Dr. Nicholas Callahan, D.O.
Dr. Nicholas Callahan is a board-certified orthopedic surgeon practicing in Erie, Pennsylvania. Dr. Callahan has completed 36 shoulder replacements (#26 in Pennsylvania), 26 knee replacements, and 19 hip replacements, totaling 81 Medicare-verified procedures.
In Pennsylvania, Dr. Callahan performs above average in shoulder (36 vs 29 avg), below average in knee (26 vs 45 avg), below average in hip (19 vs 34 avg).
Dr. Callahan performs all three major joint replacement procedures — hip, knee, and shoulder — indicating a broad scope of orthopedic practice. The largest share is shoulder replacements (36 cases), followed by knee replacements (26) and hip replacements (19).
Erie is home to 10 orthopedic surgeons in the current Medicare dataset. Patients in the Erie area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Dr. Callahan first appears in the Medicare dataset in 2022. With 2 years of recorded data, the longitudinal trend is still developing.
Among 2,092 shoulder replacement surgeons tracked nationally, Dr. Callahan's 36 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. Callahan Compares
Procedure volume compared to the Pennsylvania state average.
Contact & Location
Erie, PA 16509
Verified Case Volume Trends (2013-Current)
Volume Trend Analysis
Dr. Callahan has 2 years of Medicare procedure data beginning in 2022. Additional years of data will provide a clearer picture of volume trends.
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:
Evidence-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.
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. Callahan
How does Dr. Callahan's procedure volume compare to other Pennsylvania surgeons?
Dr. Callahan has performed 81 Medicare-verified joint replacement procedures. This is in line with the Pennsylvania average of 63 procedures per surgeon. Dr. Callahan ranks #96 out of 388 orthopedic surgeons in Pennsylvania.
What types of joint replacement does Dr. Callahan perform?
Dr. Callahan performs all three major joint replacement procedures: shoulder replacement (36 cases), knee replacement (26 cases), hip replacement (19 cases). This breadth indicates a comprehensive orthopedic joint replacement practice.
Are there other orthopedic surgeons near Dr. Callahan in Erie?
Yes. There are 10 orthopedic surgeons in Erie 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 Pennsylvania 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 81 procedures shown here.
Does Dr. Callahan perform more than one type of joint replacement?
Yes. Dr. Callahan's Medicare data shows procedures in shoulder replacement (36 cases), knee replacement (26 cases), hip replacement (19 cases). Performing all three major joint replacements places Dr. Callahan among the 5% of orthopedic surgeons nationally who cover hip, knee, and shoulder arthroplasty.
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. Dr. Callahan maintains hospital privileges across state lines, indicating a practice that serves patients in multiple states.
How does Dr. Callahan compare to other orthopedic surgeons in Erie?
Among the 10 orthopedic surgeons in Erie, Dr. Callahan ranks #2 by total Medicare procedure volume. Dr. Callahan is among the highest-volume surgeons in Erie.
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 Erie, Pennsylvania
Dr. Callahan's 81 Medicare procedures are above the Erie average of 60. The table below compares verified procedure volumes for orthopedic surgeons practicing in Erie.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Robert Lupo | 115 | Hip, Knee, Shoulder |
| Dr. Nick Stefanovski | 58 | Hip, Knee |
| Dr. David German | 56 | Hip, Knee |
| Dr. Jeffrey Nechleba | 46 | Hip, Knee |
| Dr. James Delullo | 35 | Hip, Knee |
| Dr. Mark Buseck | 32 | Hip, Knee |
Patient Reviews & Ratings
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