Dr. Timothy Mar, M.D.
Dr. Timothy Mar is a board-certified orthopedic surgeon practicing in Sacramento, California. A Medicare provider since 2005, Dr. Mar has performed 22 Medicare-verified knee replacements (#326 in California) and 14 hip replacements, for a combined total of 36 procedures.
In California, Dr. Mar performs below average in knee (22 vs 45 avg), below average in hip (14 vs 41 avg).
Dr. Mar's reported Medicare volume is split between knee replacements (22 cases) and hip replacements (14 cases).
Beyond general orthopedic surgery, Dr. Mar holds additional credentials in Adult Reconstructive Orthopaedic Surgery and Surgery, Trauma Surgery and Surgery, Surgical Oncology, reflecting subspecialty training that may benefit patients with complex joint conditions.
Sacramento is home to 31 orthopedic surgeons in the current Medicare dataset. Patients in the Sacramento area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Dr. Mar's Medicare data spans 11 years, beginning in 2013. Volume peaked at 74 procedures in 2018 before settling at 36 in the most recent data. Changes in Medicare reporting, payer mix shifts, or practice focus adjustments can all influence year-to-year volume.
Dr. Mar's 22 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. Mar Compares
Procedure volume compared to the California state average.
Contact & Location
Sacramento, CA 95816
Verified Case Volume Trends (2013-Current)
Volume Trend Analysis
Dr. Mar's recorded volume peaked at 74 procedures in 2018 and stood at 36 in the most recent data. Year-to-year variation can reflect changes in payer mix, practice scope, or Medicare billing patterns.
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. Mar
How does Dr. Mar's procedure volume compare to other California surgeons?
Dr. Mar has performed 36 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. Mar ranks #334 out of 608 orthopedic surgeons in California.
What types of joint replacement does Dr. Mar perform?
Dr. Mar's Medicare data shows procedures in knee replacement (22 cases) and hip replacement (14 cases).
Are there other orthopedic surgeons near Dr. Mar in Sacramento?
Yes. There are 31 orthopedic surgeons in Sacramento 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. Mar 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. Mar's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 36 procedures shown here.
Has Dr. Mar's procedure volume changed over time?
Dr. Mar's Medicare-recorded volume peaked at 74 procedures in 2018 and was 36 in the most recent data. Volume fluctuations can reflect changes in payer mix, practice focus, or Medicare reporting rather than a change in overall surgical activity.
Does Dr. Mar perform more than one type of joint replacement?
Yes. Dr. Mar's Medicare data shows procedures in knee replacement (22 cases), hip replacement (14 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Mar affiliated with?
According to CMS facility affiliation data, Dr. Mar is affiliated with Sutter Medical Center, Sacramento, Mercy General Hospital, Sutter Roseville Medical Center, Sutter Amador Hospital.
How does Dr. Mar compare to other orthopedic surgeons in Sacramento?
Among the 31 orthopedic surgeons in Sacramento, Dr. Mar ranks #16 by total Medicare procedure volume. The highest-volume surgeon in Sacramento has 220 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Mar practices?
Sutter Medical Center, Sacramento (4 out of 5 CMS stars, hip/knee complication rate similar to national average); Mercy General Hospital (4 out of 5 CMS stars, hip/knee complication rate similar to national average); Sutter Roseville Medical Center (3 out of 5 CMS stars, hip/knee complication rate above national average). These are hospital-level quality metrics from CMS Hospital Compare and do not reflect individual surgeon outcomes.
Other Orthopedic Surgeons in Sacramento, California
Dr. Mar's 36 Medicare procedures are below the Sacramento average of 108. The table below compares verified procedure volumes for orthopedic surgeons practicing in Sacramento.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Stephen Howell | 220 | Knee |
| Dr. Alexander Nedopil | 135 | Hip, Knee |
| Dr. Mauro Giordani | 100 | Hip, Knee |
| Dr. John Meehan | 95 | Hip, Knee |
| Dr. Gavin Pereira | 87 | Hip, Knee |
| Dr. Parker Goodell | 83 | Hip, Knee |
Patient Reviews & Ratings
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