Diagnostic Laboratory Services Executive and Leadership Team

May, 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 Hawaii.

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 company's overall strategic vision and operational execution. Fai oversees all departments, ensuring alignment with the company's mission to provide comprehensive diagnostic testing. This leadership role involves guiding the organization through market changes and fostering innovation in laboratory services. Wei Fai's focus remains on enhancing service delivery and expanding the company's reach within the health services sector. The Chief Executive Officer ensures robust financial performance and sustainable growth, maintaining Diagnostic Laboratory Services' position as a leading provider of diagnostic solutions.

    Richard Okazaki - President & Chief Executive Officer

    Richard Okazaki, the President & Chief Executive Officer at Diagnostic Laboratory Services, drives the company's strategic direction and operational excellence. Okazaki manages all facets of the business, from laboratory operations to client relations, ensuring the delivery of high-quality diagnostic services. This executive position involves cultivating key partnerships and expanding the company's service offerings in toxicology, microbiology, and pathology. Richard Okazaki's leadership ensures that Diagnostic Laboratory Services maintains its commitment to accuracy and efficiency in all testing procedures. The President & Chief Executive Officer champions initiatives that enhance patient care and support healthcare providers across Hawaii.
    Richard Okazaki

    Mark Wasielewski - President

    Mark Wasielewski, the President at Diagnostic Laboratory Services, spearheads the company's operational strategies and market presence. Wasielewski directs day-to-day activities, focusing on optimizing laboratory efficiency and expanding service lines, including microbiology and pathology. This leadership position involves fostering a culture of excellence and ensuring compliance with industry standards for drug screening and toxicology. Mark Wasielewski's influence extends to enhancing client satisfaction and strengthening relationships with healthcare partners. The President drives initiatives that support the company's mission of delivering accurate and timely diagnostic results, solidifying Diagnostic Laboratory Services' reputation in the health 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 and manages the company's technological infrastructure. Sumida oversees all aspects of information systems, ensuring data integrity, security, and efficient workflow for laboratory operations. This critical role involves implementing advanced IT solutions to support drug testing, toxicology reports, and chemical substance abuse panels. Jon Sumida's expertise drives the digital transformation of laboratory processes, enhancing diagnostic capabilities and client accessibility. The Vice President, Information Systems & Chief Information Officer ensures seamless integration of new technologies, supporting the company's growth and commitment to providing reliable health services.
    Jon Sumida

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    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.