Dr. Daniel Sun, M.D.
Contact & Location
Boston, MA 02111
Dr. Daniel Sun is a board-certified orthopedic surgeon practicing in Boston, Massachusetts. A Medicare provider since 2015, Dr. Sun has performed 23 Medicare-verified knee replacements (#116 in Massachusetts) and 14 hip replacements, for a combined total of 37 procedures.
In Massachusetts, Dr. Sun performs below average in knee (23 vs 50 avg), below average in hip (14 vs 44 avg).
Dr. Sun's reported Medicare volume is split between knee replacements (23 cases) and hip replacements (14 cases).
Boston is home to 50 orthopedic surgeons in the current Medicare dataset. Patients in the Boston area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Dr. Sun's Medicare data spans 5 years, beginning in 2020. Volume peaked at 124 procedures in 2021 before settling at 37 in the most recent data. Changes in Medicare reporting, payer mix shifts, or practice focus adjustments can all influence year-to-year volume.
Dr. Sun's 23 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. Sun Compares
Procedure volume compared to the Massachusetts state average.
Volume Trend Analysis
Dr. Sun's recorded volume peaked at 124 procedures in 2021 and stood at 37 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 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.
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.
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. Sun
How does Dr. Sun's procedure volume compare to other Massachusetts surgeons?
Dr. Sun has performed 37 Medicare-verified joint replacement procedures. The Massachusetts average is 74 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Sun ranks #128 out of 203 orthopedic surgeons in Massachusetts.
What types of joint replacement does Dr. Sun perform?
Dr. Sun's Medicare data shows procedures in knee replacement (23 cases) and hip replacement (14 cases).
Are there other orthopedic surgeons near Dr. Sun in Boston?
Yes. There are 50 orthopedic surgeons in Boston 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 Massachusetts surgeons.
What does the Medicare data for Dr. Sun 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. Sun's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 37 procedures shown here.
Has Dr. Sun's procedure volume changed over time?
Dr. Sun's Medicare-recorded volume peaked at 124 procedures in 2021 and was 37 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.
Does Dr. Sun perform more than one type of joint replacement?
Yes. Dr. Sun's Medicare data shows procedures in knee replacement (23 cases), hip replacement (14 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Sun affiliated with?
According to CMS facility affiliation data, Dr. Sun is affiliated with Tufts Medical Center, Melrosewakefield Healthcare.
How does Dr. Sun compare to other orthopedic surgeons in Boston?
Among the 50 orthopedic surgeons in Boston, Dr. Sun ranks #40 by total Medicare procedure volume. The highest-volume surgeon in Boston has 305 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Sun practices?
Tufts Medical Center (3 out of 5 CMS stars, hip/knee complication rate similar to national average); Melrosewakefield Healthcare (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 Boston, Massachusetts
Dr. Sun's 37 Medicare procedures are below the Boston average of 185. The table below compares verified procedure volumes for orthopedic surgeons practicing in Boston.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Carl Talmo | 305 | Hip, Knee |
| Dr. Young-Min Kwon | 235 | Hip, Knee |
| Dr. James Bono | 204 | Hip, Knee |
| Dr. Nicholas Pagani | 178 | Hip, Knee |
| Dr. Eric Smith | 170 | Hip, Knee |
| Dr. Dennis Burke | 169 | 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.