Marshfield Clinic Health System has been informed by Welltok, Inc., a vendor that provides mailing services, that Welltok experienced a security incident that impacted some of our patients' personal information. Welltok will be reaching out to patients affected. Welltok is communicating directly with patients by letter about the situation and next steps. The letter from Welltok is not a scam. This incident did not impact systems at Marshfield Clinic. If you have questions, visit www.welltok.com for more information about the incident to view this notice.
Specialties > Sleep Medicine > Sleep Study Patient Resources
Before you come for your sleep study, please review the document below for your location. This includes where you should go, what you should bring and what you can expect during your sleep study.
Call: 866-520-2510 Monday-Friday 8 a.m. - 5 p.m.
Request appointment
Find a Sleep Specialist
Find a Sleep Location
Provider referrals
Sleep study patient resources
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