Dr. Nina Shervin, M.D.
Contact & Location
207-490-7844
Kennebunk, ME 04043
Dr. Shervin performs more knee replacement procedures than 92% of orthopedic surgeons in Maine, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #2 of 26 ranked knee surgeons in Maine.
About Dr. Shervin
Practice. Dr. Nina Shervin is a board-certified orthopedic surgeon practicing in Kennebunk, Maine. The latest annual CMS data records 107 knee replacements and 76 hip replacements, 183 procedures in all. That is #2 in Maine for knee replacement. A Medicare provider since 2007.
Trend. Medicare records run from 2013 to 2024, 12 years. Volume rose from 37 procedures a year to 183, up 395%.
National context. Among 6,612 knee replacement surgeons tracked nationally, 107 procedures is more than 2x the national average of 45.
Verified Case Volume Trends (2013-Current)
| Year | Hip Replacement | Knee Replacement |
|---|---|---|
| 2013 | 13 | 24 |
| 2014 | 12 | 25 |
| 2015 | 42 | 70 |
| 2016 | 80 | 126 |
| 2017 | 109 | 118 |
| 2018 | 109 | 164 |
| 2019 | 106 | 176 |
| 2020 | 93 | 121 |
| 2021 | 96 | 144 |
| 2022 | 88 | 150 |
| 2023 | 73 | 126 |
| 2024 | 76 | 107 |
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 23% to 28% for knee replacement, 25% to 33% for hip 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. Shervin Compares
Procedure volume compared to the Maine state average.
Volume Trend Analysis
Dr. Shervin's Medicare-recorded procedure volume has trended upward over 12 years, increasing 395% from 37 procedures in 2013 to 183 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.
Prehabilitation: Preparing Your Body for SurgeryEvidence-based exercises and lifestyle adjustments that can improve surgical outcomes and speed recovery when started weeks before your procedure.
Recovery Timeline: Week-by-Week ExpectationsA detailed week-by-week guide covering pain levels, mobility milestones, physical therapy progression, and when to expect a return to daily activities.
Medicare Bundled Payment Programs for Joint ReplacementHow bundled payment models affect your joint replacement costs and care coordination, and what it means for hospital and surgeon selection.
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. Shervin
How does Dr. Shervin's procedure volume compare to other Maine surgeons?
Dr. Shervin has performed 183 Medicare-verified joint replacement procedures. This is more than 3x the Maine average of 52 procedures per surgeon. Dr. Shervin ranks #2 out of 43 orthopedic surgeons in Maine.
What types of joint replacement does Dr. Shervin perform?
Dr. Shervin's Medicare data shows procedures in knee replacement (107 cases) and hip replacement (76 cases).
How experienced is Dr. Shervin with knee replacement surgery?
Dr. Shervin ranks #2 in Maine for knee replacement with 107 Medicare-verified procedures. This high ranking among 43 state surgeons indicates significant experience with this specific procedure.
Where is Dr. Shervin's practice located?
Dr. Shervin practices in Kennebunk, Maine. The office is located at 2 Livewell Dr, Kennebunk, ME 04043. Patients in the surrounding area can consult Dr. Shervin for joint replacement evaluation.
What does the Medicare data for Dr. Shervin 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 23% to 28% for knee replacement, 25% to 33% for hip replacement, which puts Dr. Shervin's total volume across all insurers at roughly 610 to 770 procedures against the 183 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. Shervin's procedure volume changed over time?
Yes. Dr. Shervin's Medicare-recorded volume has increased from 37 procedures in 2013 to 183 in the most recent data, a 395% increase over 12 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 282 procedures in 2019.
Does Dr. Shervin perform more than one type of joint replacement?
Yes. Dr. Shervin's Medicare data shows procedures in knee replacement (107 cases), hip replacement (76 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Shervin affiliated with?
According to CMS facility affiliation data, Dr. Shervin is affiliated with Beth Israel Deaconess Hospital-Milton Inc, South Shore Hospital. Dr. Shervin maintains hospital privileges across state lines, indicating a practice that serves patients in multiple states.
What are the quality ratings for hospitals where Dr. Shervin practices?
Beth Israel Deaconess Hospital-Milton Inc (4 out of 5 CMS stars, hip/knee complication rate better than national average); South Shore Hospital (3 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.
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.