Dr. Thomas King, M.D.
Contact & Location
603-431-5858
Portsmouth, NH 03801
Dr. King performs more knee replacement procedures than 95% of orthopedic surgeons in New Hampshire, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #2 of 41 ranked knee surgeons in New Hampshire.
About Dr. King
Practice. Dr. Thomas King is a board-certified orthopedic surgeon practicing in Portsmouth, New Hampshire. The latest annual CMS data records 97 knee replacements and 12 hip replacements, 109 procedures in all. That is #2 in New Hampshire for knee replacement. A Medicare provider since 2005.
Trend. Medicare records run from 2013 to 2024, 12 years. Volume peaked at 193 in 2018 and stands at 109 now. Reporting changes and payer mix can both move that number.
National context. Among 6,612 knee replacement surgeons tracked nationally, 97 procedures is more than 2x the national average of 45.
Local context. Portsmouth has 5 orthopedic surgeons in the current Medicare data. Comparing volume and procedure mix across them is one way to narrow a shortlist. Dr. King also holds hospital privileges in NH and ME, a practice that extends beyond New Hampshire.
Verified Case Volume Trends (2013-Current)
| Year | Hip Replacement | Knee Replacement |
|---|---|---|
| 2013 | 38 | 129 |
| 2014 | 39 | 121 |
| 2015 | 37 | 147 |
| 2016 | 44 | 143 |
| 2017 | 47 | 133 |
| 2018 | 43 | 150 |
| 2019 | 35 | 140 |
| 2020 | 22 | 79 |
| 2021 | 29 | 106 |
| 2022 | 19 | 88 |
| 2023 | 16 | 93 |
| 2024 | 12 | 97 |
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. King Compares
Procedure volume compared to the New Hampshire state average.
Volume Trend Analysis
Dr. King's recorded volume peaked at 193 procedures in 2018 and stood at 109 in the most recent data. Year-to-year variation can reflect changes in payer mix, practice scope, or Medicare billing patterns.
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.
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 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. King
How does Dr. King's procedure volume compare to other New Hampshire surgeons?
Dr. King has performed 109 Medicare-verified joint replacement procedures. This is significantly above the New Hampshire average of 68 procedures per surgeon. Dr. King ranks #13 out of 56 orthopedic surgeons in New Hampshire.
What types of joint replacement does Dr. King perform?
Dr. King's Medicare data shows procedures in knee replacement (97 cases) and hip replacement (12 cases).
How experienced is Dr. King with knee replacement surgery?
Dr. King ranks #2 in New Hampshire for knee replacement with 97 Medicare-verified procedures. This high ranking among 56 state surgeons indicates significant experience with this specific procedure.
Are there other orthopedic surgeons near Dr. King in Portsmouth?
Yes. There are 5 orthopedic surgeons in Portsmouth 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. King 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. King's total volume across all insurers at roughly 380 to 470 procedures against the 109 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. King's procedure volume changed over time?
Dr. King's Medicare-recorded volume peaked at 193 procedures in 2018 and was 109 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. King perform more than one type of joint replacement?
Yes. Dr. King's Medicare data shows procedures in knee replacement (97 cases), hip replacement (12 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. King affiliated with?
According to CMS facility affiliation data, Dr. King is affiliated with Portsmouth Regional Hospital, Wentworth-Douglass Hospital, York Hospital, Huggins Hospital, Exeter Hospital Inc. Dr. King maintains hospital privileges across state lines, indicating a practice that serves patients in multiple states.
How does Dr. King compare to other orthopedic surgeons in Portsmouth?
Among the 5 orthopedic surgeons in Portsmouth, Dr. King ranks #3 by total Medicare procedure volume. Dr. King is among the highest-volume surgeons in Portsmouth.
What are the quality ratings for hospitals where Dr. King practices?
Portsmouth Regional Hospital (3 out of 5 CMS stars, hip/knee complication rate similar to national average); Wentworth-Douglass Hospital (4 out of 5 CMS stars, hip/knee complication rate similar to national average); York Hospital (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 Portsmouth, New Hampshire
Dr. King's 109 Medicare procedures are above the Portsmouth average of 88. The table below compares verified procedure volumes for orthopedic surgeons practicing in Portsmouth.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Akhilesh Sastry | 137 | Hip, Knee |
| Dr. Michael Morwood | 125 | Hip, Knee |
| Dr. Mayo Noerdlinger | 57 | Shoulder |
| Dr. William Sutherland | 12 | Hip |
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.