Dr. Ghassan Tooma, MD
Contact & Location
951-735-6060
Corona, CA 92879
About Dr. Tooma
Dr. Ghassan Tooma is a board-certified orthopedic surgeon practicing in Corona, California. A Medicare provider since 2006, Dr. Tooma performed 22 Medicare-verified knee replacements in the latest annual CMS data, ranking #327 in California.
In California, Dr. Tooma performs below the state average in knee (22 vs 47).
Dr. Tooma's Medicare data shows a focused knee replacement practice with 22 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.
Corona is home to 4 orthopedic surgeons in the current Medicare dataset. Patients in the Corona area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Tooma extend back to 2014, covering 5 years of data. Over that period, recorded procedure volume increased from 12 to 22 in the most recent data, a 83% increase. This sustained growth reflects an expanding joint replacement practice.
Dr. Tooma's 22 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 | Knee Replacement |
|---|---|
| 2013 | 0 |
| 2014 | 12 |
| 2015 | 0 |
| 2016 | 0 |
| 2017 | 13 |
| 2018 | 0 |
| 2019 | 18 |
| 2020 | 0 |
| 2021 | 0 |
| 2022 | 0 |
| 2023 | 23 |
| 2024 | 22 |
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. Tooma Compares
Procedure volume compared to the California state average.
Volume Trend Analysis
Dr. Tooma's Medicare-recorded procedure volume has trended upward over 5 years, increasing 83% from 12 procedures in 2014 to 22 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.
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.
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. Tooma
How does Dr. Tooma's procedure volume compare to other California surgeons?
Dr. Tooma has performed 22 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. Tooma ranks #453 out of 613 orthopedic surgeons in California.
What types of joint replacement does Dr. Tooma perform?
Dr. Tooma's reported Medicare volume is focused on knee replacement, with 22 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
Are there other orthopedic surgeons near Dr. Tooma in Corona?
Yes. There are 4 orthopedic surgeons in Corona 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. Tooma 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. Tooma's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 22 procedures shown here.
Has Dr. Tooma's procedure volume changed over time?
Yes. Dr. Tooma's Medicare-recorded volume has increased from 12 procedures in 2014 to 22 in the most recent data, a 83% increase over 5 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 23 procedures in 2023.
Which hospitals is Dr. Tooma affiliated with?
According to CMS facility affiliation data, Dr. Tooma is affiliated with Corona Regional Medical Center, Southwest Healthcare Rancho Springs Hospital.
How does Dr. Tooma compare to other orthopedic surgeons in Corona?
Among the 4 orthopedic surgeons in Corona, Dr. Tooma ranks #2 by total Medicare procedure volume. Dr. Tooma is among the highest-volume surgeons in Corona.
What are the quality ratings for hospitals where Dr. Tooma practices?
Corona Regional Medical Center (3 out of 5 CMS stars, insufficient case volume for complication rate comparison); Southwest Healthcare Rancho Springs 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 Corona, California
Dr. Tooma's 22 Medicare procedures are below the Corona average of 26. The table below compares verified procedure volumes for orthopedic surgeons practicing in Corona.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Bradley Baum | 50 | Hip, Knee |
| Dr. Reza Roghani | 20 | Shoulder |
| Dr. Eli Sayegh | 11 | Shoulder |
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.