Semon R. Bader, M.D.

semon-bader-md | Muir Orthopedics | Concord & Walnut Creek

Dr. Semon Bader

Orthopedic Surgeon & Sports Medicine Specialist

MOS Locations:
Walnut Creek (Redwood Building)


Dr. Bader is board certified in orthopedic surgery. He specializes in sports medicine, general orthopedics and joint preservation.

Approach to Treatment

I enjoy building relationships with my patients and helping them regain function and maintain their quality of life.  I am dedicated to helping each individual understand his or her condition and treatment options, both surgical and non-surgical. I strive to help my patients achieve their desired level of function and pain relief whether they are elite athletes, weekend warriors or older adults.

About Dr. Bader

Dr. Bader grew up in the Bay Area and attended the University of California, Davis, where he majored in neurobiology, physiology and behavior and graduated with the highest honors. Dr. Bader went on to complete medical school at the University of California, Davis, and completed his Orthopedic Residency at Harbor-UCLA Medical Center in Los Angeles.

Dr. Bader then completed a one-year fellowship in Sports Medicine, Knee, Shoulder and Hip Arthroscopy at the world-renowned Cleveland Clinic Foundation. While at the Cleveland Clinic, he gained extensive experience as a team physician for local high schools, club teams and Cleveland State University. He was also a member of the medical team for the Cleveland Indians, Cleveland Cavaliers, Cleveland Browns and the NFL Combine, gaining experience in the management and care of athletes at all levels.

After his fellowship, Dr. Bader returned with his wife and three children to settle in the East Bay area. For the past five years, he has served as Chief of Orthopedic Surgery at Contra Costa Regional Medical Center in Martinez. He has published numerous peer-reviewed articles and book chapters focused on joint preservation. He has presented at regional and national conferences on the treatment of knee disorders and ACL reconstruction. Dr. Bader brings an added skill in the management of hip disorders in young adults.

In his spare time Dr. Bader enjoys golfing, hiking, biking and spending time with his family.


• Diplomate of the American Board of Orthopaedic Surgery
• Member of the American Academy of Orthopaedic Surgeons
• Member of the Arthroscopy Association of North America
• Member of the American Orthopaedic Society for Sports Medicine
• Head team physician for Diablo Valley College in Concord
• Head team physician for Los Medanos College in Pittsburgh
• Team Physician for Alhambra High School

In the News

Curriculum Vitae

Muir Orthopaedic Specialists

1800 Sutter Street
Suite 100
Concord, CA 94520
2625 Shadelands Drive
Walnut Creek, CA 94598
350 John Muir Parkway #100
Brentwood, CA 94513


Sports Medicine Fellowship, Cleveland Clinic Education Foundation

Orthopedic surgery resident, Harbor/UCLA Medical Center

Surgery internship, University of California, San Francisco

Medical degree, University of California, Davis

B.S., neurobiology, physiology & behavior, University of California, Davis


Sports Medicine Fellowship at Cleveland Clinic (2010 to 2011)

Outstanding contribution towards teaching and training the next generation of family medicine physicians at John Muir Family Medicine Residency Program (2017 to 2018)


Meniscectomy, AAOS Atlas of Essential Orthopaedic Procedures, 2011. Semon Bader MD, Paul Saluan MD, Richard Parker MD.

Assessment of High Dose Gamma Irradiated Allografts in Anterior Cruciate Ligament Reconstruction. Presented: AANA Fort Lauderdale, FL, May 2010. Semon Bader MD, Ivan Garcia MD, Ronald Navarro MD Chief, Kaiser Permanente South Bay.

Mosaicplasty, in Orthopedics, 2011 Sep 9:34. Semon Bader MD, Anthony Miniaci.

Guidelines for DVT Prophylaxis after Arthroscopy at the Cleveland Clinic Foundation. Semon Bader MD, Jack Andrish MD.

Resolution of Foot Pain after Removal of Hardware Bilateral Subtalar Arthroereisis, in Journal of Pediatric Orthopaedics, 2012. Sal Hazani MD, Semon Bader MD, Norman Otsuka, MD.

Contribution of GIRK2-mediated postsynaptic signaling to opiate and analgesic sex differences. Proceedings of the National Academy of Science, January 7, 2003, vol. 100 no.1 271. Igor Mitrovic, Marta Margeta-Mitrovic , Semon Bader, Markus Stoffel , Lily Y. Jan*, and Allan I. Basbaum.