New leader to guide company’s strategic growth and expansion initiatives

SOUTH RIDING VA.–Slone Partners, a nationwide executive search firm for life sciences, biotechnology, and diagnostics companies, has announced the placement of Dan Monahan as President and Chief Executive Officer of NMS Labs. Mr. Monahan will build upon NMS Labs’ record of success, providing leadership in advancing the organization’s strategic growth and expansion initiatives.

Mr. Monahan has extensive experience in various leadership positions during the past nine years with Thermo Fisher Scientific. Most recently, he served as Vice President and General Manager within Unity Lab Services, where he led a $200 million global services business line with 1,100 employees. Prior to that, Mr. Monahan served as Vice President and General Manager of a $1.3 billion global distribution business. Earlier in his career, Mr. Monahan held positions in various functional areas including commercial operations, marketing, business development, finance, and product development.

Founded in 1970 under the direction of experts renowned throughout the medical, forensic, and legal fields, NMS Labs provides a unique and impressive menu of more than 2,500 tests—all readily available to clients ranging from hospitals and universities to law enforcement, attorneys, and medical examiners. The company is headquartered in Horsham, PA.

“Dan Monahan is an accomplished industry executive with extensive experience in commercial and business operations,” said Slone Partners CEO Leslie Loveless. “He brings extraordinary passion, energy, and devotion to his work, and is well suited to lead NMS Labs as the company continues growing in volume and importance in the market.”

“We are thrilled that Dan has chosen to join our firm as the next leader we have been searching for. Dan is a rising star and we know he will bring great energy, intelligence and new perspectives to our 50-year old business, leading it to new heights. We could not be more pleased,” stated Michael F. Rieders and Eric F. Rieders, owners of NMS Labs.

“It is a great honor and incredibly humbling to have the opportunity to lead a successful, purpose-driven organization,” said Mr. Monahan. “NMS Labs has tremendous expertise and is poised for growth in the industries we serve. When you couple that with our accomplished colleagues who have a passion for the work they perform, we will achieve true success together.”

Mr. Monahan earned an MBA with distinction from Harvard Business School, and a Master of Engineering and Bachelor of Science in Chemical Engineering from Illinois Institute of Technology.

Slone Partners delivers the leaders who build amazing scientific healthcare organizations – People Are Our Science®. Since 2000, Slone Partners specializes in delivering world-class C-suite leadership, executive, and upper management talent to the most promising and established life sciences, biotech, diagnostics, precision medicine, CRO, and laboratory services companies. With coast-to-coast presence in the most active healthcare industry hubs of Boston, San Francisco, New York, Los Angeles, San Diego, Austin, Research Triangle Park NC, and Washington DC, Slone Partners uniquely and precisely provides an array of executive search and advisory services to innovative scientific healthcare companies. To learn more about Slone Partners’ value proposition and processes, visit or call 888.784.3422.

NMS Labs is a leading bioanalytical toxicology and forensic sciences laboratory providing esoteric clinical and forensic services to physicians, attorneys, the criminal justice system, clinical reference labs, pharmaceutical companies, and consumer products manufacturers. As part of our services, NMS Labs’ professionals interpret our laboratory testing results to resolve client-specific issues and provide expert witness testimony and consulting support for both civil and criminal judicial proceedings. To learn more, visit