NAP consistency. Your business name, address and phone number should match exactly across your Google Business Profile, your website contact page and footer, Apple Business Connect, Bing Places, Facebook, Yelp and the directories for your industry. If the profile says "123 Main Street, Suite 200", do not use "123 Main St, Ste 200" elsewhere.
Industry directories. Healthcare, legal, hospitality and home services each have their own directories. Claim the ones customers in your trade actually use, and fix mismatches as soon as you find them.
Schema. LocalBusiness markup in JSON-LD on your website, with name, address, telephone, opening hours and coordinates that match the profile, helps Google connect the two. Multi-location businesses need markup for each location. Test it with Google's Rich Results Test.
Read next: how to rank in Google Maps and how to get more Google reviews.