patients in the Tucson area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Hamilton extend back to 2015, covering 5 years of data. Over that period, recorded procedure volume increased from 15 to 33 in the most recent data, a 120% increase. This sustained growth reflects an expanding joint replacement practice.
Dr. Hamilton's 20 knee replacement procedures is below the national average of 45 among 6,599 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. Hamilton Compares
Procedure volume compared to the Arizona state average.
Volume Trend Analysis
Dr. Hamilton's Medicare-recorded procedure volume has trended upward over 5 years, increasing 120% from 15 procedures in 2015 to 33 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.
Home Safety: Creating Your Recovery SanctuaryRoom-by-room modifications, equipment recommendations, and fall-prevention strategies to prepare your home for a safe post-surgical recovery.
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. Hamilton
How does Dr. Hamilton's procedure volume compare to other Arizona surgeons?
Dr. Hamilton has performed 33 Medicare-verified joint replacement procedures. The Arizona average is 72 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Hamilton ranks #127 out of 191 orthopedic surgeons in Arizona.
What types of joint replacement does Dr. Hamilton perform?
Dr. Hamilton's Medicare data shows procedures in knee replacement (20 cases) and shoulder replacement (13 cases).
Are there other orthopedic surgeons near Dr. Hamilton in Tucson?
Yes. There are 27 orthopedic surgeons in Tucson 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. Hamilton 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. Hamilton's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 33 procedures shown here.
Has Dr. Hamilton's procedure volume changed over time?
Yes. Dr. Hamilton's Medicare-recorded volume has increased from 15 procedures in 2015 to 33 in the most recent data, a 120% increase over 5 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 33 procedures in 2024.
Does Dr. Hamilton perform more than one type of joint replacement?
Yes. Dr. Hamilton's Medicare data shows procedures in knee replacement (20 cases), shoulder replacement (13 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Hamilton affiliated with?
According to CMS facility affiliation data, Dr. Hamilton is affiliated with Tucson Medical Center.
How does Dr. Hamilton compare to other orthopedic surgeons in Tucson?
Among the 27 orthopedic surgeons in Tucson, Dr. Hamilton ranks #21 by total Medicare procedure volume. The highest-volume surgeon in Tucson has 213 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Hamilton practices?
Tucson Medical Center (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 Tucson, Arizona
Dr. Hamilton's 33 Medicare procedures are below the Tucson average of 146. The table below compares verified procedure volumes for orthopedic surgeons practicing in Tucson.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Russell Cohen | 213 | Hip, Knee |
| Dr. Michael Miller | 170 | Hip, Knee |
| Dr. John Wild | 169 | Hip, Knee |
| Dr. John Maltry | 160 | Hip, Knee |
| Dr. Edward Petrow | 145 | Hip, Knee |
| Dr. Chad Hills | 135 | 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.