#116 in New Jersey
Knee

Dr. Rocco Simmerano, M.D.

Orthopedic Surgery
16 procedures 2 hospitals Denville, NJ
Latest available Medicare data — updated April 2026
Knee replacement recovery kit Ice machines, mobility aids, bathroom safety — under $50 essentials
National Comparison by Procedure
Knee 16 vs 45 avg (6,720 surgeons)

Dr. Rocco Simmerano is a board-certified orthopedic surgeon practicing in Denville, New Jersey. A Medicare provider since 2006, Dr. Simmerano has performed 16 Medicare-verified knee replacements, ranking #116 in New Jersey.

In New Jersey, Dr. Simmerano performs below average in knee (16 vs 53 avg).

Dr. Simmerano's Medicare data shows a focused knee replacement practice with 16 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.

Denville is home to 2 orthopedic surgeons in the current Medicare dataset. Patients in the Denville area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.

Dr. Simmerano's Medicare record spans 3 years from 2015 through 2023. Procedure volume has remained consistent during that period, ranging from 12 to 18 procedures per year, reflecting a steady joint replacement practice.

Dr. Simmerano's 16 knee replacement procedures is below the national average of 45 among 6,720 surgeons. Medicare data captures roughly a third of all joint replacements, so actual volume is likely higher.

Verified Medicare Cases

Knee Replacement
16 verified cases
#116 in New Jersey
Estimated total: 40 – 50 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. Simmerano Compares

Procedure volume compared to the New Jersey state average.

Knee Below Avg
16 Avg: 53
Dr. Simmerano New Jersey Average

Contact & Location

Phone: 973-625-1221
109 Us Highway 46
Denville, NJ 07834
NPI: 1518973296
Credentials: M.D.
Active Medicare provider (NPI verified)
20 years of practice experience
Licensed M.D.
Licensed surgical specialist
Board-certified orthopedic surgeon
Contact information available
Find Practice on Google Maps

Volume Trend Analysis

Dr. Simmerano's procedure volume has been consistent across 3 years of Medicare data, ranging from 12 to 18 procedures per year. This stability suggests a well-established joint replacement practice.

Years of Data 3
2023 Volume 16
Peak Volume 18 (2015)
Trend Stable

Hospital Affiliations & Quality

H
Saint Clare'S Hospital
★★★☆☆
Denville, NJ
Similar to national avg
H
Morristown Medical Center
★★★★★
Morristown, NJ
Similar to national avg

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.

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. Simmerano

How does Dr. Simmerano's procedure volume compare to other New Jersey surgeons?

Dr. Simmerano has performed 16 Medicare-verified joint replacement procedures. The New Jersey average is 71 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Simmerano ranks #149 out of 182 orthopedic surgeons in New Jersey.

What types of joint replacement does Dr. Simmerano perform?

Dr. Simmerano'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. Simmerano in Denville?

Yes. There are 2 orthopedic surgeons in Denville 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 New Jersey surgeons.

What does the Medicare data for Dr. Simmerano 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. Simmerano's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 16 procedures shown here.

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

Dr. Simmerano's procedure volume has been relatively stable over 3 years of Medicare data, ranging from 12 to 18 procedures per year between 2015 and 2023. Consistent volume over multiple years reflects a steady joint replacement practice.

Which hospitals is Dr. Simmerano affiliated with?

According to CMS facility affiliation data, Dr. Simmerano is affiliated with Saint Clare'S Hospital, Morristown Medical Center.

What are the quality ratings for hospitals where Dr. Simmerano practices?

Saint Clare'S Hospital (3 out of 5 CMS stars, hip/knee complication rate similar to national average); Morristown Medical Center (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 Denville, New Jersey

Dr. Simmerano's 16 Medicare procedures are below the Denville average of 28. The table below compares verified procedure volumes for orthopedic surgeons practicing in Denville.

SurgeonProceduresSpecialties
Dr. Frank Capecci 40 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. Rocco Simmerano, M.D. -- Orthopedic Surgeon Profile. Retrieved from https://orthoprocedures.com/surgeons/nj/dr-rocco-simmerano-denville.html

Link: https://orthoprocedures.com/surgeons/nj/dr-rocco-simmerano-denville.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.