Dr. David Prybyla, M.D.
Contact & Location
978-454-0706
North Chelmsford, MA 01863
Dr. Prybyla performs more knee replacement procedures than 88% of orthopedic surgeons in Massachusetts, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #18 of 160 ranked knee surgeons in Massachusetts.
About Dr. Prybyla
Practice. Dr. David Prybyla is a board-certified orthopedic surgeon practicing in North Chelmsford, Massachusetts. The latest annual CMS data records 99 knee replacements and 72 hip replacements, 171 procedures in all. That is #18 in Massachusetts for knee replacement. A Medicare provider since 2006.
Trend. Medicare records run from 2013 to 2024, 12 years. Volume rose from 101 procedures a year to 171, up 69%.
National context. Among 6,612 knee replacement surgeons tracked nationally, 99 procedures is more than 2x the national average of 45.
Local context. North Chelmsford has 5 orthopedic surgeons in the current Medicare data. Comparing volume and procedure mix across them is one way to narrow a shortlist. Dr. Prybyla also holds hospital privileges in MA and NH, a practice that extends beyond Massachusetts.
Verified Case Volume Trends (2013-Current)
| Year | Hip Replacement | Knee Replacement |
|---|---|---|
| 2013 | 58 | 43 |
| 2014 | 51 | 48 |
| 2015 | 68 | 48 |
| 2016 | 61 | 60 |
| 2017 | 73 | 66 |
| 2018 | 74 | 66 |
| 2019 | 87 | 60 |
| 2020 | 63 | 58 |
| 2021 | 97 | 62 |
| 2022 | 92 | 76 |
| 2023 | 90 | 82 |
| 2024 | 72 | 99 |
Verified Medicare Cases
How is this estimated?
Medicare Part B fee-for-service claims are one payer stream among several, and the share they represent differs by procedure. In 2024 it was 23% to 28% for knee replacement, 25% to 33% for hip replacement. Each verified count above is divided by its own procedure's range, and the results are added, to estimate total practice volume across all payers. The verified Medicare count is the definitive, audited figure; this is a range derived from published national volume projections, not a measurement, and an individual practice can sit well outside it: how these ranges are derived, and their sources.
How Dr. Prybyla Compares
Procedure volume compared to the Massachusetts state average.
Volume Trend Analysis
Dr. Prybyla's Medicare-recorded procedure volume has trended upward over 12 years, increasing 69% from 101 procedures in 2013 to 171 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.
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.
Nutrition and Recovery After Joint ReplacementHow protein intake, anti-inflammatory foods, hydration, and targeted supplements support bone healing and tissue repair after surgery.
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. Prybyla
How does Dr. Prybyla's procedure volume compare to other Massachusetts surgeons?
Dr. Prybyla has performed 171 Medicare-verified joint replacement procedures. This is more than 2x the Massachusetts average of 74 procedures per surgeon. Dr. Prybyla ranks #19 out of 203 orthopedic surgeons in Massachusetts.
What types of joint replacement does Dr. Prybyla perform?
Dr. Prybyla's Medicare data shows procedures in knee replacement (99 cases) and hip replacement (72 cases).
How experienced is Dr. Prybyla with knee replacement surgery?
Dr. Prybyla ranks #18 in Massachusetts for knee replacement with 99 Medicare-verified procedures. This high ranking among 203 state surgeons indicates significant experience with this specific procedure.
Are there other orthopedic surgeons near Dr. Prybyla in North Chelmsford?
Yes. There are 5 orthopedic surgeons in North Chelmsford 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. Prybyla represent?
The procedure counts shown are based on 2024 Medicare Part B fee-for-service claims data, published by the Centers for Medicare and Medicaid Services (CMS). Medicare fee-for-service is only one payer stream, and the share of national volume it represents differs by procedure. In 2024 the share was 23% to 28% for knee replacement, 25% to 33% for hip replacement, which puts Dr. Prybyla's total volume across all insurers at roughly 570 to 720 procedures against the 171 verified here. Those shares are derived from published national volume projections rather than quoted from a single publication, and they are estimates with real uncertainty. The OrthoProcedures methodology page shows the full derivation, the sources, and the limits at orthoprocedures.com/data-methodology.html.
Has Dr. Prybyla's procedure volume changed over time?
Yes. Dr. Prybyla's Medicare-recorded volume has increased from 101 procedures in 2013 to 171 in the most recent data, a 69% increase over 12 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 172 procedures in 2023.
Does Dr. Prybyla perform more than one type of joint replacement?
Yes. Dr. Prybyla's Medicare data shows procedures in knee replacement (99 cases), hip replacement (72 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Prybyla affiliated with?
According to CMS facility affiliation data, Dr. Prybyla is affiliated with Lowell General Hospital, Emerson Hospital -, Health Alliance - Clinton Hospital, Southern Nh Medical Center. Dr. Prybyla maintains hospital privileges across state lines, indicating a practice that serves patients in multiple states.
How does Dr. Prybyla compare to other orthopedic surgeons in North Chelmsford?
Among the 5 orthopedic surgeons in North Chelmsford, Dr. Prybyla ranks #1 by total Medicare procedure volume. Dr. Prybyla has the highest verified Medicare volume in the city.
What are the quality ratings for hospitals where Dr. Prybyla practices?
Lowell General Hospital (2 out of 5 CMS stars, hip/knee complication rate similar to national average); Emerson Hospital - (3 out of 5 CMS stars, hip/knee complication rate similar to national average); Health Alliance - Clinton Hospital (2 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 North Chelmsford, Massachusetts
Dr. Prybyla's 171 Medicare procedures are above the North Chelmsford average of 53. The table below compares verified procedure volumes for orthopedic surgeons practicing in North Chelmsford.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. W Wu | 39 | Knee, Shoulder |
| Dr. Scott Sigman | 25 | Knee |
| Dr. Samuel Gerber | 18 | Knee |
| Dr. Kevin Malone | 13 | 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.