Dr. Zakariah Mahmood, M.D.
Contact & Location
833-882-2737
Austin, TX 78712
Ocala, FL 34471
Dr. Mahmood performs more shoulder replacement procedures than 82% of orthopedic surgeons in Florida, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #27 of 157 ranked shoulder surgeons in Florida.
About Dr. Mahmood
Practice. Dr. Zakariah Mahmood is an orthopedic surgeon practicing in Ocala, Florida. The latest annual CMS data records 49 shoulder replacements. That is #27 in Florida for shoulder replacement. Dr. Mahmood also holds credentials in Hand Surgery. A Medicare provider since 2007.
Trend. Medicare records run from 2016 to 2024, 9 years. Volume rose from 18 procedures a year to 49, up 172%.
National context. Among 2,217 shoulder replacement surgeons tracked nationally, 49 procedures is above the national average of 29.
Local context. Ocala 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 Trends (2013-Current)
| Year | Shoulder Replacement |
|---|---|
| 2013 | 0 |
| 2014 | 0 |
| 2015 | 0 |
| 2016 | 18 |
| 2017 | 51 |
| 2018 | 54 |
| 2019 | 54 |
| 2020 | 45 |
| 2021 | 61 |
| 2022 | 56 |
| 2023 | 61 |
| 2024 | 49 |
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. Mahmood Compares
Procedure volume compared to the Florida state average.
Volume Trend Analysis
Dr. Mahmood's Medicare-recorded procedure volume has trended upward over 9 years, increasing 172% from 18 procedures in 2016 to 49 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 step-by-step walkthrough of your surgical day, from pre-op preparation through anesthesia, the procedure itself, and the first hours of recovery.
Rehabilitation Roadmap: Your Complete Recovery GuideA structured physical therapy progression from the first post-op exercises through full strength and mobility restoration over 3 to 6 months.
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.
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. Mahmood
How does Dr. Mahmood's procedure volume compare to other Florida surgeons?
Dr. Mahmood has performed 49 Medicare-verified joint replacement procedures. The Florida average is 72 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Mahmood ranks #263 out of 523 orthopedic surgeons in Florida.
What types of joint replacement does Dr. Mahmood perform?
Dr. Mahmood's reported Medicare volume is focused on shoulder replacement, with 49 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
Where is Dr. Mahmood's practice located?
Dr. Mahmood's current practice address is in Austin, TX. That address is the current practice address in Dr. Mahmood's own CMS NPPES registry entry, which providers maintain themselves. The Medicare claims data used for the rankings on this page was billed from Ocala, Florida.
What does the Medicare data for Dr. Mahmood 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. Mahmood's total volume across all insurers at roughly 130 to 170 procedures against the 49 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. Mahmood's procedure volume changed over time?
Yes. Dr. Mahmood's Medicare-recorded volume has increased from 18 procedures in 2016 to 49 in the most recent data, a 172% increase over 9 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 61 procedures in 2021.
Which hospitals is Dr. Mahmood affiliated with?
According to CMS facility affiliation data, Dr. Mahmood is affiliated with Hca Florida Ocala Hospital.
How does Dr. Mahmood compare to other orthopedic surgeons in Ocala?
Among the 8 orthopedic surgeons in Ocala, Dr. Mahmood ranks #6 by total Medicare procedure volume. The highest-volume surgeon in Ocala has 138 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Mahmood practices?
Hca Florida Ocala Hospital (1 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 Ocala, Florida
Dr. Mahmood's 49 Medicare procedures are below the Ocala average of 76. The table below compares verified procedure volumes for orthopedic surgeons practicing in Ocala.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Marc Rogers | 138 | Hip, Knee |
| Dr. Derek Farr | 117 | Hip, Knee, Shoulder |
| Dr. Justin Deen | 76 | Hip, Knee |
| Dr. James McFadden | 67 | Hip, Knee |
| Dr. Karl Siebuhr | 49 | Hip, Knee, Shoulder |
| Dr. Luis Pulido Sierra | 37 | 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.