Walter J. Ramos, JD 

Walter J. Ramos, JD joined Rogerson as President and CEO in July, 2018. Walter, an accomplished and respected healthcare administrator, has more than 20 years of leadership experience in non-profit healthcare and municipal agencies. He was most recently President of Carney Hospital, where he was responsible for setting the vision and ensuring effective leadership and management.

Ken Crisafulli 

Ken Crisafulli joined Rogerson Communities in 2001 as Building Services Director. He has served in the role of Vice President of Real Estate Construction & Design since 2015. Ken’s responsibilities include oversight of all construction through completion including the structural planning and permitting, to the management and oversight of a team of architects, designers, and production managers, and ensuring projects are on budget and within timeline scope. Ken works directly with non-profit clients and with the President/CEO to manage specific real estate or new program development assignments and/or to offer consultation on potential new development opportunities.

Natalya Leshchiner 

Natalya Leshchiner joined Rogerson in 2020, bringing over 20 years of success in finance and operations management. As the Chief Financial Officer, she leads the finance and accounting teams, overseeing all financial activities, budget preparation, and audit functions. With extensive experience in healthcare, property management, and development, Natalya is known for her strategic thinking, effective team building, and ability to drive financial and operational success. Prior to Rogerson, she served as Director of Financial Operations at Carney Hospital and as CFO/Vice President of Finance at Morton Hospital. Additionally, she oversees Rogerson’s Adult Day Health Programs.

David J. Pia 

David J. Pia is the Chief Administrative Officer for Rogerson Communities. David has primary responsibility for overseeing organizational management and strategy, human resources, workforce development and corporate regulatory compliance. David joined Rogerson in 2022 as the Vice President of Human Resources. Prior to joining Rogerson, David worked as the Director of Human Resources for the Boston Planning and Development Agency and spent nineteen years as the Director of Human Resources for the Boston Public Health Commission.

Bob P. Sherburne

Bob P. Sherburne is the Vice President of Advancement for Rogerson Communities. Bob is responsible for all aspects of fundraising, marketing, communications, and community building with outside constituents. Bob joined Rogerson in 2024 bringing with him twenty years of experience working with a variety of non-profits. He was most recently a Senior Director on Boston University’s Major Gifts Team. Prior to that, Bob was the inaugural Assistant Dean for Development & Alumni Relations at the Pardee School of Global Studies and the Director of Development at the Fletcher School of Law & Diplomacy.

Laurie N. Trilling 

Laurie N. Trilling came to Rogerson Communities in 1998 and has served in several roles during her tenure at Rogerson, across both Senior Living and Affordable Housing. Laurie currently holds the position of Senior Vice President for Affordable Housing. In this role, Laurie leads a team in providing managerial oversight, support, compliance control, and fiscal/budgetary management for a portfolio of affordable and subsidized housing properties. This portfolio includes both Rogerson owned-sites, and fee-managed sites for other clients.

Peter van Kalkeren 

Peter van Kalkeren is Chief Operating Officer of Rogerson Communities. In this role, he leads, directs and supports Rogerson’s senior living portfolio. This portfolio includes both Rogerson owned-sites, and fee-managed sites for other clients. Peter also oversees Information Technology services and Rogerson’s digital transformation. He is responsible for advancing organizational strategic initiatives as they relate to senior living and technology. Peter joined Rogerson in 2018 as Chief Administrative Officer. Prior to joining Rogerson, Peter was Vice President of Operations at Steward Carney Hospital and served as Chief Business Development Officer at DotHouse Health.