Sheila Tonn-Knopf, Chief Executive Officer

Sheila Tonn-Knopf is the chief executive officer of Select Specialty Hospital – Cleveland Gateway. In this role since 2021, she oversees hospital operations, patient experience and referral relationships.

Sheila joined Select from GBS Corporation, a diversified productivity services company, where she served as director of revenue cycle strategies. In that role, Sheila developed and implemented a new marketing, branding and sales structure and oversaw a million-dollar sales pipeline. Prior to GBS, Sheila was also the founder and CEO of Tenamark, a patient care services company.

Previously, she worked as COO and principal of SignalTree Holdings, the parent organization to several home health and hospice companies in northern Ohio and eastern Pennsylvania. Additionally, Sheila was the director of operations for NorthShore Healthcare.

Earlier, she was the director of the Center for Orthopedics at University Hospitals and administrator of Summit Pain Specialists.

Sheila has a Master of Healthcare Administration and Bachelor of Science in communications from Ohio University. Sheila also earned a fellowship from Cincinnati Hematology Oncology.


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Select Specialty Hospital is a critical illness recovery hospital, specializing in helping critically ill patients breathe, speak, eat, walk and think as independently as possible.