Dr. David Gregory, DO
Dr. David Gregory is a board-certified orthopedic surgeon practicing in Lancaster, Pennsylvania. Dr. Gregory has performed 98 Medicare-verified knee replacements (#35 in Pennsylvania) and 17 hip replacements, for a combined total of 115 procedures.
In Pennsylvania, Dr. Gregory performs well above average in knee (98 vs 45 avg), below average in hip (17 vs 34 avg).
Dr. Gregory's practice is heavily focused on knee replacement surgery, which accounts for 85% of reported Medicare volume.
Lancaster is home to 25 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. Gregory first appears in the Medicare dataset in 2022. With 2 years of recorded data, the longitudinal trend is still developing.
Among 6,720 knee replacement surgeons tracked nationally, Dr. Gregory's 98 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. Gregory Compares
Procedure volume compared to the Pennsylvania state average.
Contact & Location
Lancaster, PA 17601
Verified Case Volume Trends (2013-Current)
Volume Trend Analysis
Dr. Gregory 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 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.
What to Expect on the Day of SurgeryA step-by-step walkthrough of your surgical day, from pre-op preparation through anesthesia, the procedure itself, and the first hours of recovery.
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.
Medicare Coverage for Joint ReplacementWhat Medicare Part A and Part B cover for joint replacement surgery, including hospital stays, surgeon fees, anesthesia, and physical therapy.
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. Gregory
How does Dr. Gregory's procedure volume compare to other Pennsylvania surgeons?
Dr. Gregory has performed 115 Medicare-verified joint replacement procedures. This is significantly above the Pennsylvania average of 63 procedures per surgeon. Dr. Gregory ranks #63 out of 388 orthopedic surgeons in Pennsylvania.
What types of joint replacement does Dr. Gregory perform?
Dr. Gregory's Medicare data shows procedures in knee replacement (98 cases) and hip replacement (17 cases).
Are there other orthopedic surgeons near Dr. Gregory in Lancaster?
Yes. There are 25 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 Pennsylvania surgeons.
What does the Medicare data for Dr. Gregory 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. Gregory's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 115 procedures shown here.
Does Dr. Gregory perform more than one type of joint replacement?
Yes. Dr. Gregory's Medicare data shows procedures in knee replacement (98 cases), hip replacement (17 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Gregory affiliated with?
According to CMS facility affiliation data, Dr. Gregory is affiliated with Lancaster General Hospital, Wellspan Ephrata Community Hospital.
How does Dr. Gregory compare to other orthopedic surgeons in Lancaster?
Among the 25 orthopedic surgeons in Lancaster, Dr. Gregory ranks #4 by total Medicare procedure volume. The highest-volume surgeon in Lancaster has 152 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Gregory practices?
Lancaster General Hospital (5 out of 5 CMS stars, hip/knee complication rate similar to national average); Wellspan Ephrata Community Hospital (4 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 Lancaster, Pennsylvania
Dr. Gregory's 115 Medicare procedures are below the Lancaster average of 116. The table below compares verified procedure volumes for orthopedic surgeons practicing in Lancaster.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Thomas Renz | 152 | Hip, Knee |
| Dr. Carl Becker | 118 | Hip, Knee, Shoulder |
| Dr. Gregory Tocks | 115 | Hip, Knee, Shoulder |
| Dr. Gary Zartman | 109 | Hip, Knee |
| Dr. Christopher Cooke | 102 | Hip, Knee |
| Dr. Thomas Westphal | 99 | Hip, Knee |
Patient Reviews & Ratings
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