Dr. David Gregory, DO
Contact & Location
Lancaster, PA 17601
Dr. David Gregory is a board-certified orthopedic surgeon practicing in Lancaster, Pennsylvania. A Medicare provider since 2017, Dr. Gregory has performed 14 Medicare-verified knee replacements (#278 in Pennsylvania) and 12 hip replacements, for a combined total of 26 procedures.
In Pennsylvania, Dr. Gregory performs below average in knee (14 vs 47 avg), below average in hip (12 vs 37 avg).
Dr. Gregory's reported Medicare volume is split between knee replacements (14 cases) and hip replacements (12 cases).
Beyond general orthopedic surgery, Dr. Gregory holds additional credentials in Adult Reconstructive Orthopaedic Surgery, reflecting subspecialty training that may benefit patients with complex joint conditions.
Lancaster is home to 19 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's Medicare data spans 3 years, beginning in 2022. Volume peaked at 115 procedures in 2023 before settling at 26 in the most recent data. Changes in Medicare reporting, payer mix shifts, or practice focus adjustments can all influence year-to-year volume.
Dr. Gregory's 14 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. Gregory Compares
Procedure volume compared to the Pennsylvania state average.
Volume Trend Analysis
Dr. Gregory's recorded volume peaked at 115 procedures in 2023 and stood at 26 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.
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 26 Medicare-verified joint replacement procedures. The Pennsylvania average is 66 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Gregory ranks #277 out of 376 orthopedic surgeons in Pennsylvania.
What types of joint replacement does Dr. Gregory perform?
Dr. Gregory's Medicare data shows procedures in knee replacement (14 cases) and hip replacement (12 cases).
Are there other orthopedic surgeons near Dr. Gregory in Lancaster?
Yes. There are 19 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 26 procedures shown here.
Has Dr. Gregory's procedure volume changed over time?
Dr. Gregory's Medicare-recorded volume peaked at 115 procedures in 2023 and was 26 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. Gregory perform more than one type of joint replacement?
Yes. Dr. Gregory's Medicare data shows procedures in knee replacement (14 cases), hip replacement (12 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 19 orthopedic surgeons in Lancaster, Dr. Gregory ranks #15 by total Medicare procedure volume. The highest-volume surgeon in Lancaster has 169 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 26 Medicare procedures are below the Lancaster average of 104. The table below compares verified procedure volumes for orthopedic surgeons practicing in Lancaster.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Thomas Renz | 169 | Hip, Knee |
| Dr. Gregory Tocks | 127 | Hip, Knee, Shoulder |
| Dr. Young Jee | 107 | Hip, Knee |
| Dr. Carl Becker | 104 | Hip, Knee, Shoulder |
| Dr. Christopher Cooke | 97 | Hip, Knee |
| Dr. Matthew Poorman | 97 | 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.