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A National Provider Identifier ( NPI) is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services (CMS). The NPI has replaced the Unique Physician Identification Number (UPIN) as the required identifier for Medicare services, and is used by other payers ...
The eye relief of an optical instrument (such as a telescope, a microscope, or binoculars) is the distance from the last surface of an eyepiece within which the user's eye can obtain the full viewing angle. If a viewer's eye is outside this distance, a reduced field of view will be obtained. The calculation of eye relief is complex, though ...
Pupillary distance. Monocular PD can be measured during an eye test. Pupillary distance ( PD ), more correctly known as interpupillary distance ( IPD) is the distance in millimeters between the centers of each pupil. [1]
Franklin D. Roosevelt. 4,422 days. (1933–1945) William Henry Harrison. 31 days. (1841) This is a list of presidents of the United States by time in office. The listed number of days is calculated as the difference between dates, which counts the number of calendar days except the last day. The length of a full four-year presidential term of ...
The Bell UH-1 Iroquois is a utility helicopter designed for military use. It has a metal fuselage of semi-monocoque construction with tubular landing skids and two rotor blades on the main rotor. Early UH-1 models featured a single Lycoming T53 turboshaft engine in versions with power ratings from 700 to 1,400 shp (522 to 1,040 kW).
The president of the United States ( POTUS) [B] is the head of state and head of government of the United States of America. The president directs the executive branch of the federal government and is the commander-in-chief of the United States Armed Forces . The power of the presidency has grown substantially [12] since the first president ...
Ophthalmology ( / ˌɒfθælˈmɒlədʒi /, OFF-thal-MOL-ə-jee) [1] is a clinical and surgical specialty within medicine that deals with the diagnosis and treatment of eye disorders. [2] A former term is oculism . An ophthalmologist is a physician who undergoes subspecialty training in medical and surgical eye care. [3]
The United States Senate and the lower chamber of Congress, the United States House of Representatives, comprise the federal bicameral legislature of the United States. Together, the Senate and the House maintain authority under Article One of the U.S. Constitution to pass or defeat federal legislation. The Senate has exclusive power to confirm ...