Leadership Team

Guy Fish, MD, MBA

President and
Chief Executive Officer

Guy Fish, MD, MBA, has extensive health care experience as a physician and a consultant in numerous executive leadership roles which encompass both the for-profit and nonprofit health care sectors. Before joining GLFHC in July 2021, Fish was acting CEO of Nextstage Therapeutics, a Spanish company with exosome technologies. Prior to that, he was CEO of Cellanyx Diagnostics, which uses artificial intelligence to predict which cancers are aggressive and which are not. Before Cellanyx, Fish was a leader with profit and loss responsibilities for 17 years at the health care strategy consulting firm Fletcher Spaght, Inc. His market assessments, due diligence in acquisitions, fundraising, and strategic growth planning for a wide range of medical services and products resulted in substantial value creation over the last ten years. In the nonprofit sector, Fish is Chairman of the Board of Trustees at health care think-tank Altarum Institute which is focused on improving the health of marginalized communities. As treasurer of the Harvard Alumni Association, he spearheaded initiatives to advance social justice and anti-racism. Fish is also a Lay Trustee of the Beth Israel Deaconess Medical Center and has chaired both the Patient Care Committee and the Medical Education Committee. 

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Ramona Ceballos


Javier Vargas


Nick Rosenberg


Joanna Kroon


Bob Ingala


Socrates De La Cruz


Frances Sidley


Julieann Thurlow


Abel Vargas

Vice Chair

Timothy DiBona


Charlie Zanazzi


Robert J. Gold


Joanne Grega


Ivy Polanco


Rosa Pina


David Abdoo

Commonwealth of Massachusetts

Jessica Molignano

Merrimack College

Helena Silva

Primerica Advisors

James Moriarty, Chair

Enterprise Bank

Susan Theriault, Vice Chair

Guardian Ambulance

Daniel Bryant


Blaise Coco

Coco, Early & Associates

Timothy Coco


Noemi Custodia-Lora

Northern Essex Community College

Linda P. Early

Coco, Early & Associates

Lane Glenn

Northern Essex Community College

Zoila Gomez

Law Offices of Zoila Gomez

Therese Leone

Enterprise Bank

Scott Martin

Martins Flowers

Vilma Martinez-Dominguez

Mayor's Health Task Force

Derek Mitchell

Lawrence Partnership

Wil Molina

Coco, Early & Associates

Michael Morris

Morris, Rossi, and Hayes

Denise Olivares

Coco, Early & Associates

Peter F. Quinlan

Fred C. Church Insurance

Glenn Prezzano

512 Media, Inc.

Olivia Rosa

City of Lawrence

Joseph M. Russo

Hub International

Michael Santana

Coco, Early & Associates

Michael Sullivan

TA Sullivan Insurance

Salim Tabit

Essex County Superior Court

John Toomajanian

Guardian Ambulance

David Torrisi

Torrisi Advisors

Susan Tucker

Former Massachusetts State Senator

Edward Warnshuis

Lawrence Public Schools

Charles F. Zanazzi

HarborOne Bank