Billings, MTPresident, COO, BizAdvocate at BizAdvocates com Sandy has a Business Administration Degree from La Sierra College and an AA Degree in Marketing. As a LPN for thirteen years, she was a member of Dr. Leonard... Sandy has a Business Administration Degree from La Sierra College and an AA Degree in Marketing. As a LPN for thirteen years, she was a member of Dr. Leonard Bailey's Heart Transplant Team at Loma Linda University Medical Center.