Brian J. Blaser is the Chief Executive Officer and President of QuidelOrtho. Brian has held the CEO seat since May 2024, and was previously Executive Vice President, Diagnostics Products at Abbott.
Current company
QuidelOrtho
QuidelOrtho is an American healthcare company.
health care industryHeadquartered in San DiegoFounded 1979Nasdaq: QDEL
Source: WikidataBrian J. Blaser has been CEO of QuidelOrtho since May 2024. Before QuidelOrtho, Brian was Executive Vice President, Diagnostics Products at Abbott from May 2012 until June 2019.
Career
Sources: LinkedIn profile
Education
University of Dayton, Bachelor of Science - BS, Mechanical Engineering TechnologyRochester Institute of Technology - Saunders College of Business, Master of Business Administration - MBA, FinanceSource
60+ decision makers at QuidelOrtho in Unify, vice president level and above. Choose a function to see who leads it.
Top decision makers at QuidelOrtho
Vice president level and above, most senior firstBrian J. Blaser leads a leadership team of 6 published executives. The most recent appointment is Nathaniel B. Sisitsky as Chief Legal Officer and Corporate Secretary, in seat since March 2026.
Most senior 5 of 6
| Name | Title | In seat since |
|---|---|---|
| Brian J. Blaser | President and CEO | May 2024 |
| Nathaniel B. Sisitsky | Chief Legal Officer and Corporate Secretary | March 2026 |
| Philip D. McLellan | Chief Operations Officer | November 2024 |
| Jonathan P. Siegrist | EVP of R&D and Chief Technology Officer | October 2024 |
| Lee Bowman | Chief Human Resources Officer | August 2024 |
Sources: QuidelOrtho 2026 DEF 14A
Brian J. Blaser is the Chief Executive Officer and President of QuidelOrtho. Brian has held the CEO seat since May 2024, and was previously Executive Vice President, Diagnostics Products at Abbott.
Brian J. Blaser has been CEO of QuidelOrtho since May 2024, according to LinkedIn profile.
Brian J. Blaser was Executive Vice President, Diagnostics Products at Abbott from May 2012 until June 2019, according to LinkedIn profile.
Brian J. Blaser has been CEO of QuidelOrtho for 2 years, since May 2024.
Nathaniel B. Sisitsky (Chief Legal Officer and Corporate Secretary), Philip D. McLellan (Chief Operations Officer), Jonathan P. Siegrist (EVP of R&D and Chief Technology Officer), Lee Bowman (Chief Human Resources Officer), and 1 more. Source: QuidelOrtho 2026 DEF 14A.
The seat holder is identified in Unify's professional profile dataset, then confirmed against the company's published leadership page, its SEC filings, and Wikipedia before publication. Career and education rows carry the public document they were taken from. Leadership team membership follows the company's own leadership page; in-seat dates come from filings where available and otherwise from the profile record. Company figures are read from the Unify headcount page for the same company and are profile coverage measures, never company-reported workforce totals. The employee preview lists vice president and senior vice president level profiles by department. No personal contact details are published.
