Dr. Sepein Chiang, DO
Contact & Location
623-537-5600
Phoenix, AZ 85023
About Dr. Chiang
Dr. Sepein Chiang is a board-certified orthopedic surgeon practicing in Phoenix, Arizona. A Medicare provider since 2006, Dr. Chiang performed 35 Medicare-verified knee replacements (#75 in Arizona) and 22 hip replacements in the latest annual CMS data, for a combined total of 57 procedures.
In Arizona, Dr. Chiang performs below the state average in knee (35 vs 49), below the state average in hip (22 vs 40).
Dr. Chiang's reported Medicare volume is split between knee replacements (35 cases) and hip replacements (22 cases).
Phoenix is home to 51 orthopedic surgeons in the current Medicare dataset. Patients in the Phoenix area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Chiang extend back to 2016, covering 8 years of data. Over that period, recorded procedure volume increased from 12 to 57 in the most recent data, a 375% increase. This sustained growth reflects an expanding joint replacement practice.
Dr. Chiang's 35 knee replacement procedures is below the national average of 45 among 6,599 surgeons. Medicare data captures roughly a third of all joint replacements, so actual volume is likely higher.
Verified Case Volume Trends (2013-Current)
| Year | Hip Replacement | Knee Replacement |
|---|---|---|
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 12 |
| 2017 | 0 | 0 |
| 2018 | 0 | 21 |
| 2019 | 0 | 16 |
| 2020 | 12 | 25 |
| 2021 | 20 | 43 |
| 2022 | 18 | 57 |
| 2023 | 0 | 38 |
| 2024 | 22 | 35 |
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. Chiang Compares
Procedure volume compared to the Arizona state average.
Volume Trend Analysis
Dr. Chiang's Medicare-recorded procedure volume has trended upward over 8 years, increasing 375% from 12 procedures in 2016 to 57 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.
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. Chiang
How does Dr. Chiang's procedure volume compare to other Arizona surgeons?
Dr. Chiang has performed 57 Medicare-verified joint replacement procedures. The Arizona average is 72 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Chiang ranks #94 out of 191 orthopedic surgeons in Arizona.
What types of joint replacement does Dr. Chiang perform?
Dr. Chiang's Medicare data shows procedures in knee replacement (35 cases) and hip replacement (22 cases).
Are there other orthopedic surgeons near Dr. Chiang in Phoenix?
Yes. There are 51 orthopedic surgeons in Phoenix 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 Arizona surgeons.
What does the Medicare data for Dr. Chiang 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. Chiang's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 57 procedures shown here.
Has Dr. Chiang's procedure volume changed over time?
Yes. Dr. Chiang's Medicare-recorded volume has increased from 12 procedures in 2016 to 57 in the most recent data, a 375% increase over 8 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 75 procedures in 2022.
Does Dr. Chiang perform more than one type of joint replacement?
Yes. Dr. Chiang's Medicare data shows procedures in knee replacement (35 cases), hip replacement (22 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Chiang affiliated with?
According to CMS facility affiliation data, Dr. Chiang is affiliated with The Core Institute Specialty Hospital.
How does Dr. Chiang compare to other orthopedic surgeons in Phoenix?
Among the 51 orthopedic surgeons in Phoenix, Dr. Chiang ranks #25 by total Medicare procedure volume. The highest-volume surgeon in Phoenix has 234 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Chiang practices?
The Core Institute Specialty Hospital (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 Phoenix, Arizona
Dr. Chiang's 57 Medicare procedures are below the Phoenix average of 142. The table below compares verified procedure volumes for orthopedic surgeons practicing in Phoenix.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Steven Werner | 234 | Hip, Knee |
| Dr. Christina Khoury | 152 | Hip, Knee |
| Dr. Steven Hattrup | 147 | Shoulder |
| Dr. Michael Wilmink | 144 | Hip, Knee |
| Dr. Kenneth Schmidt | 135 | Hip, Knee |
| Dr. Lige Kaplan | 128 | 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.