Dr. Nolan Maher, M.D.
Contact & Location
212-523-4000
New York, NY 10019
Dr. Maher performs more knee replacement procedures than 60% of orthopedic surgeons in New York, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #106 of 269 ranked knee surgeons in New York.
About Dr. Maher
Practice. Dr. Nolan Maher is a board-certified orthopedic surgeon practicing in New York, New York. The latest annual CMS data records 36 knee replacements and 22 hip replacements, 58 procedures in all. That is #106 in New York for knee replacement.
Trend. Medicare records run from 2021 to 2024, 4 years. Volume rose from 14 procedures a year to 58, up 314%.
National context. Among 6,612 knee replacement surgeons tracked nationally, 36 procedures is near the national average of 45.
Local context. New York has 84 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 | Hip Replacement | Knee Replacement |
|---|---|---|
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 14 | 0 |
| 2022 | 16 | 17 |
| 2023 | 16 | 21 |
| 2024 | 22 | 36 |
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. Maher Compares
Procedure volume compared to the New York state average.
Volume Trend Analysis
Dr. Maher's Medicare-recorded procedure volume has trended upward over 4 years, increasing 314% from 14 procedures in 2021 to 58 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.
Nutrition and Recovery After Joint ReplacementHow protein intake, anti-inflammatory foods, hydration, and targeted supplements support bone healing and tissue repair after surgery.
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. Maher
How does Dr. Maher's procedure volume compare to other New York surgeons?
Dr. Maher has performed 58 Medicare-verified joint replacement procedures. This is in line with the New York average of 69 procedures per surgeon. Dr. Maher ranks #124 out of 334 orthopedic surgeons in New York.
What types of joint replacement does Dr. Maher perform?
Dr. Maher's Medicare data shows procedures in knee replacement (36 cases) and hip replacement (22 cases).
Are there other orthopedic surgeons near Dr. Maher in New York?
Yes. There are 84 orthopedic surgeons in New York 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 York surgeons.
What does the Medicare data for Dr. Maher 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. Maher's total volume across all insurers at roughly 200 to 240 procedures against the 58 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. Maher's procedure volume changed over time?
Yes. Dr. Maher's Medicare-recorded volume has increased from 14 procedures in 2021 to 58 in the most recent data, a 314% increase over 4 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 58 procedures in 2024.
Does Dr. Maher perform more than one type of joint replacement?
Yes. Dr. Maher's Medicare data shows procedures in knee replacement (36 cases), hip replacement (22 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Maher affiliated with?
According to CMS facility affiliation data, Dr. Maher is affiliated with Mount Sinai West.
How does Dr. Maher compare to other orthopedic surgeons in New York?
Among the 84 orthopedic surgeons in New York, Dr. Maher ranks #39 by total Medicare procedure volume. The highest-volume surgeon in New York has 343 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Maher practices?
Mount Sinai West (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.
Other Orthopedic Surgeons in New York, New York
Dr. Maher's 58 Medicare procedures are below the New York average of 267. The table below compares verified procedure volumes for orthopedic surgeons practicing in New York.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Brian Chalmers | 343 | Hip, Knee |
| Dr. Jason Blevins | 322 | Hip, Knee |
| Dr. Eytan Debbi | 322 | Hip, Knee |
| Dr. Amar Ranawat | 318 | Hip, Knee |
| Dr. Geoffrey Westrich | 276 | Hip, Knee |
| Dr. Elizabeth Gausden | 229 | 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.