#346 in California
Knee

Dr. Robert Martin, M.D.

Orthopedic Surgery
20 procedures 1 hospital Castro Valley, CA
Latest available Medicare data — updated April 2026
Knee replacement recovery kit Ice machines, mobility aids, bathroom safety — under $50 essentials
National Comparison by Procedure
Knee 20 vs 45 avg (6,720 surgeons)

Dr. Robert Martin is a board-certified orthopedic surgeon practicing in Castro Valley, California. A Medicare provider since 2006, Dr. Martin has performed 20 Medicare-verified knee replacements, ranking #346 in California.

In California, Dr. Martin performs below average in knee (20 vs 45 avg).

Dr. Martin's Medicare data shows a focused knee replacement practice with 20 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. Martin's Medicare record spans 11 years from 2013 through 2023. Procedure volume has remained consistent during that period, ranging from 13 to 27 procedures per year, reflecting a steady joint replacement practice.

Dr. Martin'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

Knee Replacement
20 verified cases
#346 in California
Estimated total: 50 – 60 procedures (all insurers)
Based on Medicare FFS representing 33–37% of national joint replacement volume
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. Martin Compares

Procedure volume compared to the California state average.

Knee Below Avg
20 Avg: 45
Dr. Martin California Average

Contact & Location

Phone: 510-247-8281
21030 Redwood Rd
Castro Valley, CA 94546
NPI: 1356318794
Credentials: M.D.
Active Medicare provider (NPI verified)
20 years of practice experience
Licensed M.D.
Licensed surgical specialist
Board-certified orthopedic surgeon
Contact information available
Find Practice on Google Maps

Volume Trend Analysis

Dr. Martin's procedure volume has been consistent across 11 years of Medicare data, ranging from 13 to 27 procedures per year. This stability suggests a well-established joint replacement practice.

Years of Data 11
2023 Volume 20
Peak Volume 27 (2021)
Trend Stable

Hospital Affiliations & Quality

H
Eden Medical Center
★★★★☆
Castro Valley, CA
Similar to national avg

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.

Knee Replacement Recovery Overview

Recovery timelines vary by patient, but here is a general overview of what to expect after knee replacement surgery:

Week 1-2 Walking with assistive device. Knee bending exercises begin immediately. Ice therapy and elevation for swelling control.
Week 3-6 Increased range of motion (target 90 degrees). Walking longer distances. Physical therapy intensifies with strengthening exercises.
Week 7-12 Most patients walk without assistive devices. Resume driving and desk work. Continue PT for strength and flexibility.
Month 4-6 Near-full recovery. Resume most recreational activities. Some swelling and stiffness may persist but continues improving.

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. Martin

How does Dr. Martin's procedure volume compare to other California surgeons?

Dr. Martin has performed 20 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. Martin ranks #453 out of 608 orthopedic surgeons in California.

What types of joint replacement does Dr. Martin perform?

Dr. Martin's reported Medicare volume is focused on knee replacement, with 20 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.

Are there other orthopedic surgeons near Dr. Martin 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. Martin 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. Martin's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 20 procedures shown here.

Has Dr. Martin's procedure volume changed over time?

Dr. Martin's procedure volume has been relatively stable over 11 years of Medicare data, ranging from 13 to 27 procedures per year between 2013 and 2023. Consistent volume over multiple years reflects a steady joint replacement practice.

Which hospitals is Dr. Martin affiliated with?

According to CMS facility affiliation data, Dr. Martin is affiliated with Eden Medical Center.

How does Dr. Martin compare to other orthopedic surgeons in Castro Valley?

Among the 3 orthopedic surgeons in Castro Valley, Dr. Martin ranks #2 by total Medicare procedure volume. Dr. Martin is among the highest-volume surgeons in Castro Valley.

What are the quality ratings for hospitals where Dr. Martin practices?

Eden Medical Center (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.

Other Orthopedic Surgeons in Castro Valley, California

Dr. Martin's 20 Medicare procedures are below the Castro Valley average of 22. The table below compares verified procedure volumes for orthopedic surgeons practicing in Castro Valley.

SurgeonProceduresSpecialties
Dr. Michael Krosin 31 Hip, Knee
Dr. Gregg Pottorff 14 Knee

Patient Reviews & Ratings

OrthoProcedures.com focuses on verified Medicare procedure data. For patient reviews, ratings, and appointment scheduling, visit these trusted platforms:

These links lead to third-party websites. OrthoProcedures.com is not affiliated with these platforms and cannot verify the accuracy of reviews.

Cite This Data

APA: OrthoProcedures. (2026). Dr. Robert Martin, M.D. -- Orthopedic Surgeon Profile. Retrieved from https://orthoprocedures.com/surgeons/ca/dr-robert-martin-castro-valley.html

Link: https://orthoprocedures.com/surgeons/ca/dr-robert-martin-castro-valley.html

Data source: CMS Medicare Part B Provider Utilization & Payment Data. Full methodology | Open Data API

Important: Rankings are based solely on Medicare procedure volume and do not reflect quality of care, patient outcomes, or procedures covered by private insurance. This data represents approximately one-third to 40% of all joint replacement procedures nationwide. Always consult with healthcare providers to make informed decisions about your care.