Senior Leaders

Gary Shaw, FACHE
President & CEO

Gary Shaw, FACHE, is President and Chief Executive Officer at Nantucket Cottage Hospital. Gary brings more than two decades of experience leading hospitals and healthcare organizations from Delaware to Alaska, as well as 20 years of service in the U.S. Navy’s Medical Service Corps, where he rose to the rank of Lieutenant Commander.

Gary previously served as President of Cambridge Medical Center in Minnesota, an 86-bed facility that is part of the Allina Health not-for-profit healthcare system. At Cambridge Medical Center, he was responsible for a number of system-wide improvement initiatives in quality and patient care and led the development of a new $9 million outpatient clinic. Prior to that, Gary was the hospital administrator of the Alaska Native Medical Center in Anchorage, Alaska, a 158-bed regional referral center and teaching hospital for the Alaska Native and American Indian populations.

Gary enlisted in the U.S. Navy in 1977, progressing from Hospital Corpsman to Lieutenant Commander of the Navy’s Medical Service Corps over the span of two decades. He served during four wars and his last overseas assignment was as a Navy Environmental health advisor (Public Health) to the United Nations during the Bosnian war.

A graduate of Southern Illinois University, Gary received a Bachelor of Science degree in Healthcare/Business Administration, followed by a Master of Science degree in Operations Management from the University of Arkansas – Fayetteville. He holds an Executive Professional Coaching Certificate from the University of St. Thomas in Minneapolis, MN, and is a Fellow of the American College of Healthcare Executives.

Gary and his wife Trisha have two grown children.

Aaron Fishman, MBA
Vice President, Finance

Aaron Fishman is Vice President of Finance at Nantucket Cottage Hospital. He is a graduate of Boston College, with a Bachelor’s degree in Biology and a Master’s degree in Business Administration.

Aaron served as Budget Director for nine months prior to formally transitioning into NCH’s VP of Finance role. He spent three years as Manager of Finance and Business Analytics in the Massachusetts General Hospital Finance Office, where he was responsible for financial analytics, business planning, and the annual capital budget. Previously, Aaron completed the Administrative Fellowship Program at Mass General, a two-year program designed to provide aspiring health care professionals with essential hospital management and administration training.

Aaron is from Wellesley, MA and currently lives in Beacon Hill with his wife, Kathryn.

Christopher A. Glowacki
Vice President, Strategy & Community Development

Christopher is the Vice President of Strategy at Nantucket Cottage Hospital. Previously, as Managing Director of Strategy and Development, Chris was responsible for the major gifts program for the $120 million capital campaign to build the island’s new hospital. Chris holds his master’s degree in business administration from the University of Michigan and his bachelor’s degree from Amherst College. He is a graduate of Nantucket High School and a third-generation Nantucketer.

Chris returned to Nantucket after serving as a business development executive with NBC and Discovery Communications, and as a Chief Strategist at CNBC and in New York City. Following his tenure at NBC, Chris was the co-founder and CEO of Plum TV, the lifestyle television network that operated on Nantucket and other resort destination communities.

Cristina Hickey-Toedtmann, MBA, SPHR
Vice President, Human Resources

Cristina Hickey-Toedtmann, MBA, SPHR is Vice President of Human Resources at Nantucket Cottage Hospital. With over 25 years of experience as a seasoned HR leader, Cristina brings a blend of nonprofit and for-profit experience to NCH by effectively balancing big-picture-thinking and strategic planning with hands-on execution.

Cristina earned her bachelor’s degree in business management from Friend’s University, and a master’s degree in business administration from Newman University. She is a Certified Senior Professional in Human Resources. Her diversified industry background includes several years in health care, information technology, real estate and manufacturing, as well as oil and gas.

Cristina is an active member of the Society of Human Resources Management and has served as an Adjunct Human Resources Professor.

Barbara A. Hannon-Vishio, DNP, MEd, RN, CENP
Interim Chief Nursing Officer

Dennis Patnaude
Vice President, Facilities

Nancy S. Pittman, JD
Vice President, Compliance, Contracting & Risk Management

Nancy S. Pittman is Vice President of Compliance, Contracting and Risk Management at Nantucket Cottage Hospital. She earned her bachelor’s degree in political science from the University of Illinois and completed her Juris Doctor degree at the Washington University School of Law in St. Louis, Missouri.

Nancy started her career as a Judicial Law Clerk for the Illinois Appellate Court, Fourth District, and later served as Assistant Counsel to the Illinois Secretary of State where she was the legal advisor to the Department of Driver Services. Nancy served the State of Illinois for 13 years as the Chief Labor Counsel and Manager of the Office of Labor Relations for the Department of Central Management Services. Prior to joining NCH in 2015, Nancy was Assistant to the Chairman of the United States Railroad Retirement Board, providing legal advice and confidential assistance to the Chairman on issues affecting the Board and its constituents.

Nancy and her husband, Bill, have been married for 26 years and have two children.


Meet your Nantucket Cottage Hospital clinicians
across more than 30 different subspecialties: