| **Exhibit 31.2 –** | **CERTIFICATION PURSUANT TO RULE 13a-14(a) OF    THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED** |
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| 1.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                | I have reviewed this Form 10-Q of Genesis HealthCare Corporation; |
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|    2.Based on my knowledge, this report does not contain any untrue    statement of a material fact or omit to state a material fact necessary to    make the statements made, in light of the circumstances under which such    statements were made, not misleading with respect to the period covered by    this report;   3.Based on my knowledge, the financial statements, and other financial    information included in this report, fairly present in all material respects    the financial condition, results of operations and cash flows of the    registrant as of, and for, the periods presented in this report;   4.The registrant’s other certifying officer and I are responsible for    establishing and maintaining disclosure controls and procedures (as defined in    Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over    financial reporting (as defined in Exchange Act Rules 13a-15(f) and    15d-15(f)) for the registrant and have:    a)Designed such disclosure controls and procedures, or caused such disclosure    controls and procedures to be designed under our supervision, to ensure that    material information relating to the registrant, including its consolidated    subsidiaries, is made known to us by others within those entities,    particularly during the period in which this report is being prepared;    b)Designed such internal control over    financial reporting, or caused such internal control over financial reporting    to be designed under our supervision, to provide reasonable assurance    regarding the reliability of financial reporting and the preparation of    financial statements for external purposes in accordance with generally    accepted accounting principles;    c)Evaluated the effectiveness of the registrant’s disclosure controls    and procedures and presented in this report our conclusions about the    effectiveness of the disclosure controls and procedures, as of the end of the    period covered by this report based on such evaluation; and    d)Disclosed in this report any change in the registrant’s internal    control over financial reporting that occurred during the registrant’s most    recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of    an annual report) that has materially affected, or is reasonably likely to    materially affect, the registrant’s internal control over financial    reporting; and   5.The registrant’s other certifying officer and I have disclosed, based    on our most recent evaluation of internal control over financial reporting,    to the registrant’s auditors and the audit committee of the registrant’s    board of directors (or persons performing the equivalent functions):    a)All significant deficiencies and material weaknesses in the design or    operation of internal control over financial reporting which are reasonably    likely to adversely affect the registrant’s ability to record, process,    summarize and report financial information; and    b)Any fraud, whether or not material, that involves management or other    employees who have a significant role in the registrant’s internal control    over financial reporting. Date:  February 8, 2006/s/ James V.    McKeon  James V.    McKeon Chief    Financial Officer  |