Dr. Michael Krosin, MD
Dr. Michael Krosin is a board-certified orthopedic surgeon practicing in Castro Valley, California. A Medicare provider since 2009, Dr. Krosin has performed 20 Medicare-verified knee replacements (#348 in California) and 11 hip replacements, for a combined total of 31 procedures.
In California, Dr. Krosin performs below average in knee (20 vs 45 avg), below average in hip (11 vs 41 avg).
Dr. Krosin's reported Medicare volume is split between knee replacements (20 cases) and hip replacements (11 cases).
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. Krosin first appears in the Medicare dataset in 2023. With 1 year of recorded data, the longitudinal trend is still developing.
Dr. Krosin's 20 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. Krosin Compares
Procedure volume compared to the California state average.
Contact & Location
Castro Valley, CA 94546
Verified Case Volume Trends (2013-Current)
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.
Nutrition and Recovery After Joint ReplacementHow protein intake, anti-inflammatory foods, hydration, and targeted supplements support bone healing and tissue repair after surgery.
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. Krosin
How does Dr. Krosin's procedure volume compare to other California surgeons?
Dr. Krosin 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. Krosin ranks #365 out of 608 orthopedic surgeons in California.
What types of joint replacement does Dr. Krosin perform?
Dr. Krosin's Medicare data shows procedures in knee replacement (20 cases) and hip replacement (11 cases).
Are there other orthopedic surgeons near Dr. Krosin 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. Krosin 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. Krosin's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 31 procedures shown here.
Does Dr. Krosin perform more than one type of joint replacement?
Yes. Dr. Krosin's Medicare data shows procedures in knee replacement (20 cases), hip replacement (11 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Krosin affiliated with?
According to CMS facility affiliation data, Dr. Krosin is affiliated with Eden Medical Center, Highland Hospital.
How does Dr. Krosin compare to other orthopedic surgeons in Castro Valley?
Among the 3 orthopedic surgeons in Castro Valley, Dr. Krosin ranks #1 by total Medicare procedure volume. Dr. Krosin has the highest verified Medicare volume in the city.
What are the quality ratings for hospitals where Dr. Krosin practices?
Eden Medical Center (4 out of 5 CMS stars, hip/knee complication rate similar to national average); Highland Hospital (1 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 Castro Valley, California
Dr. Krosin's 31 Medicare procedures are above the Castro Valley average of 22. The table below compares verified procedure volumes for orthopedic surgeons practicing in Castro Valley.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Robert Martin | 20 | Knee |
| Dr. Gregg Pottorff | 14 | Knee |
Patient Reviews & Ratings
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