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 About Marshfield Labs

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​Marshfield Labs is one of the largest full-service private practice laboratory systems in the nation and a leader in laboratory medicine.

As part of the Marshfield Clinic Health System, we benefit from the infrastructure, expertise and reputation of a large, multi-specialty group practice and premier research organization. Our pathologists, clinical scientists and laboratory personnel provide subspecialty expertise in all facets of laboratory medicine and pathology, and are available for consultation in support of our laboratory offerings.

Marshfield Labs' Reference Laboratory was established​ in 1973 to serve the needs of physicians and patients throughout Wisconsin, Upper Michigan, and Eastern Minnesota. Today, we have expanded to multiple lab locations throughout the Midwest offering Veterinary, Research and Tox​icology testing to clients nationwide.

As we have grown we have also advanced. Across all of our labs we are constantly working to provide the most innovative technologies available as well as the expertise our clients have come to expect.  ​​


Marshfield Labs has multiple locations throughout the Midwest. We serve clients nation-wide through our convenient courier service.

1000 N Oak Ave.
Marshfield, WI 54449



 Labs Milestones

  • First US installation of Cerner Labotix automation​​​​​​​​

  • Embraces One Health​’s global strategy

Meet Our Staff

Director, Division of Laboratory Medicine

Richard S. Vander Heide, MD

Lab Administrative Director

Pam Carter

Lab Operations Director | Clinical & Anatomic Services

Shannon Annala

Ancillary IS Solutions Director | Information Services

Jennifer Jirochvong

Lab Operations Director | Quality Management

Sherri Mowbray

Lab Operations Director | Support Services

Jenny Salzwedel

Lab Operations Director | Regional Labs

Tracey Walters