Story of MEIRxRS

Celebrating more than 25 years in business!

Established in 1992 and headquartered in Glendale, California, the MEIRxRS family of companies continues to be the scientific technical resource partner of choice for the nation’s largest regulated industries and governmental organizations. Fortune 500 companies use MEIRxRS’ services for their labor and project needs supplying the sciences, technology, engineering, math, regulatory, compliance and quality occupations. If you seek high quality candidates for technical contractors, contract-to-hire, direct hire and payroll, MEIRxRS is the technical supplier partner to use.Our founder, Rosemarie Christopher, established Med Exec International (“MEI”) in 1992 for the purpose of recruiting and placing top performing professionals in the regulated industry fields of Clinical Research, Regulatory Affairs, Quality Assurance, and Medical Affairs.

Since that time, we’ve expanded our operations to be a full range supplier of contract and direct hire technical and scientific professionals to the life science industries.  As the economy and business needs of our clients changed, MEI progressed as well.

Remaining focused on delivering top workplace capabilities, MEI expanded in 2005 to include Rx Research Staffing Solutions (“RxRS”). The RxRS division was developed to assist organizations and study sponsors with maintaining tighter control of their late-stage trials, studies and projects, from personnel and budget, to the timely delivery of data for regulatory submission.

With a long standing history of successful team building and expertise in managing the multi-generational and culturally diverse workforce, the organization founded Rx Research Services CRO in 2011. This Contract Research Organization division provides dedicated functional matrix management solutions to keep your projects and programs running on-time and on-budget, in all phases. Our ability to organize, manage and supervise synergistic teams provides clients a timely dedicated resource to project operations.

In 2015, we launched a 501(c)3 non-profit to serve as our life sciences foundation. It aims to provide training and apprenticeships for life sciences industries.

As the MEIRxRS family of companies continues to advance, one thing remains unchanged MEIRxRS is your top resource for quality scientific and technical professionals when your need is NOW, your requirements are Specific and Critical and when there is No Margin for Error in the hiring process.

MEIRxRS is WBENC Certified

The MEIRxRS family of companies retains multiple Women’s Business Enterprise National Council (WBENC) certifications, supporting its operation as a woman-owned business.

With this certification, our corporate clients can be assured not only of the highest quality search services, but also that they can fulfill some of the mandated requirements of corporations who fill contracts for the government.

WBENC is the nation’s leading advocate of women-owned businesses as suppliers to America’s corporations. It also is the largest third-party certifier of businesses owned and operated by women in the United States. Dedicated to enhancing opportunities for women’s business enterprises, WBENC works in partnership with women’s business organizations located throughout the country to provide a national standard of certification for women-owned businesses.

about us


25+ year experience

Team of MEIRxRS




Rosemarie Christopher

Founder & CEO
Rosemarie Christopher is our CEO of the MEIRxRS family of companies. She has a strong understanding of employment, on the job training and retention of multigenerational workforce from over 25 years’ experience in recruiting and placing technical and scientific STEM (STEM: Science Technology Engineering Math) professionals. Rosemarie founded the first 9 life science apprenticeship programs in the state of California.