Dr. Calvin Oishi, M.D.
Dr. Calvin Oishi is a board-certified orthopedic surgeon practicing in Aiea, Hawaii. A Medicare provider since 2006, Dr. Oishi has performed 34 Medicare-verified knee replacements (#6 in Hawaii) and 15 hip replacements, for a combined total of 49 procedures.
In Hawaii, Dr. Oishi performs near average in knee (34 vs 40 avg), below average in hip (15 vs 30 avg).
Dr. Oishi's reported Medicare volume is split between knee replacements (34 cases) and hip replacements (15 cases).
Aiea is home to 2 orthopedic surgeons in the current Medicare dataset. Patients in the Aiea area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Dr. Oishi's Medicare data spans 11 years, beginning in 2013. Volume peaked at 92 procedures in 2017 before settling at 49 in the most recent data. Changes in Medicare reporting, payer mix shifts, or practice focus adjustments can all influence year-to-year volume.
Dr. Oishi's 34 knee replacement procedures is below the national average of 45 among 6,720 surgeons. Medicare data captures roughly a third of all joint replacements, so actual volume is likely higher.
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. Oishi Compares
Procedure volume compared to the Hawaii state average.
Contact & Location
Aiea, HI 96701
Verified Case Volume Trends (2013-Current)
Volume Trend Analysis
Dr. Oishi's recorded volume peaked at 92 procedures in 2017 and stood at 49 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 49 Medicare-verified joint replacement procedures. This is in line with the Hawaii average of 55 procedures per surgeon. Dr. Oishi ranks #7 out of 15 orthopedic surgeons in Hawaii.
What types of joint replacement does Dr. Oishi perform?
Dr. Oishi's Medicare data shows procedures in knee replacement (34 cases) and hip replacement (15 cases).
How experienced is Dr. Oishi with knee replacement surgery?
Dr. Oishi ranks #6 in Hawaii for knee replacement with 34 Medicare-verified procedures. This high ranking among 15 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 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. Oishi's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 49 procedures shown here.
Has Dr. Oishi's procedure volume changed over time?
Dr. Oishi's Medicare-recorded volume peaked at 92 procedures in 2017 and was 49 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. Oishi perform more than one type of joint replacement?
Yes. Dr. Oishi's Medicare data shows procedures in knee replacement (34 cases), hip replacement (15 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
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 49 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 | 13 | Hip |
Patient Reviews & Ratings
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