PHP Function Reference/is page

<?php if(is_page(9)): ?> itemscope="" itemtype="http://schema.org/Physician" <?php endif; ?>

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 <?php is_page($page); ?>
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is_page();
// When any single Page is being displayed.

is_page( 42 );
// When Page 42 (ID) is being displayed.

is_page( 'Contact' );
// When the Page with a post_title of "Contact" is being displayed.

is_page( 'about-me' );
// When the Page with a post_name (slug) of "about-me" is being displayed.

is_page( array( 42, 'about-me', 'Contact' ) );
// Returns true when the Pages displayed is either post ID 42, or post_name "about-me", or post_title "Contact".  Note: the array ability was added at Version 2.5.