Leadership

Thomas Bowden

Chief Executive Officer

Thomas Bowden was appointed Chief Executive Officer of Frisbie Memorial Hospital in Rochester, NH, in February 2025. Thomas came to HCA Healthcare from Steward Healthcare, where he most recently served as president of Rockledge Regional Medical Center in Florida.

He joined Steward Healthcare in 2014, and held numerous leadership roles at Rockledge Regional Medical Center prior to his appointment to CEO in January 2023, including chief administrative officer and chief operating officer. He also served as the regional director of operations for Steward Healthcare’s seven Boston-area hospitals.

Under his leadership, his previous hospital earned numerous quality awards, including a Leapfrog A rating and CMS 5 Stars. He also spearheaded diversity, equity and inclusion initiatives to address healthcare disparities in the community, and implemented retention and recruitment efforts which significantly reduced employee turnover, leading to better patient outcomes and experiences.

Bowden, a New England native, earned his bachelor of arts degree at Bates College in Lewiston, Maine, and his master’s degree in business administration at F.W. Olin Graduate School of Business at Babson College in Wellesley, Massachusetts.

Nancy Seskes

Chief Nursing Officer

Nancy Seskes was appointed chief nursing officer at Frisbie Memorial Hospital in June 2025 and has been with HCA Healthcare since 2022.

Nancy has a wealth of experience in nursing, including bedside care, education and leadership, with a strong background in critical care. She began her nursing career at St. Joseph's Hospital in Nashua, New Hampshire, and continued her career at hospitals in Massachusetts and New Hampshire, including Catholic Medical Center in Manchester.

Nancy holds a Bachelor's in Nursing from Rivier University and a Master's in Nursing and Nursing Education from the University of Phoenix. She enjoys community projects and has served as adjunct faculty at Rivier University.

Brian Sanders, MD, MHCM

Chief Medical Officer

Brian Sanders, MD, MHCM, is the Chief Medical Officer (CMO) for the Seacoast Market of HCA New England Healthcare, overseeing clinical performance and practice standards at Portsmouth Regional Hospital and Frisbie Memorial Hospital to ensure superior clinical outcomes and patient experience. He joined Portsmouth Regional Hospital in January 2023, and soon took over duties at Frisbie Memorial Hospital.

Prior to joining HCA Healthcare, Dr. Sanders most recently served as chief of the department of pediatric emergency medicine and chair of the department of pediatrics at Mass General Brigham’s Salem Hospital. He also served as the hospital’s site director for the Boston University Medical Student Program, as medical director for the COVID-19 employee testing clinic and vaccine program, and as site director for the REVISE (Reducing Variability in the Infant Sepsis Evaluation) Study for the American Academy of Pediatrics.

During his career, Dr. Sanders also served as medical director of pediatric emergency medicine at Lowell General Hospital where he helped to develop a pediatric emergency department. He also practiced as a pediatric emergency medicine physician at Children’s Hospital Boston; Children’s Specialty Group in Norfolk, Virginia; and Pediatric Emergency Medicine Associates in Atlanta, Georgia.

Dr. Sanders, a dual board-certified pediatrics and pediatric emergency medicine physician, holds a bachelor’s degree from the University of Virginia. He earned his medical degree from the Medical College of Georgia, and completed his residency and fellowship at Children’s Hospital of the King’s Daughters in Norfolk, Virginia. He also holds a Masters in Healthcare Management from Harvard University Chan School of Public Health.

Dr. Sanders has held academic appointments at Harvard Medical School, Tufts University School of Medicine, Medical College of Georgia, Eastern Virginia Medical School, and Boston University School of Medicine. His volunteer work includes international travel, treating patients and developing medical clinics in Zambia, India, Ecuador, and Jamaica.

Kira Riley

Vice President of Human Resources

Kira Riley joined HCA Healthcare in November 2021 and came to Frisbie Memorial Hospital from Portsmouth Regional Hospital, where she previously served as Senior Human Resources Business Partner since November 2021. She also concurrently served as Interim Vice President of Human Resources at Parkland Medical Center for several months.

During her time at Portsmouth Regional Hospital, Kira played a vital role in enhancing the patient experience and improving onboarding and retention, helping to reduce turnover in 2022. She has been instrumental in rebuilding relationships with directors and managers at both facilities.