Stericycle Inc (NASDAQ: SRCL )'s results for the fourth-quarter of 2012 exceeded consensus expectations, as revenue increased by 12.8% year over year. The domestic market saw decent organic growth; both in large-quantity as well as small-quantity business. The key driver to the organic growth is its "cross-selling service" to existing customers. Stericycle's 541,000 medical waste consumer base, provides an excellent platform for other services like: compliance training, sharps management, and patient communications.