About Us
Who We Are
Lighthouse Lab Services is the industry’s leading laboratory services platform, helping organizations build, operate, optimize, and grow high-performing laboratories.
Whether an organization is launching a new laboratory, navigating regulatory complexity, strengthening an existing operation, or preparing for its next stage of growth, Lighthouse brings together the specialized expertise, talent, and resources needed to move forward with confidence.
Our Team
Our team is made up of 150+ professionals ready to help you navigate every aspect of the clinical laboratory industry. Our teams work alongside clients to solve complex challenges, improve operational performance, and advance high-quality patient outcomes.
Giving Back
At Lighthouse Lab Services, philanthropy is built into our brand. As a “Give Back” Company, we have pledged to donate a portion of our profit annually. We also donate a portion of employee time by volunteering in our local community.
The Industry’s Leading Laboratory Services Platform
2,000+
Laboratory Clients
200+
Laboratories Managed
300+
Laboratories Built
150+
Lighthouse’s Industry Experts
Meet Our Executive Leadership Team
Jason Severtson
CEO, Lighthouse Lab Services
Jason serves as Chief Executive Officer of Lighthouse Lab Services, the leading laboratory services platform helping diagnostic organizations launch, operate, and scale high-performing laboratories. He leads the company’s strategy, operations, and growth while advancing its mission of making quality laboratory testing more accessible.
A seasoned healthcare and life sciences executive, Jason brings three decades of leadership experience, including significant experience across the laboratory, diagnostics, pharmaceutical services, and healthcare sectors. He has held executive leadership positions with Thermo Fisher Scientific, Labcorp, Quest Diagnostics, Mayo Clinic, and GE Healthcare, where he led businesses spanning commercial operations, laboratory services, digital solutions, business development, and enterprise transformation
Known for his collaborative leadership style and ability to build high-performing organizations, Jason has spent his career helping healthcare and life sciences companies accelerate growth, improve operational performance, and create exceptional customer experiences. His expertise includes strategic planning, mergers and acquisitions, organizational design, commercial excellence, digital transformation, and scaling complex service-based businesses.
A lifelong learner, Jason earned his business degree from the University of Massachusetts Amherst and later pursued doctoral studies in public health. His professional and academic experiences have shaped a leadership philosophy centered on continuous improvement, empowering people to achieve their full potential, and the belief that expanding access to quality diagnostics can improve healthcare outcomes for patients and communities alike.
Jon Harol
Founder, Lighthouse Lab Services
Since founding Lighthouse Lab Services in 2003, Jon Harol has dedicated more than two decades to the mission of making quality laboratory testing more accessible to patients and healthcare providers nationwide. Under his leadership, Lighthouse has grown from a specialized laboratory recruitment firm into a leading provider of end-to-end laboratory consulting, staffing, and compliance services.
Headquartered in Charlotte, NC, Lighthouse Lab Services actively supports hundreds of laboratories across the country with services spanning new CLIA lab start-ups, Laboratory Developed Test (LDT) validation, RCM consulting, recruiting, and instrument service.
Jon started Lighthouse in response to the growing laboratory staffing shortage, a challenge that continues to shape the industry today. His forward-thinking approach has since led the company to expand its impact through innovative programs and services that help physicians and independent labs bring new tests to market faster.
A vocal advocate for the laboratory profession, Jon is committed to ensuring clinical labs receive the recognition they deserve as the data-driven backbone of modern healthcare.
Ellen Beausang
President & Chief Revenue Officer, Lighthouse Lab Services
As President and Chief Revenue Officer of Lighthouse Lab Services, Ellen leads the company’s nationwide growth strategy, overseeing sales, marketing, client success, and service delivery. Her focus is on ensuring Lighthouse continues to empower laboratories with the expertise they need to thrive in an increasingly complex healthcare environment.
Prior to joining Lighthouse, Ellen served as Chief Commercial Officer and Senior Vice President at BioReference Health (NASDAQ: OPK), where she led commercial strategy across a diverse portfolio spanning women’s health, oncology, and national reference testing services. Additionally, she previously held senior leadership positions at both Quest Diagnostics and ThermoFisher.
Ellen currently serves on the Board of Directors for Aspira Women’s Health, where she continues to champion diagnostic innovation that meaningfully impacts patient outcomes.
Driven by a passion for customer-centric innovation, Ellen brings a deep understanding of commercial strategy, organizational transformation, and laboratory market dynamics. At Lighthouse, she is dedicated to helping laboratories achieve long-term success, while also elevating the visibility and value of diagnostic testing as a critical foundation of modern healthcare.
Bob Mallers
Chief Financial Officer, Lighthouse Lab Services
Bob is a seasoned financial executive with over three decades of experience guiding Fortune 100 clients, private equity–backed firms, and global organizations through transformational growth. As Chief Financial Officer for ComPsych, Addison Group, Energy BBDO, and Foote, Cone & Belding, he has consistently delivered results in revenue generation, capital structuring, acquisitions, and operational efficiency.
Bob has successfully executed multi-million-dollar recapitalizations, led high-value acquisitions, and built finance infrastructures from the ground up, driving profitability and reducing leverage across diverse industries, including professional services, advertising, technology, and consulting. His expertise spans SEC and GAAP reporting, treasury management, strategic planning, and global operations.
A Certified Public Accountant and Certified Treasury Professional, Bob holds a B.S. in Accounting from Millikin University. Known for his transformational mindset and ability to build high-performing teams, he continues to influence financial strategy and operational excellence across industries.
Sarah Harris
Chief Technical Officer & Interim COO, Lighthouse Lab Services
As Chief Technical Officer for Lighthouse Lab Services, Dr. Sarah Harris oversees the company’s scientific and technical operations, ensuring the highest standards of quality, compliance, and innovation across the laboratories Lighthouse supports nationwide. Drawing on her extensive background in toxicology, infectious disease, and clinical testing methodologies, Dr. Harris provides expert guidance on everything from instrumentation and validation to regulatory strategy and process optimization.
Before joining Lighthouse, Dr. Harris managed daily operations for a major national reference laboratory, where she led a team processing more than 50,000 samples each month. At Lighthouse, she directs technical strategy and consulting initiatives that help laboratories enhance efficiency, strengthen compliance, and advance patient care.
A passionate advocate for laboratory excellence, Dr. Harris works to elevate the visibility and value of clinical science within the broader healthcare system. She holds a B.S. in Chemistry from St. Norbert College, an M.S. in Chemistry from the University of Notre Dame, and a Ph.D. in Public Health from the University of South Carolina.
Mark Roth
Founder & Board Advisor, Lighthouse Lab Services
Mark Roth served as Chief Executive Officer of Lighthouse Lab Services for over 7 years, guiding the company’s strategic vision and commitment to supporting clinical laboratories nationwide. With more than two decades of experience in laboratory testing and management, Mark brings deep expertise in both the patient care and business considerations of the industry.
Recently, Mark has stepped away from day-to-day leadership as CEO of Lighthouse. He remains involved as a member of the Board and will continue supporting the company.
Before joining Lighthouse, Mark served as President and COO of PCLS, where he oversaw operations for one of the nation’s leading toxicology laboratories. He then founded Elite Diagnostics, a laboratory consulting firm focused on helping toxicology labs improve efficiency, compliance, and profitability — before merging with Lighthouse in 2019 to unite two complementary leaders in laboratory management and recruiting.
Mark frequently engages with industry partners and stakeholders to promote fair reimbursement, operational excellence, and innovation within the lab space. Mark holds an MBA from the Wharton School of Business at the University of Pennsylvania and a B.S. in Biology from the University of North Carolina at Chapel Hill.
As a “Give Back” Company, we have pledged to donate a portion of our profit annually to a local non-profit. We have partnered with Water For Good®, a non-profit that is devoted to ending water poverty in the Central African Republic (CAR), one of the most neglected and unstable countries in the world.
Lighthouse Acquires MJB Lab Consulting, Expanding Medical Leadership Services