#90 Hip
#165 Knee

Dr. Christopher Chen, MD

Orthopedic Surgery
90 procedures 2 hospitals Berkeley, CA
Latest available Medicare data — updated April 2026
Hip replacement recovery kit Essentials every patient wishes they bought first
National Comparison by Procedure
Hip 47 vs 36 avg (4,526 surgeons)
Knee 43 vs 45 avg (6,720 surgeons)

Dr. Christopher Chen is a board-certified orthopedic surgeon practicing in Berkeley, California. A Medicare provider since 2005, Dr. Chen has performed 47 Medicare-verified hip replacements (#90 in California) and 43 knee replacements, for a combined total of 90 procedures.

In California, Dr. Chen performs near average in hip (47 vs 41 avg), near average in knee (43 vs 45 avg).

Dr. Chen's reported Medicare volume is split between hip replacements (47 cases) and knee replacements (43 cases).

Berkeley is home to 3 orthopedic surgeons in the current Medicare dataset. Patients in the Berkeley area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.

Dr. Chen's Medicare record spans 11 years from 2013 through 2023. Procedure volume has remained consistent during that period, ranging from 57 to 110 procedures per year, reflecting a steady joint replacement practice.

Among 4,526 hip replacement surgeons tracked nationally, Dr. Chen's 47 verified procedures is above the national average of 36.

Verified Medicare Cases

Hip Replacement
47 verified cases
#90 in California
Knee Replacement
43 verified cases
#165 in California
Estimated total: 240 – 270 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. Chen Compares

Procedure volume compared to the California state average.

Hip Average
47 Avg: 41
Knee Average
43 Avg: 45
Dr. Chen California Average

Contact & Location

Phone: 510-647-1200
3000 Colby St
Berkeley, CA 94705
NPI: 1396734505
Credentials: MD
Active Medicare provider (NPI verified)
21 years of practice experience
Licensed MD
Licensed surgical specialist
Board-certified orthopedic surgeon
Contact information available
Find Practice on Google Maps

Volume Trend Analysis

Dr. Chen's procedure volume has been consistent across 11 years of Medicare data, ranging from 57 to 110 procedures per year. This stability suggests a well-established joint replacement practice.

Years of Data 11
2023 Volume 90
Peak Volume 110 (2017)
Trend Stable

Hospital Affiliations & Quality

H
Alta Bates Summit Medical Center - Alta Bates Camp
★★★☆☆
Berkeley, CA
Similar to national avg
H
Alta Bates Summit Medical Center
★★★★★
Oakland, 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.

Hip Replacement Recovery Overview

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

Week 1-2 Walking with assistive device (walker or cane). Gentle range-of-motion exercises begin. Most patients can manage basic self-care.
Week 3-6 Transition to walking independently. Resume driving short distances. Physical therapy focuses on strength and balance.
Week 7-12 Return to most daily activities and light exercise. Stair climbing improves. Many patients return to desk work.
Month 4-6 Full recovery for most patients. Resume recreational activities, golf, swimming, and low-impact exercise.

Individual recovery varies based on overall health, age, and adherence to physical therapy. View full hip replacement recovery guide and product recommendations

Frequently Asked Questions About Dr. Chen

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

Dr. Chen has performed 90 Medicare-verified joint replacement procedures. This is in line with the California average of 65 procedures per surgeon. Dr. Chen ranks #132 out of 608 orthopedic surgeons in California.

What types of joint replacement does Dr. Chen perform?

Dr. Chen's Medicare data shows procedures in hip replacement (47 cases) and knee replacement (43 cases).

Are there other orthopedic surgeons near Dr. Chen in Berkeley?

Yes. There are 3 orthopedic surgeons in Berkeley 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. Chen 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. Chen's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 90 procedures shown here.

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

Dr. Chen's procedure volume has been relatively stable over 11 years of Medicare data, ranging from 57 to 110 procedures per year between 2013 and 2023. Consistent volume over multiple years reflects a steady joint replacement practice.

Does Dr. Chen perform more than one type of joint replacement?

Yes. Dr. Chen's Medicare data shows procedures in hip replacement (47 cases), knee replacement (43 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.

Which hospitals is Dr. Chen affiliated with?

According to CMS facility affiliation data, Dr. Chen is affiliated with Alta Bates Summit Medical Center - Alta Bates Camp, Alta Bates Summit Medical Center.

How does Dr. Chen compare to other orthopedic surgeons in Berkeley?

Among the 3 orthopedic surgeons in Berkeley, Dr. Chen ranks #1 by total Medicare procedure volume. Dr. Chen has the highest verified Medicare volume in the city.

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

Alta Bates Summit Medical Center - Alta Bates Camp (3 out of 5 CMS stars, hip/knee complication rate similar to national average); 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 Berkeley, California

Dr. Chen's 90 Medicare procedures are above the Berkeley average of 65. The table below compares verified procedure volumes for orthopedic surgeons practicing in Berkeley.

SurgeonProceduresSpecialties
Dr. Robert Eppley 56 Knee, Shoulder
Dr. Jerold Kaplan 50 Hip, 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. Christopher Chen, MD -- Orthopedic Surgeon Profile. Retrieved from https://orthoprocedures.com/surgeons/ca/dr-christopher-chen-berkeley.html

Link: https://orthoprocedures.com/surgeons/ca/dr-christopher-chen-berkeley.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.