Dr. Michael Vanmanen, DO
Contact & Location
Twentynine Palms, CA 92278
Dr. Michael Vanmanen is a board-certified orthopedic surgeon practicing in Twentynine Palms, California. Dr. Vanmanen has performed 32 Medicare-verified knee replacements (#242 in California) and 24 hip replacements, for a combined total of 56 procedures.
In California, Dr. Vanmanen performs below average in knee (32 vs 47 avg), below average in hip (24 vs 41 avg).
Dr. Vanmanen's reported Medicare volume is split between knee replacements (32 cases) and hip replacements (24 cases).
Dr. Vanmanen is the only orthopedic surgeon in Twentynine Palms represented in the current Medicare dataset, serving as the primary local option for patients considering joint replacement surgery in the area.
Medicare records for Dr. Vanmanen extend back to 2019, covering 5 years of data. Over that period, recorded procedure volume increased from 18 to 56 in the most recent data, a 211% increase. This sustained growth reflects an expanding joint replacement practice.
Dr. Vanmanen's 32 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)
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. Vanmanen Compares
Procedure volume compared to the California state average.
Volume Trend Analysis
Dr. Vanmanen's Medicare-recorded procedure volume has trended upward over 5 years, increasing 211% from 18 procedures in 2019 to 56 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. Vanmanen
How does Dr. Vanmanen's procedure volume compare to other California surgeons?
Dr. Vanmanen has performed 56 Medicare-verified joint replacement procedures. This is in line with the California average of 68 procedures per surgeon. Dr. Vanmanen ranks #245 out of 613 orthopedic surgeons in California.
What types of joint replacement does Dr. Vanmanen perform?
Dr. Vanmanen's Medicare data shows procedures in knee replacement (32 cases) and hip replacement (24 cases).
Where is Dr. Vanmanen's practice located?
Dr. Vanmanen practices in Twentynine Palms, California. The office is located at Bldg 1145 Sturgis Rd, Twentynine Palms, CA 92278. Patients in the surrounding area can consult Dr. Vanmanen for joint replacement evaluation.
What does the Medicare data for Dr. Vanmanen 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. Vanmanen's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 56 procedures shown here.
Has Dr. Vanmanen's procedure volume changed over time?
Yes. Dr. Vanmanen's Medicare-recorded volume has increased from 18 procedures in 2019 to 56 in the most recent data, a 211% increase over 5 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 56 procedures in 2024.
Does Dr. Vanmanen perform more than one type of joint replacement?
Yes. Dr. Vanmanen's Medicare data shows procedures in knee replacement (32 cases), hip replacement (24 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Vanmanen affiliated with?
According to CMS facility affiliation data, Dr. Vanmanen is affiliated with Penrose Hospital. Dr. Vanmanen maintains hospital privileges across state lines, indicating a practice that serves patients in multiple states.
What are the quality ratings for hospitals where Dr. Vanmanen practices?
Penrose Hospital (4 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.
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.