No Google will not penalise your site for adding phone nos.

But Its best practice to add keyword than phone no for ex:

Keyword- Phone no| Company name

thanks Keri !

yeah I understand It takes time but most of the sites have strict policy that we can not put any other sites links and its making link building via blogs more and more difficult because of the huge number of spammers on web. And content marketing is future of SEO. So things are getting bit tough for SEOs I guess.