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MCIS is the information technology division of Marshfield Clinic Health System.

Our partnership with Marshfield Clinic Health System supports the development of emerging technology. We are designed to inspire ideas and innovation that drives effective health care delivery across the continuum of care.

Explore MCIS

Client Portal

Access CattailsMD for technical documentation, training materials, model work flow and online technical support with your user ID and password.

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Contact Us

​1701 N. Fig Avenue, Marshfield, WI 54449

Phone: 844-531-6247

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