Yes you can; it works on Android too:
tel: phone_number
Calls the entered phone number. Valid telephone numbers as defined in the IETF RFC 3966 are accepted. Valid examples include the following:* tel:2125551212 * tel: (212) 555 1212
The Android browser uses the Phone app to handle the “tel” scheme, as defined by RFC 3966.
Clicking a link like:
<a href="tel:2125551212">2125551212</a>
on Android will bring up the Phone app and pre-enter the digits for 2125551212 without autodialing.
Have a look to RFC3966