Dr. Mark D'onofrio, M.D.
Dr. Mark D'onofrio is a board-certified orthopedic surgeon practicing in Lancaster, Ohio. A Medicare provider since 2006, Dr. D'onofrio has completed 63 knee replacements (#57 in Ohio), 34 hip replacements, and 15 shoulder replacements, totaling 112 Medicare-verified procedures.
In Ohio, Dr. D'onofrio performs above average in knee (63 vs 40 avg), near average in hip (34 vs 31 avg), below average in shoulder (15 vs 27 avg).
Dr. D'onofrio performs all three major joint replacement procedures — hip, knee, and shoulder — indicating a broad scope of orthopedic practice. The largest share is knee replacements (63 cases), followed by hip replacements (34) and shoulder replacements (15).
Lancaster is home to 2 orthopedic surgeons in the current Medicare dataset. Patients in the Lancaster area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Dr. D'onofrio's Medicare data spans 11 years, beginning in 2013. Volume peaked at 193 procedures in 2016 before settling at 112 in the most recent data. Changes in Medicare reporting, payer mix shifts, or practice focus adjustments can all influence year-to-year volume.
Among 6,720 knee replacement surgeons tracked nationally, Dr. D'onofrio's 63 verified procedures is above the national average of 45.
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. D'onofrio Compares
Procedure volume compared to the Ohio state average.
Contact & Location
Lancaster, OH 43130
Verified Case Volume Trends (2013-Current)
Volume Trend Analysis
Dr. D'onofrio's recorded volume peaked at 193 procedures in 2016 and stood at 112 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.
Prehabilitation: Preparing Your Body for SurgeryEvidence-based exercises and lifestyle adjustments that can improve surgical outcomes and speed recovery when started weeks before your procedure.
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.
Medicare Bundled Payment Programs for Joint ReplacementHow bundled payment models affect your joint replacement costs and care coordination, and what it means for hospital and surgeon selection.
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. D'onofrio
How does Dr. D'onofrio's procedure volume compare to other Ohio surgeons?
Dr. D'onofrio has performed 112 Medicare-verified joint replacement procedures. This is significantly above the Ohio average of 57 procedures per surgeon. Dr. D'onofrio ranks #47 out of 378 orthopedic surgeons in Ohio.
What types of joint replacement does Dr. D'onofrio perform?
Dr. D'onofrio performs all three major joint replacement procedures: knee replacement (63 cases), hip replacement (34 cases), shoulder replacement (15 cases). This breadth indicates a comprehensive orthopedic joint replacement practice.
Are there other orthopedic surgeons near Dr. D'onofrio in Lancaster?
Yes. There are 2 orthopedic surgeons in Lancaster 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 Ohio surgeons.
What does the Medicare data for Dr. D'onofrio 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. D'onofrio's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 112 procedures shown here.
Has Dr. D'onofrio's procedure volume changed over time?
Dr. D'onofrio's Medicare-recorded volume peaked at 193 procedures in 2016 and was 112 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. D'onofrio perform more than one type of joint replacement?
Yes. Dr. D'onofrio's Medicare data shows procedures in knee replacement (63 cases), hip replacement (34 cases), shoulder replacement (15 cases). Performing all three major joint replacements places Dr. D'onofrio among the 5% of orthopedic surgeons nationally who cover hip, knee, and shoulder arthroplasty.
Which hospitals is Dr. D'onofrio affiliated with?
According to CMS facility affiliation data, Dr. D'onofrio is affiliated with Fairfield Medical Center, Hocking Valley Community Hospital.
What are the quality ratings for hospitals where Dr. D'onofrio practices?
Fairfield Medical Center (2 out of 5 CMS stars, hip/knee complication rate similar to national average); Hocking Valley Community Hospital (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 Lancaster, Ohio
Dr. D'onofrio's 112 Medicare procedures are above the Lancaster average of 64. The table below compares verified procedure volumes for orthopedic surgeons practicing in Lancaster.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Kristopher Collins | 15 | Knee |
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