Dr. Daniel Warner, MD
Contact & Location
301-665-4950
Hagerstown, MD 21742
Dr. Warner performs more knee replacement procedures than 20% of orthopedic surgeons in Maryland, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #110 of 138 ranked knee surgeons in Maryland.
About Dr. Warner
Dr. Daniel Warner is a board-certified orthopedic surgeon practicing in Hagerstown, Maryland. A Medicare provider since 2007, Dr. Warner performed 19 Medicare-verified knee replacements in the latest annual CMS data, ranking #110 in Maryland.
In Maryland, Dr. Warner performs below the state average in knee (19 vs 49).
Dr. Warner's Medicare data shows a focused knee replacement practice with 19 verified procedures. Surgeons who concentrate on a single procedure type often develop deep procedural expertise, though total practice volume may include additional procedures not captured in Medicare fee-for-service data.
Beyond general orthopedic surgery, Dr. Warner holds additional credentials in Sports Medicine, reflecting subspecialty training that may benefit patients with complex joint conditions.
Hagerstown is home to 6 orthopedic surgeons in the current Medicare dataset. Patients in the Hagerstown area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Dr. Warner's Medicare record spans 3 years from 2021 through 2024. Procedure volume has remained consistent during that period, ranging from 17 to 24 procedures per year, reflecting a steady joint replacement practice.
Dr. Warner's 19 knee replacement procedures is below the national average of 45 among 6,612 surgeons. Medicare data captures roughly a third of all joint replacements, so actual volume is likely higher.
Verified Case Volume Trends (2013-Current)
| Year | Knee Replacement |
|---|---|
| 2013 | 0 |
| 2014 | 0 |
| 2015 | 0 |
| 2016 | 0 |
| 2017 | 0 |
| 2018 | 0 |
| 2019 | 0 |
| 2020 | 0 |
| 2021 | 17 |
| 2022 | 0 |
| 2023 | 24 |
| 2024 | 19 |
Verified Medicare Cases
How is this estimated?
Medicare Part B fee-for-service claims are one payer stream among several, and the share they represent differs by procedure. In 2024 it was 23% to 28% for knee replacement. Each verified count above is divided by its own procedure's range, and the results are added, to estimate total practice volume across all payers. The verified Medicare count is the definitive, audited figure; this is a range derived from published national volume projections, not a measurement, and an individual practice can sit well outside it: how these ranges are derived, and their sources.
How Dr. Warner Compares
Procedure volume compared to the Maryland state average.
Volume Trend Analysis
Dr. Warner's procedure volume has been consistent across 3 years of Medicare data, ranging from 17 to 24 procedures per year. This stability suggests a well-established joint replacement practice.
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.
Nutrition and Recovery After Joint ReplacementHow protein intake, anti-inflammatory foods, hydration, and targeted supplements support bone healing and tissue repair after surgery.
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. Warner
How does Dr. Warner's procedure volume compare to other Maryland surgeons?
Dr. Warner has performed 19 Medicare-verified joint replacement procedures. The Maryland average is 71 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Warner ranks #143 out of 166 orthopedic surgeons in Maryland.
What types of joint replacement does Dr. Warner perform?
Dr. Warner's reported Medicare volume is focused on knee replacement, with 19 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
Are there other orthopedic surgeons near Dr. Warner in Hagerstown?
Yes. There are 6 orthopedic surgeons in Hagerstown 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 Maryland surgeons.
What does the Medicare data for Dr. Warner represent?
The procedure counts shown are based on 2024 Medicare Part B fee-for-service claims data, published by the Centers for Medicare and Medicaid Services (CMS). Medicare fee-for-service is only one payer stream, and the share of national volume it represents differs by procedure. In 2024 the share was 23% to 28% for knee replacement, which puts Dr. Warner's total volume across all insurers at roughly 70 to 80 procedures against the 19 verified here. Those shares are derived from published national volume projections rather than quoted from a single publication, and they are estimates with real uncertainty. The OrthoProcedures methodology page shows the full derivation, the sources, and the limits at orthoprocedures.com/data-methodology.html.
Has Dr. Warner's procedure volume changed over time?
Dr. Warner's procedure volume has been relatively stable over 3 years of Medicare data, ranging from 17 to 24 procedures per year between 2021 and 2024. Consistent volume over multiple years reflects a steady joint replacement practice.
Which hospitals is Dr. Warner affiliated with?
According to CMS facility affiliation data, Dr. Warner is affiliated with Meritus Medical Center, Frederick Health Hospital.
How does Dr. Warner compare to other orthopedic surgeons in Hagerstown?
Among the 6 orthopedic surgeons in Hagerstown, Dr. Warner ranks #6 by total Medicare procedure volume. The highest-volume surgeon in Hagerstown has 229 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Warner practices?
Meritus Medical Center (2 out of 5 CMS stars, hip/knee complication rate similar to national average); Frederick Health Hospital (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 Hagerstown, Maryland
Dr. Warner's 19 Medicare procedures are below the Hagerstown average of 81. The table below compares verified procedure volumes for orthopedic surgeons practicing in Hagerstown.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Joseph Holobinko | 229 | Hip, Knee, Shoulder |
| Dr. Alvaro Cabezas | 111 | Hip, Knee |
| Dr. Victor Anyangwe | 49 | Hip, Knee, Shoulder |
| Dr. Manminder Bhatia | 41 | Hip, Knee |
| Dr. Rhamee Badr | 34 | 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.