Dr. Ralph Zade, M.D.
Contact & Location
410-644-1880
Catonsville, MD 21228
Dr. Zade performs more knee replacement procedures than 15% of orthopedic surgeons in Maryland, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #116 of 138 ranked knee surgeons in Maryland.
About Dr. Zade
Practice. Dr. Ralph Zade is a board-certified orthopedic surgeon practicing in Catonsville, Maryland. The latest annual CMS data records 16 knee replacements. That is #116 in Maryland for knee replacement. A Medicare provider since 2012.
Trend. Dr. Zade first appears in the Medicare data in 2024. With 1 year on record, the trend is still short.
National context. Among 6,612 knee replacement surgeons tracked nationally, 16 procedures is below the national average of 45. Medicare covers part of all joint replacements, so true volume is likely higher.
Local context. Catonsville has 8 orthopedic surgeons in the current Medicare data. Comparing volume and procedure mix across them is one way to narrow a shortlist.
Verified Case Volume
Verified Medicare data is available for 1 year: 16 procedures in the most recent reporting year. A multi-year trend chart is shown once at least 3 years of data are available.
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. Zade Compares
Procedure volume compared to the Maryland state average.
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.
Nutrition and Recovery After Joint ReplacementHow protein intake, anti-inflammatory foods, hydration, and targeted supplements support bone healing and tissue repair after surgery.
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. Zade
How does Dr. Zade's procedure volume compare to other Maryland surgeons?
Dr. Zade has performed 16 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. Zade ranks #148 out of 166 orthopedic surgeons in Maryland.
What types of joint replacement does Dr. Zade perform?
Dr. Zade's reported Medicare volume is focused on knee replacement, with 16 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
Are there other orthopedic surgeons near Dr. Zade in Catonsville?
Yes. There are 8 orthopedic surgeons in Catonsville 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. Zade 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. Zade's total volume across all insurers at roughly 60 to 70 procedures against the 16 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.
Which hospitals is Dr. Zade affiliated with?
According to CMS facility affiliation data, Dr. Zade is affiliated with Saint Agnes Hospital, Umd Rehabilitation & Orthopaedic Institute.
How does Dr. Zade compare to other orthopedic surgeons in Catonsville?
Among the 8 orthopedic surgeons in Catonsville, Dr. Zade ranks #8 by total Medicare procedure volume. The highest-volume surgeon in Catonsville has 190 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Zade practices?
Saint Agnes 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 Catonsville, Maryland
Dr. Zade's 16 Medicare procedures are below the Catonsville average of 86. The table below compares verified procedure volumes for orthopedic surgeons practicing in Catonsville.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Sam Sydney | 190 | Hip, Knee, Shoulder |
| Dr. Ke Xie | 165 | Hip, Knee |
| Dr. Scott Silverstein | 95 | Hip, Knee |
| Dr. Morris Polsky | 67 | Hip, Knee |
| Dr. Joseph Serino | 43 | Hip, Knee |
| Dr. Michael Wallace | 28 | 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.