Dr. Carl Deirmengian, MD
Dr. Carl Deirmengian is a board-certified orthopedic surgeon practicing in Limerick, Pennsylvania. Dr. Deirmengian has performed 105 Medicare-verified knee replacements (#30 in Pennsylvania) and 51 hip replacements, for a combined total of 156 procedures.
In Pennsylvania, Dr. Deirmengian performs well above average in knee (105 vs 45 avg), above average in hip (51 vs 34 avg).
Dr. Deirmengian's reported Medicare volume is split between knee replacements (105 cases) and hip replacements (51 cases).
Limerick is home to 3 orthopedic surgeons in the current Medicare dataset. Patients in the Limerick area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Dr. Deirmengian's Medicare data spans 11 years, beginning in 2013. Volume peaked at 243 procedures in 2015 before settling at 156 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. Deirmengian's 105 verified procedures is more than 2x 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. Deirmengian Compares
Procedure volume compared to the Pennsylvania state average.
Contact & Location
Limerick, PA 19468
Verified Case Volume Trends (2013-Current)
Volume Trend Analysis
Dr. Deirmengian's recorded volume peaked at 243 procedures in 2015 and stood at 156 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.
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.
Recovery Timeline: Week-by-Week ExpectationsA detailed week-by-week guide covering pain levels, mobility milestones, physical therapy progression, and when to expect a return to daily activities.
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. Deirmengian
How does Dr. Deirmengian's procedure volume compare to other Pennsylvania surgeons?
Dr. Deirmengian has performed 156 Medicare-verified joint replacement procedures. This is more than 2x the Pennsylvania average of 63 procedures per surgeon. Dr. Deirmengian ranks #37 out of 388 orthopedic surgeons in Pennsylvania.
What types of joint replacement does Dr. Deirmengian perform?
Dr. Deirmengian's Medicare data shows procedures in knee replacement (105 cases) and hip replacement (51 cases).
Are there other orthopedic surgeons near Dr. Deirmengian in Limerick?
Yes. There are 3 orthopedic surgeons in Limerick 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. Deirmengian 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. Deirmengian's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 156 procedures shown here.
Has Dr. Deirmengian's procedure volume changed over time?
Dr. Deirmengian's Medicare-recorded volume peaked at 243 procedures in 2015 and was 156 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. Deirmengian perform more than one type of joint replacement?
Yes. Dr. Deirmengian's Medicare data shows procedures in knee replacement (105 cases), hip replacement (51 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Deirmengian affiliated with?
According to CMS facility affiliation data, Dr. Deirmengian is affiliated with Physician'S Care Surgical Hospital.
How does Dr. Deirmengian compare to other orthopedic surgeons in Limerick?
Among the 3 orthopedic surgeons in Limerick, Dr. Deirmengian ranks #1 by total Medicare procedure volume. Dr. Deirmengian has the highest verified Medicare volume in the city.
What are the quality ratings for hospitals where Dr. Deirmengian practices?
Physician'S Care Surgical Hospital (hip/knee complication rate better than national average). These are hospital-level quality metrics from CMS Hospital Compare and do not reflect individual surgeon outcomes.
Other Orthopedic Surgeons in Limerick, Pennsylvania
Dr. Deirmengian's 156 Medicare procedures are above the Limerick average of 96. The table below compares verified procedure volumes for orthopedic surgeons practicing in Limerick.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. H Schaaf | 85 | Hip, Knee |
| Dr. Donald Mazur | 48 | Knee |
Patient Reviews & Ratings
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