Thomas Tighe, DO
Chief of Staff, John Muir Medical Center, Walnut Creek

Thomas Tighe, DO, returns this year as chief of staff for Walnut Creek. Dr. Tighe has been 
on staff at John Muir Health since 1999. He received his medical degree from Des Moines University, and his internship and residency were completed at the University of California, San Francisco School of Medicine in Fresno. There, he also served as an Associate Clinical Professor of Emergency Medicine. Dr. Tighe’s areas of medical interest include international medicine and teaching airway methods.

Johannes Peters, MD
Vice Chief of Staff, John Muir Medical Center, Walnut Creek

Dr. Peters enters his second year as vice chief in 2013. He attended undergraduate and medical school in South Africa. After completing his internship and initial training in emergency medicine, he enrolled in an anesthesia training program in Oxford, England. This was followed by an internship and Anesthesia residency program at Harvard Medical School, Brigham and Women’s Hospital. Dr. Peters says, “I am humbled by this responsibility and continue to serve as a strong voice for our medical staff. I see our biggest challenge as functioning as a united medical staff in an increasingly competitive and changing medical environment.”

John (Tim) Ganey, MD
Chief of Staff, John Muir Medical Center, Concord

Dr. Ganey is affiliated with both medical centers, and was past president of the Alameda-Contra Costa Medical Association. Dr. Ganey received his 
B.S. from Boston College, and his MD from the Uniformed Services University of the Health Sciences in Bethesda. His internship was at the National Naval Medical Center in Bethesda, where he returned for a fellowship in Hematology and Medical Oncology following residency in Internal Medicine at Portsmouth Naval Hospital in Virginia. In 2013, he looks forward to successful Epic implementation, and the new peer review structure and process. He continues to support the ongoing focus on the programs of Just Culture and Pharmacy Optimization.

John Merson, MD
Vice Chief of Staff, John Muir Medical Center, Concord

We welcome Dr. Merson as vice chief this year. After receiving a degree from Stanford, he worked for a computer company, then returned to the campus to complete medical school prerequisites. He then attended medical school at UCLA with his wife, and both stayed for their residencies. Returning to the Bay Area, he worked with an orthopedic practice for three years before attending a sports medicine fellowship at the Hughston Clinic in Columbus,
 GA. Dr. Merson says, “My impetus for joining the leadership team was the idea that private practice should be represented in the medical staff hierarchy. The changes looming in health care are potentially monumental, and I felt the best preparation was through understanding what’s coming and being part of the process. The opportunity to work with the present slate of officers finalized the decision.”