PLUS Diagnostics

Water Street invested in PLUS Diagnostics in 2006 when it was a regional laboratory specializing in urology. We recruited an industry-leading executive team and board led by Tim Brodnik, the former president and CEO of American Medical Laboratories. Together, we tranformed PLUS into a national anatomic pathology leader offering a comprehensive menu of diagnostic services.  Water Street invested our team’s industry experience and network or resources to support PLUS with opening bi-coastal laboratories, introducing innovative new tests and recruiting an experienced team of nationally recognized pathologists.  In seven years, PLUS tripled its laboratory capacity and expanded its capabilities into dermatopathology, hematopathology, and gastrointestinal and genitourinary pathology.  Miraca Life Sciences acquired PLUS in 2013 to become the largest independent pathology company in the United States.


David Pauluzzi

Chief Executive Officer

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A long-time executive in the laboratory products and services industry, David Pauluzzi has more than 20 years of finance, marketing, operations and sales experience. Water Street recruited David as president and chief operating offer to expand Plus Diagnostics’ operations. The board promoted him to chief executive officer following three consecutive years of growth. Previously, David was a senior executive at Quest Diagnostics, where he played an instrumental role in the company’s growth. He directed operations, marketing and sales for its anatomic pathology and hospital businesses. David also spent 10 years in executive positions at industry-leading companies, US LABS and Ventana Medical Systems. He began his career with Abbott’s Diagnostics division. David received a bachelor’s degree in business administration and accounting from Loyola University of Chicago.