Dr. Christopher Ninh, MD
Contact & Location
714-432-9990
Fountain Valley, CA 92708
About Dr. Ninh
Dr. Christopher Ninh is a board-certified orthopedic surgeon practicing in Fountain Valley, California. A Medicare provider since 2007, Dr. Ninh performed 48 Medicare-verified knee replacements in the latest annual CMS data, ranking #154 in California.
In California, Dr. Ninh performs near the state average in knee (48 vs 47).
Dr. Ninh's Medicare data shows a focused knee replacement practice with 48 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.
Fountain Valley is home to 6 orthopedic surgeons in the current Medicare dataset. Patients in the Fountain Valley area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Ninh extend back to 2013, covering 12 years of data. Over that period, recorded procedure volume increased from 23 to 48 in the most recent data, a 109% increase. This sustained growth reflects an expanding joint replacement practice.
Among 6,599 knee replacement surgeons tracked nationally, Dr. Ninh's 48 verified procedures is near the national average of 45.
Verified Case Volume Trends (2013-Current)
| Year | Hip Replacement | Knee Replacement |
|---|---|---|
| 2013 | 0 | 23 |
| 2014 | 0 | 19 |
| 2015 | 0 | 17 |
| 2016 | 0 | 28 |
| 2017 | 0 | 27 |
| 2018 | 0 | 38 |
| 2019 | 0 | 32 |
| 2020 | 11 | 20 |
| 2021 | 0 | 33 |
| 2022 | 0 | 53 |
| 2023 | 0 | 49 |
| 2024 | 0 | 48 |
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. Ninh Compares
Procedure volume compared to the California state average.
Volume Trend Analysis
Dr. Ninh's Medicare-recorded procedure volume has trended upward over 12 years, increasing 109% from 23 procedures in 2013 to 48 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.
Recovery Timeline: Week-by-Week ExpectationsA detailed week-by-week guide covering pain levels, mobility milestones, physical therapy progression, and when to expect a return to daily activities.
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. Ninh
How does Dr. Ninh's procedure volume compare to other California surgeons?
Dr. Ninh has performed 48 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. Ninh ranks #280 out of 613 orthopedic surgeons in California.
What types of joint replacement does Dr. Ninh perform?
Dr. Ninh's reported Medicare volume is focused on knee replacement, with 48 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
Are there other orthopedic surgeons near Dr. Ninh in Fountain Valley?
Yes. There are 6 orthopedic surgeons in Fountain Valley 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. Ninh 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. Ninh's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 48 procedures shown here.
Has Dr. Ninh's procedure volume changed over time?
Yes. Dr. Ninh's Medicare-recorded volume has increased from 23 procedures in 2013 to 48 in the most recent data, a 109% increase over 12 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 53 procedures in 2022.
Which hospitals is Dr. Ninh affiliated with?
According to CMS facility affiliation data, Dr. Ninh is affiliated with Uci Health-Orange, Memorialcare Orange Coast Medical Center, Chapman Global Medical Center, Providence St. Joseph Hospital, Hoag Memorial Hospital Presbyterian.
How does Dr. Ninh compare to other orthopedic surgeons in Fountain Valley?
Among the 6 orthopedic surgeons in Fountain Valley, Dr. Ninh ranks #2 by total Medicare procedure volume. Dr. Ninh is among the highest-volume surgeons in Fountain Valley.
What are the quality ratings for hospitals where Dr. Ninh practices?
Uci Health-Orange (4 out of 5 CMS stars, hip/knee complication rate similar to national average); Memorialcare Orange Coast Medical Center (3 out of 5 CMS stars, insufficient case volume for complication rate comparison); Chapman Global Medical Center (1 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 Fountain Valley, California
Dr. Ninh's 48 Medicare procedures are above the Fountain Valley average of 30. The table below compares verified procedure volumes for orthopedic surgeons practicing in Fountain Valley.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Nikhil Chokshi | 74 | Hip, Knee |
| Dr. Ramy Elias | 17 | Knee |
| Dr. Trong Nguyen | 14 | Knee |
| Dr. Ryan Fan | 14 | Knee |
| Dr. Trieu Tran | 13 | 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.