Dr. Jason Desmarais, MD
Contact & Location
603-224-3368
Concord, NH 03301
About Dr. Desmarais
Dr. Jason Desmarais is a board-certified orthopedic surgeon practicing in Concord, New Hampshire. A Medicare provider since 2014, Dr. Desmarais performed 96 Medicare-verified knee replacements (#3 in New Hampshire) and 65 hip replacements in the latest annual CMS data, for a combined total of 161 procedures.
In New Hampshire, Dr. Desmarais performs above the state average in knee (96 vs 50), above the state average in hip (65 vs 40).
Dr. Desmarais's reported Medicare volume is split between knee replacements (96 cases) and hip replacements (65 cases).
Beyond general orthopedic surgery, Dr. Desmarais holds additional credentials in Adult Reconstructive Orthopaedic Surgery, reflecting subspecialty training that may benefit patients with complex joint conditions.
Concord is home to 9 orthopedic surgeons in the current Medicare dataset. Patients in the Concord area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Desmarais extend back to 2019, covering 6 years of data. Over that period, recorded procedure volume increased from 11 to 161 in the most recent data, a 1364% increase. This sustained growth reflects an expanding joint replacement practice.
Among 6,599 knee replacement surgeons tracked nationally, Dr. Desmarais's 96 verified procedures is more than 2x the national average of 45.
Verified Case Volume Trends (2013-Current)
| Year | Hip Replacement | Knee Replacement |
|---|---|---|
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 11 |
| 2020 | 11 | 0 |
| 2021 | 37 | 32 |
| 2022 | 40 | 41 |
| 2023 | 49 | 71 |
| 2024 | 65 | 96 |
Verified Medicare Cases
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. Desmarais Compares
Procedure volume compared to the New Hampshire state average.
Volume Trend Analysis
Dr. Desmarais's Medicare-recorded procedure volume has trended upward over 6 years, increasing 1364% from 11 procedures in 2019 to 161 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 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.
Home Safety: Creating Your Recovery SanctuaryRoom-by-room modifications, equipment recommendations, and fall-prevention strategies to prepare your home for a safe post-surgical recovery.
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. Desmarais
How does Dr. Desmarais's procedure volume compare to other New Hampshire surgeons?
Dr. Desmarais has performed 161 Medicare-verified joint replacement procedures. This is more than 2x the New Hampshire average of 68 procedures per surgeon. Dr. Desmarais ranks #3 out of 56 orthopedic surgeons in New Hampshire.
What types of joint replacement does Dr. Desmarais perform?
Dr. Desmarais's Medicare data shows procedures in knee replacement (96 cases) and hip replacement (65 cases).
How experienced is Dr. Desmarais with knee replacement surgery?
Dr. Desmarais ranks #3 in New Hampshire for knee replacement with 96 Medicare-verified procedures. This high ranking among 56 state surgeons indicates significant experience with this specific procedure.
Are there other orthopedic surgeons near Dr. Desmarais in Concord?
Yes. There are 9 orthopedic surgeons in Concord 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 Hampshire surgeons.
What does the Medicare data for Dr. Desmarais 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. Desmarais's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 161 procedures shown here.
Has Dr. Desmarais's procedure volume changed over time?
Yes. Dr. Desmarais's Medicare-recorded volume has increased from 11 procedures in 2019 to 161 in the most recent data, a 1364% increase over 6 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 161 procedures in 2024.
Does Dr. Desmarais perform more than one type of joint replacement?
Yes. Dr. Desmarais's Medicare data shows procedures in knee replacement (96 cases), hip replacement (65 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Desmarais affiliated with?
According to CMS facility affiliation data, Dr. Desmarais is affiliated with Concord Hospital, Concord Hospital- Laconia, New London Hospital, Concord Hospital- Franklin, Elliot Hospital.
How does Dr. Desmarais compare to other orthopedic surgeons in Concord?
Among the 9 orthopedic surgeons in Concord, Dr. Desmarais ranks #1 by total Medicare procedure volume. Dr. Desmarais has the highest verified Medicare volume in the city.
What are the quality ratings for hospitals where Dr. Desmarais practices?
Concord Hospital (3 out of 5 CMS stars, hip/knee complication rate similar to national average); Concord Hospital- Laconia (3 out of 5 CMS stars, insufficient case volume for complication rate comparison). These are hospital-level quality metrics from CMS Hospital Compare and do not reflect individual surgeon outcomes.
Other Orthopedic Surgeons in Concord, New Hampshire
Dr. Desmarais's 161 Medicare procedures are above the Concord average of 94. The table below compares verified procedure volumes for orthopedic surgeons practicing in Concord.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Jeffrey Wiley | 148 | Hip, Knee |
| Dr. Neil Dion | 133 | Hip, Knee |
| Dr. Andrew Hagar | 72 | Hip, Knee |
| Dr. Karen Boselli | 52 | Shoulder |
| Dr. Stephen Fox | 48 | Knee |
| Dr. Sean Burns | 44 | 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.