Diagnostic Laboratory Services Executive and Leadership Team

June, 2026

Leadership Overview

Diagnostic Laboratory Services has 4 executives leading key functions including strategy, operations, information systems, and market development.

Driven by a commitment to accurate diagnostics, Diagnostic Laboratory Services focuses on delivering essential testing services that support public health and individual well-being across its operational regions.

Leadership Roles at Diagnostic Laboratory Services

  • Chief Executive Officer - Wei Fai
  • President & Chief Executive Officer - Richard Okazaki
  • President - Mark Wasielewski
  • Vice President, Information Systems & Chief Information Officer - Jon Sumida
  • Wei Fai - Chief Executive Officer

    Wei Fai, the Chief Executive Officer at Diagnostic Laboratory Services, directs the overarching corporate strategy and operational execution. This leadership role involves guiding the company's expansion into new testing methodologies and ensuring compliance with evolving healthcare regulations. Wei Fai oversees the integration of advanced diagnostic technologies to enhance service offerings in drug testing, toxicology, and chemical substance abuse panels. The Chief Executive Officer's focus extends to fostering strategic partnerships that broaden the company's market reach and impact within the health services sector. By championing innovation, Wei Fai ensures Diagnostic Laboratory Services maintains its position as a leader in providing critical laboratory insights.

    Richard Okazaki - President & Chief Executive Officer

    Richard Okazaki, the President & Chief Executive Officer at Diagnostic Laboratory Services, drives the company's strategic vision and operational excellence. This executive guides all facets of the business, from financial performance to market positioning, ensuring alignment with the company's mission of providing comprehensive diagnostic services. Richard Okazaki oversees the expansion of toxicology reports, drug screening, and chemical substance abuse panels, leveraging deep industry knowledge to enhance service delivery. The President & Chief Executive Officer's responsibilities include fostering a culture of scientific integrity and operational efficiency across all laboratory functions, including microbiology and pathology. By directing key initiatives, Richard Okazaki ensures Diagnostic Laboratory Services consistently meets the rigorous demands of healthcare providers and regulatory bodies, solidifying its reputation for reliability and precision.
    Richard Okazaki

    Mark Wasielewski - President

    Mark Wasielewski, the President at Diagnostic Laboratory Services, spearheads the company's operational management and market presence. This executive role focuses on optimizing the delivery of critical services, including drug testing, toxicology reports, and chemical substance abuse panels, across the company's service areas. Mark Wasielewski oversees the integration of new diagnostic technologies and ensures the efficient functioning of microbiology and pathology departments. The President's responsibilities extend to fostering strong relationships with healthcare providers and stakeholders, driving business development initiatives that expand the company's reach. By ensuring operational excellence, Mark Wasielewski supports Diagnostic Laboratory Services' commitment to providing accurate and timely laboratory results, reinforcing its standing in the health services sector.

    Jon Sumida - Vice President, Information Systems & Chief Information Officer

    Jon Sumida, the Vice President, Information Systems & Chief Information Officer at Diagnostic Laboratory Services, architects the company's technological infrastructure and digital strategy. This leadership position involves overseeing the development and implementation of secure, efficient information systems that support all laboratory operations, including drug testing, toxicology, and microbiology. Jon Sumida drives the integration of advanced data management solutions to ensure the integrity and accessibility of test results, pathology reports, and chemical substance abuse panel data. The Chief Information Officer's mandate includes enhancing cybersecurity measures and optimizing IT resources to support business growth and regulatory compliance. By leading technological innovation, Jon Sumida ensures Diagnostic Laboratory Services maintains a competitive edge through robust and reliable information systems.
    Jon Sumida

    Explore Leadership Teams in Healthcare Services

    Frequently Asked Questions Regarding Diagnostic Laboratory Services Top Executives and Leadership Team

    Who leads Diagnostic Laboratory Services?
    Diagnostic Laboratory Services is led by Wei Fai (Chief Executive Officer), along with executives such as Richard Okazaki (President & Chief Executive Officer) and Mark Wasielewski (President).
    Who is part of Diagnostic Laboratory Services’s executive team?
    The executive team of Diagnostic Laboratory Services includes leaders such as Wei Fai (Chief Executive Officer), Richard Okazaki (President & Chief Executive Officer), Mark Wasielewski (President) and other senior executives.
    How many executives does Diagnostic Laboratory Services have?
    Diagnostic Laboratory Services has 4 executives leading key business areas.
    What roles are included in Diagnostic Laboratory Services’s leadership team?
    The leadership team of Diagnostic Laboratory Services includes roles such as Chief Executive Officer, President & Chief Executive Officer, President, Vice President, Information Systems & Chief Information Officer.