Dr. William Mook, M.D.
Contact & Location
703-810-5202
Reston, VA 20190
Dr. Mook performs more shoulder replacement procedures than 71% of orthopedic surgeons in Virginia, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #18 of 64 ranked shoulder surgeons in Virginia.
About Dr. Mook
Practice. Dr. William Mook is a board-certified orthopedic surgeon practicing in Reston, Virginia. The latest annual CMS data records 39 shoulder replacements. That is #18 in Virginia for shoulder replacement. Dr. Mook also holds credentials in Sports Medicine. A Medicare provider since 2009.
Trend. Medicare records run from 2016 to 2024, 8 years. Volume rose from 14 procedures a year to 39, up 179%.
National context. Among 2,217 shoulder replacement surgeons tracked nationally, 39 procedures is above the national average of 29.
Local context. Reston has 7 orthopedic surgeons in the current Medicare data. Comparing volume and procedure mix across them is one way to narrow a shortlist.
Verified Case Volume Trends (2013-Current)
| Year | Shoulder Replacement |
|---|---|
| 2013 | 0 |
| 2014 | 0 |
| 2015 | 0 |
| 2016 | 14 |
| 2017 | 0 |
| 2018 | 11 |
| 2019 | 15 |
| 2020 | 31 |
| 2021 | 25 |
| 2022 | 28 |
| 2023 | 44 |
| 2024 | 39 |
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 29% to 37% for shoulder 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. Mook Compares
Procedure volume compared to the Virginia state average.
Volume Trend Analysis
Dr. Mook's Medicare-recorded procedure volume has trended upward over 8 years, increasing 179% from 14 procedures in 2016 to 39 in the most recent data.
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 Shoulder Replacement
If you are considering shoulder replacement surgery, these evidence-based guides can help you prepare and recover:
A practical checklist of questions covering experience, technique, hospital choice, and recovery expectations to discuss during your surgical consultation.
Pain Management After Joint ReplacementA comprehensive guide to managing post-surgical pain through medication, physical therapy, cold therapy, and non-pharmacological strategies.
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.
Shoulder Replacement Recovery Overview
Recovery timelines vary by patient, but here is a general overview of what to expect after shoulder replacement surgery:
Individual recovery varies based on overall health, age, and adherence to physical therapy. View full shoulder replacement recovery guide and product recommendations
Frequently Asked Questions About Dr. Mook
How does Dr. Mook's procedure volume compare to other Virginia surgeons?
Dr. Mook has performed 39 Medicare-verified joint replacement procedures. The Virginia average is 82 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Mook ranks #142 out of 229 orthopedic surgeons in Virginia.
What types of joint replacement does Dr. Mook perform?
Dr. Mook's reported Medicare volume is focused on shoulder replacement, with 39 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
How experienced is Dr. Mook with shoulder replacement surgery?
Dr. Mook ranks #18 in Virginia for shoulder replacement with 39 Medicare-verified procedures. This high ranking among 229 state surgeons indicates significant experience with this specific procedure.
Are there other orthopedic surgeons near Dr. Mook in Reston?
Yes. There are 7 orthopedic surgeons in Reston 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 Virginia surgeons.
What does the Medicare data for Dr. Mook 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 29% to 37% for shoulder replacement, which puts Dr. Mook's total volume across all insurers at roughly 110 to 130 procedures against the 39 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. Mook's procedure volume changed over time?
Yes. Dr. Mook's Medicare-recorded volume has increased from 14 procedures in 2016 to 39 in the most recent data, a 179% increase over 8 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 44 procedures in 2023.
Which hospitals is Dr. Mook affiliated with?
According to CMS facility affiliation data, Dr. Mook is affiliated with Reston Hospital Center, Inova Fair Oaks Hospital, Inova Loudoun Hospital.
How does Dr. Mook compare to other orthopedic surgeons in Reston?
Among the 7 orthopedic surgeons in Reston, Dr. Mook ranks #5 by total Medicare procedure volume. The highest-volume surgeon in Reston has 166 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Mook practices?
Reston Hospital Center (3 out of 5 CMS stars, hip/knee complication rate similar to national average); Inova Fair Oaks Hospital (5 out of 5 CMS stars, hip/knee complication rate similar to national average); Inova Loudoun Hospital (5 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 Reston, Virginia
Dr. Mook's 39 Medicare procedures are below the Reston average of 76. The table below compares verified procedure volumes for orthopedic surgeons practicing in Reston.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. James Reeves | 166 | Hip, Knee |
| Dr. Thomas Klein | 100 | Hip, Knee |
| Dr. George Aguiar | 93 | Knee |
| Dr. Vignesh Alamanda | 83 | Hip, Knee |
| Dr. Aaron Carter | 33 | Knee, Shoulder |
| Dr. Thomas Fleeter | 19 | Hip |
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.