National Health Information Incentive Act of 2005

National Health Information Incentive Act of 2005 - Establishes within the executive office of the President an Office of the National Coordinator for Health Information Technology.

Amends title XI of the Social Security Act to add a new part D (Standards for Building The National Health Information Infrastructure) to direct the Secretary to develop or adopt standards for transactions and data elements for such transactions to enable the creation of a national health care information infrastructure.

Requires the Secretary to include additional Medicare payment incentives to assure small health care providers have the capability to move toward a national health care information infrastructure by acquiring electronic health record systems and other health information technologies that meet such standards.

Provides for optional financial incentives to small health care providers and entities to implement a national health information infrastructure.

Authorizes the Secretary to: (1) make grants to small health care providers and entities for expenditures relating to the implementation of a national health information infrastructure; and (2) make and guarantee loans to small health care providers for the purpose of assisting them to implement, design, test, acquire, and adopt electronic health records and other health information technologies.

Amends the Internal Revenue Code to provide for a refundable credit for a portion of the expenses of for establishing a health care information technology system (infrastructure).