Dr. Calvin Oishi, M.D.
Contact & Location
808-484-2042
Aiea, HI 96701
About Dr. Oishi
Practice. Dr. Calvin Oishi is a board-certified orthopedic surgeon practicing in Aiea, Hawaii. The latest annual CMS data records 37 knee replacements. That is #5 in Hawaii for knee replacement. A Medicare provider since 2006.
Trend. Medicare records run from 2013 to 2024, 12 years. Volume peaked at 92 in 2017 and stands at 37 now. Reporting changes and payer mix can both move that number.
National context. Among 6,612 knee replacement surgeons tracked nationally, 37 procedures is near the national average of 45.
Local context. Aiea has 2 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 | 21 | 44 |
| 2014 | 29 | 58 |
| 2015 | 14 | 70 |
| 2016 | 30 | 57 |
| 2017 | 14 | 78 |
| 2018 | 14 | 61 |
| 2019 | 18 | 69 |
| 2020 | 18 | 45 |
| 2021 | 21 | 43 |
| 2022 | 17 | 33 |
| 2023 | 15 | 34 |
| 2024 | 0 | 37 |
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. 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. Oishi Compares
Procedure volume compared to the Hawaii state average.
Volume Trend Analysis
Dr. Oishi's recorded volume peaked at 92 procedures in 2017 and stood at 37 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.
Questions to Ask Your Surgeon Before Joint ReplacementA practical checklist of questions covering experience, technique, hospital choice, and recovery expectations to discuss during your surgical consultation.
Nutrition and Recovery After Joint ReplacementHow protein intake, anti-inflammatory foods, hydration, and targeted supplements support bone healing and tissue repair after surgery.
Outpatient Joint Replacement: A Medicare GuideHow outpatient joint replacement works under Medicare, including eligibility criteria, cost differences, and what to expect with same-day discharge.
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. Oishi
How does Dr. Oishi's procedure volume compare to other Hawaii surgeons?
Dr. Oishi has performed 37 Medicare-verified joint replacement procedures. The Hawaii average is 57 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Oishi ranks #11 out of 14 orthopedic surgeons in Hawaii.
What types of joint replacement does Dr. Oishi perform?
Dr. Oishi's reported Medicare volume is focused on knee replacement, with 37 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
How experienced is Dr. Oishi with knee replacement surgery?
Dr. Oishi ranks #5 in Hawaii for knee replacement with 37 Medicare-verified procedures. This high ranking among 14 state surgeons indicates significant experience with this specific procedure.
Are there other orthopedic surgeons near Dr. Oishi in Aiea?
Yes. There are 2 orthopedic surgeons in Aiea 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 Hawaii surgeons.
What does the Medicare data for Dr. Oishi 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, which puts Dr. Oishi's total volume across all insurers at roughly 130 to 160 procedures against the 37 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. Oishi's procedure volume changed over time?
Dr. Oishi's Medicare-recorded volume peaked at 92 procedures in 2017 and was 37 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.
Which hospitals is Dr. Oishi affiliated with?
According to CMS facility affiliation data, Dr. Oishi is affiliated with Kuakini Medical Center.
What are the quality ratings for hospitals where Dr. Oishi practices?
Kuakini Medical Center (4 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 Aiea, Hawaii
Dr. Oishi's 37 Medicare procedures are above the Aiea average of 31. The table below compares verified procedure volumes for orthopedic surgeons practicing in Aiea.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Mariya Opanova | 24 | 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.