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Leadership

Our Leadership: Guiding Shields with Vision, Integrity, and Innovation


Shields Health is led by an experienced executive team dedicated to advancing our mission, inspiring innovation, and partnering with our board-certified radiologists. Together, they ensure Shields delivers trusted, patient-centered care with the compassion of a family-owned organization.

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Thomas A. Shields

Chief Executive Officer

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Peter Ferarri

President

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Stephen Sweriduk, M.D.

Medical Director

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John Antaya

Chief Marketing Officer

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Prashanth Bala

Chief of Ambulatory Surgical Services

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Tisha Delmore

Chief Financial Officer

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Gerald Greeley

Chief Information Officer

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Tanya Hahn

Chief Talent Officer

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Lou Masella

Vice President PET/CT and Radiation Oncology

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Christine Mavillia

Chief Transformation, Compliance, and Risk Management Officer

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Dianne Tripp

Vice President of Imaging Operations

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Careers at Shields

Be part of a mission-driven team bringing innovation and compassion to every patient.

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PARTNER WITH Shields

Collaborate with Shields to deliver advanced imaging, surgery, and diagnostic care across New England.

Connect with Us

Interested in joining Shields or exploring a partnership opportunity? Our team is here to answer questions, discuss collaborations, and provide the information you need to take the next step with us.