Dr. Afshin Arianjam, M.D.
Contact & Location
909-788-1900
Chino Hills, CA 91709
Dr. Arianjam performs more knee replacement procedures than 30% of orthopedic surgeons in California, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #343 of 491 ranked knee surgeons in California.
About Dr. Arianjam
Dr. Afshin Arianjam is a board-certified orthopedic surgeon practicing in Chino Hills, California. A Medicare provider since 2010, Dr. Arianjam performed 20 Medicare-verified knee replacements in the latest annual CMS data, ranking #343 in California.
In California, Dr. Arianjam performs below the state average in knee (20 vs 47).
Dr. Arianjam's Medicare data shows a focused knee replacement practice with 20 verified procedures. Surgeons who concentrate on a single procedure type often develop deep procedural expertise, though total practice volume may include additional procedures not captured in Medicare fee-for-service data.
Beyond general orthopedic surgery, Dr. Arianjam holds additional credentials in Sports Medicine, reflecting subspecialty training that may benefit patients with complex joint conditions.
Chino Hills is home to 2 orthopedic surgeons in the current Medicare dataset. Patients in the Chino Hills area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Arianjam extend back to 2019, covering 6 years of data. Over that period, recorded procedure volume increased from 14 to 20 in the most recent data, a 43% increase. This sustained growth reflects an expanding joint replacement practice.
Dr. Arianjam's 20 knee replacement procedures is below the national average of 45 among 6,612 surgeons. Medicare data captures roughly a third of all joint replacements, so actual volume is likely higher.
Verified Case Volume Trends (2013-Current)
| Year | Knee Replacement |
|---|---|
| 2013 | 0 |
| 2014 | 0 |
| 2015 | 0 |
| 2016 | 0 |
| 2017 | 0 |
| 2018 | 0 |
| 2019 | 14 |
| 2020 | 14 |
| 2021 | 13 |
| 2022 | 22 |
| 2023 | 31 |
| 2024 | 20 |
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. Arianjam Compares
Procedure volume compared to the California state average.
Volume Trend Analysis
Dr. Arianjam's Medicare-recorded procedure volume has trended upward over 6 years, increasing 43% from 14 procedures in 2019 to 20 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.
What to Expect on the Day of SurgeryA step-by-step walkthrough of your surgical day, from pre-op preparation through anesthesia, the procedure itself, and the first hours of recovery.
Rehabilitation Roadmap: Your Complete Recovery GuideA structured physical therapy progression from the first post-op exercises through full strength and mobility restoration over 3 to 6 months.
Medicare Coverage for Joint ReplacementWhat Medicare Part A and Part B cover for joint replacement surgery, including hospital stays, surgeon fees, anesthesia, and physical therapy.
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. Arianjam
How does Dr. Arianjam's procedure volume compare to other California surgeons?
Dr. Arianjam has performed 20 Medicare-verified joint replacement procedures. The California average is 68 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Arianjam ranks #466 out of 613 orthopedic surgeons in California.
What types of joint replacement does Dr. Arianjam perform?
Dr. Arianjam's reported Medicare volume is focused on knee replacement, with 20 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
Are there other orthopedic surgeons near Dr. Arianjam in Chino Hills?
Yes. There are 2 orthopedic surgeons in Chino Hills 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 California surgeons.
What does the Medicare data for Dr. Arianjam 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. Arianjam's total volume across all insurers at roughly 70 to 90 procedures against the 20 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. Arianjam's procedure volume changed over time?
Yes. Dr. Arianjam's Medicare-recorded volume has increased from 14 procedures in 2019 to 20 in the most recent data, a 43% increase over 6 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 31 procedures in 2023.
Which hospitals is Dr. Arianjam affiliated with?
According to CMS facility affiliation data, Dr. Arianjam is affiliated with Pomona Valley Hospital Medical Center, San Antonio Regional Hospital.
What are the quality ratings for hospitals where Dr. Arianjam practices?
Pomona Valley Hospital Medical Center (3 out of 5 CMS stars, hip/knee complication rate similar to national average); San Antonio Regional 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 Chino Hills, California
Dr. Arianjam's 20 Medicare procedures are below the Chino Hills average of 32. The table below compares verified procedure volumes for orthopedic surgeons practicing in Chino Hills.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Akash Shah | 44 | 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.