6. Business Acquisitions: During 2013, the Company completed the acquisition of 11 physician group practices for total consideration of $250.1 million, consisting of $236.7 million in cash and $13.4 million of contingent consideration. In connection with these acquisitions, the Company recorded goodwill of approximately $228.6 million, other intangible assets consisting primarily of physician and hospital agreements of approximately $29.6 million, and other liabilities of approximately $8.1 million. These acquisitions expand the Company s national network of physician practices. The Company expects to improve the results of these physician practices through improved managed care contracting, improved collections, identification of growth initiatives, as well as, operating and cost savings based upon the significant infrastructure it has developed. The contingent consideration of $13.4 million recorded during 2013 is related to agreements to pay additional amounts based on the achievement of certain performance measures for up to five years ending after the acquisition dates. The accrued contingent consideration for each acquisition was recorded at acquisition-date fair value using the income approach with assumed discount rates ranging from 2.5% to 4.0% over the applicable terms and an assumed payment probability of 100% for each of the applicable years. The range of the undiscounted amount the Company could pay under the contingent consideration agreements that were recorded with a fair value of $13.4 million is between $0 and $14.6 million. In addition, during 2013, the Company recorded an increase of $2.7 million related to the change in the fair value of a contingent consideration agreement for which the probability of the achievement of certain performance measures was initially deemed to be remote, resulting in no contingent consideration being recorded at the time of acquisition. The Company also recorded a decrease of $0.9 million related to the change in fair value of certain contingent consideration agr