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Sheena Mathieson

@sheenamathieson

Healthcare case manager at Michael Garron Hospital who coordinated complex ACT care and managed a multi-stage IVIG appeal through approval.

United States
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At Michael Garron Hospital, I managed an active Assertive Community Treatment caseload for adults with severe and persistent mental illness and complex medical, housing, financial, and community-service needs. I coordinated care plans, assessments, referrals, and follow-up with clients and multidisciplinary partners.

I also supported medication access and treatment continuity, including preparing prescribed medications after RN verification, documenting adherence, and coordinating concerns with nursing, psychiatry, and pharmacies. My work included crisis assessment, de-escalation, and forensic reporting requirements.

Since 2011, I’ve coordinated family healthcare, educational, behavioral-health, and service advocacy across providers, schools, insurers, and community organizations. I managed a multi-stage appeal for physician-prescribed IVIG by organizing medical evidence, coordinating specialist documentation, and tracking insurer requirements through approval.

Alongside my healthcare background, I completed honors-level accounting education at Santa Monica College. In accounting projects, I worked with reconciliations, general ledger tasks, and QuickBooks and built Excel accounting schedules.

Experience

Work history, roles, and key accomplishments

Education

Degrees, certifications, and relevant coursework

Santa Monica College logoSC

Santa Monica College

Associate of Science, Accounting

Grade: Honors

Completed an Associate of Science in Accounting with honors, including applied work in reconciliations, accounts payable and receivable, and general ledger accounting.

Santa Monica College logoSC

Santa Monica College

Certificate of Achievement, Bookkeeping

Earned a Certificate of Achievement in Bookkeeping, covering advanced bookkeeping, QuickBooks, and Excel for accounting.

Santa Monica College logoSC

Santa Monica College

Coursework, Early Childhood Education

Completed 12 units of Early Childhood Education coursework, including child growth and development and strategies for challenging behaviors.

Georgian College logoGC

Georgian College

Postgraduate Diploma, Therapeutic Recreation

Grade: Honors

Earned a Postgraduate Diploma in Therapeutic Recreation with honors, recognized as a U.S. graduate-level equivalent by WES.

Humber College logoHC

Humber College

Associate of Arts, Recreation Leadership

Earned an Associate of Arts in Recreation Leadership, recognized as a U.S. associate degree equivalent by WES.

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