Oklahoma On Call Inc. was founded in 1999 by Sheila J. Stanek, D.O. Dr. Stanek is a board certified family practitioner who has practiced medicine since 1994. Dr. Stanek recognized the need for locum tenens coverage from a local company by local physicians. The company began as Oklahoma On Call, Inc. Initially concentrating on the State of Oklahoma, the company has grown to include nationwide coverage. Due to this expansion, the company adopted a dba of “OOC Locum Tenens and Permanent Placement”.