#14 Knee
#117 Hip

Dr. James Duke, MD

Orthopedic Surgery
186 procedures Ocala, FL
Latest available Medicare data — updated April 2026
Top 10% Nationally
Knee replacement recovery kit Ice machines, mobility aids, bathroom safety — under $50 essentials
National Comparison by Procedure
Hip 35 vs 36 avg (4,526 surgeons)
Knee 151 vs 45 avg (6,720 surgeons)

Dr. James Duke is a board-certified orthopedic surgeon practicing in Ocala, Florida. A Medicare provider since 2005, Dr. Duke has performed 151 Medicare-verified knee replacements (#14 in Florida) and 35 hip replacements, for a combined total of 186 procedures.

In Florida, Dr. Duke performs well above average in knee (151 vs 49 avg), near average in hip (35 vs 39 avg).

Dr. Duke's practice is heavily focused on knee replacement surgery, which accounts for 81% of reported Medicare volume.

Ocala is home to 8 orthopedic surgeons in the current Medicare dataset. Patients in the Ocala area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.

Dr. Duke's Medicare data spans 11 years, beginning in 2013. Volume peaked at 348 procedures in 2015 before settling at 186 in the most recent data. Changes in Medicare reporting, payer mix shifts, or practice focus adjustments can all influence year-to-year volume.

Among 6,720 knee replacement surgeons tracked nationally, Dr. Duke's 151 verified procedures is more than 3x the national average of 45, ranking #158 nationally.

Verified Medicare Cases

Knee Replacement
151 verified cases
#14 in Florida
Hip Replacement
35 verified cases
#117 in Florida
Estimated total: 500 – 560 procedures (all insurers)
Based on Medicare FFS representing 33–37% of national joint replacement volume
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. Duke Compares

Procedure volume compared to the Florida state average.

Hip Average
35 Avg: 39
Knee Very High
151 Avg: 49
Dr. Duke Florida Average

Contact & Location

Phone: 352-867-0444
2300 Se 17th St
Ocala, FL 34471
NPI: 1619958212
Credentials: MD
Active Medicare provider (NPI verified)
21 years of practice experience
Licensed MD
Licensed surgical specialist
Board-certified orthopedic surgeon
Contact information available
Find Practice on Google Maps

Volume Trend Analysis

Dr. Duke's recorded volume peaked at 348 procedures in 2015 and stood at 186 in the most recent data. Year-to-year variation can reflect changes in payer mix, practice scope, or Medicare billing patterns.

Years of Data 11
2023 Volume 186
Peak Volume 348 (2015)
Trend Declining

Knee Replacement Recovery Overview

Recovery timelines vary by patient, but here is a general overview of what to expect after knee replacement surgery:

Week 1-2 Walking with assistive device. Knee bending exercises begin immediately. Ice therapy and elevation for swelling control.
Week 3-6 Increased range of motion (target 90 degrees). Walking longer distances. Physical therapy intensifies with strengthening exercises.
Week 7-12 Most patients walk without assistive devices. Resume driving and desk work. Continue PT for strength and flexibility.
Month 4-6 Near-full recovery. Resume most recreational activities. Some swelling and stiffness may persist but continues improving.

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. Duke

How does Dr. Duke's procedure volume compare to other Florida surgeons?

Dr. Duke has performed 186 Medicare-verified joint replacement procedures. This is more than 2x the Florida average of 72 procedures per surgeon. Dr. Duke ranks #28 out of 509 orthopedic surgeons in Florida.

What types of joint replacement does Dr. Duke perform?

Dr. Duke's Medicare data shows procedures in knee replacement (151 cases) and hip replacement (35 cases).

How experienced is Dr. Duke with knee replacement surgery?

Dr. Duke ranks #14 in Florida for knee replacement with 151 Medicare-verified procedures. This high ranking among 509 state surgeons indicates significant experience with this specific procedure.

Are there other orthopedic surgeons near Dr. Duke in Ocala?

Yes. There are 8 orthopedic surgeons in Ocala 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 Florida surgeons.

What does the Medicare data for Dr. Duke 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. Duke's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 186 procedures shown here.

Has Dr. Duke's procedure volume changed over time?

Dr. Duke's Medicare-recorded volume peaked at 348 procedures in 2015 and was 186 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. Duke perform more than one type of joint replacement?

Yes. Dr. Duke's Medicare data shows procedures in knee replacement (151 cases), hip replacement (35 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.

How does Dr. Duke compare to other orthopedic surgeons in Ocala?

Among the 8 orthopedic surgeons in Ocala, Dr. Duke ranks #2 by total Medicare procedure volume. Dr. Duke is among the highest-volume surgeons in Ocala.

Other Orthopedic Surgeons in Ocala, Florida

Dr. Duke's 186 Medicare procedures are above the Ocala average of 117. The table below compares verified procedure volumes for orthopedic surgeons practicing in Ocala.

SurgeonProceduresSpecialties
Dr. Joseph Locker 279 Hip, Knee
Dr. Marc Rogers 113 Hip, Knee
Dr. Derek Farr 98 Hip, Knee, Shoulder
Dr. Zakariah Mahmood 61 Shoulder
Dr. Christopher Manseau 46 Knee, Shoulder
Dr. Karl Siebuhr 35 Hip, Knee

Patient Reviews & Ratings

OrthoProcedures.com focuses on verified Medicare procedure data. For patient reviews, ratings, and appointment scheduling, visit these trusted platforms:

These links lead to third-party websites. OrthoProcedures.com is not affiliated with these platforms and cannot verify the accuracy of reviews.

Cite This Data

APA: OrthoProcedures. (2026). Dr. James Duke, MD -- Orthopedic Surgeon Profile. Retrieved from https://orthoprocedures.com/surgeons/fl/dr-james-duke-ocala.html

Link: https://orthoprocedures.com/surgeons/fl/dr-james-duke-ocala.html

Data source: CMS Medicare Part B Provider Utilization & Payment Data. Full methodology | Open Data API

Important: Rankings are based solely on Medicare procedure volume and do not reflect quality of care, patient outcomes, or procedures covered by private insurance. This data represents approximately one-third to 40% of all joint replacement procedures nationwide. Always consult with healthcare providers to make informed decisions about your care.