Our Management

Our management team has collectively seen the healthcare industry from all sides. Their commitment to customer service and relationships makes up the backbone of what we do at Alliance Diagnostics.

Joe Zimmerman + Read Bio

Joe Zimmerman founded Alliance Health Sciences in 2011. With over 20 years of healthcare experience, including the last 11 as a senior executive in pathology-focused business, Joe's experience includes operations, payer contracting, billing, sales, marketing and product development. Prior to founding Alliance, Joe served as Vice President of Operations at Sequenom, a molecular genetics company based in California. Before joining Sequenom, he held executive roles at AmeriPath, the largest pathology company in the US, including Vice President of Managed Care and Vice President of Operations. His vision for Alliance Health Sciences is to be a regionally recognized laboratory for unsurpassed expertise in subspecialized pathology, uncompromising quality and outstanding customer service

Stefanie Marsh + Read Bio

As Vice President of Business Development, Stefanie Marsh oversees sales, marketing and business development, with roles in overall product development. With over 15 years of diagnostic industry experience, Stefanie has held roles in sales, customer service, marketing, product development, and clinical laboratory operations. Prior to joining Alliance Health Sciences, Stefanie was the Texas Sales Director for AmeriPath, the largest pathology company in the US, and following that, she was an Associate Vice President at Slone Partners, the top diagnostic recruiting firm in the US. She joined Alliance in 2011 as one of its founding members.

Lynn Ayres + Read Bio

Lynn Ayres joined Alliance Health Sciences as the Laboratory Manager in 2013 after 21 years with AmeriPath, where she gained experience in directing the laboratory technical areas.  She has served in supervisory roles for departmental start up, growth for cytology, histology, image analysis, flow and molecular operations.  Lynn is Six Sigma Black Belt trained and works to ensure patient care is the number one priority.  Lynn obtained a Bachelors of Science in Cytotechnology and is also ASCP certified.