Dr. Nicholas Callahan, DO
Contact & Location
Mayfield Heights, OH 44124
Dr. Nicholas Callahan is a board-certified orthopedic surgeon practicing in Mayfield Heights, Ohio. A Medicare provider since 2014, Dr. Callahan has performed 19 Medicare-verified knee replacements (#225 in Ohio) and 17 hip replacements, for a combined total of 36 procedures.
In Ohio, Dr. Callahan performs below average in knee (19 vs 41 avg), below average in hip (17 vs 32 avg).
Dr. Callahan's reported Medicare volume is split between knee replacements (19 cases) and hip replacements (17 cases).
Mayfield Heights is home to 2 orthopedic surgeons in the current Medicare dataset. Patients in the Mayfield Heights area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Dr. Callahan's Medicare data spans 3 years, beginning in 2022. Volume peaked at 81 procedures in 2023 before settling at 36 in the most recent data. Changes in Medicare reporting, payer mix shifts, or practice focus adjustments can all influence year-to-year volume.
Dr. Callahan's 19 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. Callahan Compares
Procedure volume compared to the Ohio state average.
Volume Trend Analysis
Dr. Callahan's recorded volume peaked at 81 procedures in 2023 and stood at 36 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.
Pain Management After Joint ReplacementA comprehensive guide to managing post-surgical pain through medication, physical therapy, cold therapy, and non-pharmacological strategies.
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. Callahan
How does Dr. Callahan's procedure volume compare to other Ohio surgeons?
Dr. Callahan has performed 36 Medicare-verified joint replacement procedures. The Ohio average is 59 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Callahan ranks #211 out of 370 orthopedic surgeons in Ohio.
What types of joint replacement does Dr. Callahan perform?
Dr. Callahan's Medicare data shows procedures in knee replacement (19 cases) and hip replacement (17 cases).
Are there other orthopedic surgeons near Dr. Callahan in Mayfield Heights?
Yes. There are 2 orthopedic surgeons in Mayfield Heights 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. Callahan 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. Callahan's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 36 procedures shown here.
Has Dr. Callahan's procedure volume changed over time?
Dr. Callahan's Medicare-recorded volume peaked at 81 procedures in 2023 and was 36 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. Callahan perform more than one type of joint replacement?
Yes. Dr. Callahan's Medicare data shows procedures in knee replacement (19 cases), hip replacement (17 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Callahan affiliated with?
According to CMS facility affiliation data, Dr. Callahan is affiliated with Southwest General Health Center, Crystal Clinic Orthopaedic Center, University Hospitals Ahuja Medical Center.
What are the quality ratings for hospitals where Dr. Callahan practices?
Southwest General Health Center (4 out of 5 CMS stars, hip/knee complication rate similar to national average); Crystal Clinic Orthopaedic Center (5 out of 5 CMS stars, hip/knee complication rate better than national average); University Hospitals Ahuja Medical Center (3 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 Mayfield Heights, Ohio
Dr. Callahan's 36 Medicare procedures are below the Mayfield Heights average of 47. The table below compares verified procedure volumes for orthopedic surgeons practicing in Mayfield Heights.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Louis Keppler | 58 | 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.