NAP consistency means having identical Name, Address, and Phone information across every online directory. Inconsistency silently suppresses local search rankings by creating entity disambiguation signals that reduce Google confidence in your information.
NAP stands for Name, Address, Phone. These three data points appear across dozens of online directories from Google Business Profile to Healthgrades to Yelp to Bing Places. When Google cross-references these sources and finds inconsistencies it reduces confidence in which information is correct and suppresses local rankings accordingly as a quality signal.
Practices change phone numbers or locations and update some directories but not others. Different staff create listings with slightly different formatting. The practice name appears differently across platforms. Even minor inconsistencies in address abbreviations, Street versus St, Road versus Rd, create the disambiguation signals that suppress rankings.
Run the practice name and address through a citation checker tool like Moz Local, BrightLocal, or Synup. These tools automatically check your information across 50 to 100 major directories and flag inconsistencies. A manual spot-check of the top 10 directories including Google, Yelp, Healthgrades, and Bing provides a quick initial assessment.
Citation corrections take 30 to 90 days to propagate across directories and be recrawled by Google. The ranking impact of NAP cleanup is gradual rather than dramatic. NAP consistency is foundational rather than a ranking accelerant. Its absence actively suppresses rankings but its presence alone does not produce dramatic improvements without the other local SEO signals in place.
Real campaign results from a similar practice.