Knee
Dr. Gregg Pottorff, M.D.
Dr. Gregg Pottorff is a board-certified orthopedic surgeon practicing in Castro Valley, California. A Medicare provider since 2006, Dr. Pottorff has performed 14 Medicare-verified knee replacements, ranking #439 in California.
In California, Dr. Pottorff performs below average in knee (14 vs 45 avg).
Dr. Pottorff's Medicare data shows a focused knee replacement practice with 14 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.
Castro Valley is home to 3 orthopedic surgeons in the current Medicare dataset. Patients in the Castro Valley area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Dr. Pottorff's Medicare record spans 10 years from 2014 through 2023. Procedure volume has remained consistent during that period, ranging from 11 to 17 procedures per year, reflecting a steady joint replacement practice.
Dr. Pottorff's 14 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. Pottorff Compares
Procedure volume compared to the California state average.
Contact & Location
Castro Valley, CA 94546
Verified Case Volume Trends (2013-Current)
Volume Trend Analysis
Dr. Pottorff's procedure volume has been consistent across 10 years of Medicare data, ranging from 11 to 17 procedures per year. This stability suggests a well-established joint replacement practice.
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. Pottorff
How does Dr. Pottorff's procedure volume compare to other California surgeons?
Dr. Pottorff has performed 14 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. Pottorff ranks #538 out of 608 orthopedic surgeons in California.
What types of joint replacement does Dr. Pottorff perform?
Dr. Pottorff's reported Medicare volume is focused on knee replacement, with 14 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
Are there other orthopedic surgeons near Dr. Pottorff in Castro Valley?
Yes. There are 3 orthopedic surgeons in Castro 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. Pottorff 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. Pottorff's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 14 procedures shown here.
Has Dr. Pottorff's procedure volume changed over time?
Dr. Pottorff's procedure volume has been relatively stable over 10 years of Medicare data, ranging from 11 to 17 procedures per year between 2014 and 2023. Consistent volume over multiple years reflects a steady joint replacement practice.
Which hospitals is Dr. Pottorff affiliated with?
According to CMS facility affiliation data, Dr. Pottorff is affiliated with Contra Costa Regional Medical Center, Alta Bates Summit Medical Center.
How does Dr. Pottorff compare to other orthopedic surgeons in Castro Valley?
Among the 3 orthopedic surgeons in Castro Valley, Dr. Pottorff ranks #3 by total Medicare procedure volume. Dr. Pottorff is among the highest-volume surgeons in Castro Valley.
What are the quality ratings for hospitals where Dr. Pottorff practices?
Contra Costa Regional Medical Center (3 out of 5 CMS stars); Alta Bates Summit Medical Center (5 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 Castro Valley, California
Dr. Pottorff's 14 Medicare procedures are below the Castro Valley average of 22. The table below compares verified procedure volumes for orthopedic surgeons practicing in Castro Valley.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Michael Krosin | 31 | Hip, Knee |
| Dr. Robert Martin | 20 | Knee |
Patient Reviews & Ratings
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