Shoulder
Dr. Chunbong Ma, MD
Dr. Chunbong Ma is a board-certified orthopedic surgeon practicing in San Francisco, California. A Medicare provider since 2006, Dr. Ma has performed 50 Medicare-verified shoulder replacements, ranking #20 in California.
In California, Dr. Ma performs above average in shoulder (50 vs 30 avg).
Dr. Ma's Medicare data shows a focused shoulder replacement practice with 50 verified procedures. Surgeons who concentrate on a single procedure type often develop deep procedural expertise, though total practice volume may include additional procedures not captured in Medicare fee-for-service data.
San Francisco is home to 23 orthopedic surgeons in the current Medicare dataset. Patients in the San Francisco area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Ma extend back to 2013, covering 11 years of data. Over that period, recorded procedure volume increased from 29 to 50 in the most recent data, a 72% increase. This sustained growth reflects an expanding joint replacement practice.
Among 2,092 shoulder replacement surgeons tracked nationally, Dr. Ma's 50 verified procedures is above the national average of 28.
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. Ma Compares
Procedure volume compared to the California state average.
Contact & Location
San Francisco, CA 94143
Verified Case Volume Trends (2013-Current)
Volume Trend Analysis
Dr. Ma's Medicare-recorded procedure volume has trended upward over 11 years, increasing 72% from 29 procedures in 2013 to 50 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 Shoulder Replacement
If you are considering shoulder replacement surgery, these evidence-based guides can help you prepare and recover:
A 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.
Shoulder Replacement Recovery Overview
Recovery timelines vary by patient, but here is a general overview of what to expect after shoulder replacement surgery:
Individual recovery varies based on overall health, age, and adherence to physical therapy. View full shoulder replacement recovery guide and product recommendations
Frequently Asked Questions About Dr. Ma
How does Dr. Ma's procedure volume compare to other California surgeons?
Dr. Ma has performed 50 Medicare-verified joint replacement procedures. The California average is 65 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Ma ranks #262 out of 608 orthopedic surgeons in California.
What types of joint replacement does Dr. Ma perform?
Dr. Ma's reported Medicare volume is focused on shoulder replacement, with 50 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
How experienced is Dr. Ma with shoulder replacement surgery?
Dr. Ma ranks #20 in California for shoulder replacement with 50 Medicare-verified procedures. This high ranking among 608 state surgeons indicates significant experience with this specific procedure.
Are there other orthopedic surgeons near Dr. Ma in San Francisco?
Yes. There are 23 orthopedic surgeons in San Francisco 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 California surgeons.
What does the Medicare data for Dr. Ma 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. Ma's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 50 procedures shown here.
Has Dr. Ma's procedure volume changed over time?
Yes. Dr. Ma's Medicare-recorded volume has increased from 29 procedures in 2013 to 50 in the most recent data, a 72% increase over 11 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 56 procedures in 2018.
Which hospitals is Dr. Ma affiliated with?
According to CMS facility affiliation data, Dr. Ma is affiliated with Ucsf Medical Center, Sonoma Valley Hospital.
How does Dr. Ma compare to other orthopedic surgeons in San Francisco?
Among the 23 orthopedic surgeons in San Francisco, Dr. Ma ranks #10 by total Medicare procedure volume. The highest-volume surgeon in San Francisco has 162 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Ma practices?
Ucsf Medical Center (5 out of 5 CMS stars, hip/knee complication rate similar to national average); Sonoma Valley Hospital (1 out of 5 CMS stars, insufficient case volume for complication rate comparison). These are hospital-level quality metrics from CMS Hospital Compare and do not reflect individual surgeon outcomes.
Other Orthopedic Surgeons in San Francisco, California
Dr. Ma's 50 Medicare procedures are below the San Francisco average of 111. The table below compares verified procedure volumes for orthopedic surgeons practicing in San Francisco.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Jeffrey Barry | 162 | Hip, Knee |
| Dr. Peter Callander | 140 | Hip, Knee |
| Dr. Derek Ward | 133 | Hip, Knee |
| Dr. Erik Hansen | 120 | Hip, Knee |
| Dr. James Kelly | 93 | Shoulder |
| Dr. Christopher Cox | 76 | Hip, Knee |
Patient Reviews & Ratings
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