Knee
Dr. Afshin Arianjam, M.D.
Dr. Afshin Arianjam is a board-certified orthopedic surgeon practicing in Chino Hills, California. A Medicare provider since 2010, Dr. Arianjam has performed 31 Medicare-verified knee replacements, ranking #237 in California.
In California, Dr. Arianjam performs below average in knee (31 vs 45 avg).
Dr. Arianjam's Medicare data shows a focused knee replacement practice with 31 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 5 years of data. Over that period, recorded procedure volume increased from 14 to 31 in the most recent data, a 121% increase. This sustained growth reflects an expanding joint replacement practice.
Dr. Arianjam's 31 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. Arianjam Compares
Procedure volume compared to the California state average.
Contact & Location
Chino Hills, CA 91709
Verified Case Volume Trends (2013-Current)
Volume Trend Analysis
Dr. Arianjam's Medicare-recorded procedure volume has trended upward over 5 years, increasing 121% from 14 procedures in 2019 to 31 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 31 Medicare-verified joint replacement procedures. The California average is 65 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Arianjam ranks #366 out of 608 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 31 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 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. Arianjam's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 31 procedures shown here.
Has Dr. Arianjam's procedure volume changed over time?
Yes. Dr. Arianjam's Medicare-recorded volume has increased from 14 procedures in 2019 to 31 in the most recent data, a 121% increase over 5 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 31 Medicare procedures are below the Chino Hills average of 34. The table below compares verified procedure volumes for orthopedic surgeons practicing in Chino Hills.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Akash Shah | 36 | Hip, Knee |
Patient Reviews & Ratings
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