NPPES matches the specialty against all of a provider's taxonomies. Turn this on to keep only providers whose primary taxonomy contains your specialty text. Filtered-out providers are not charged.
NPI Registry Lookup - Bulk NPI Search & Healthcare Providers
Pricing
from $0.64 / 1,000 provider records
NPI Registry Lookup - Bulk NPI Search & Healthcare Providers
Bulk NPI lookup and US healthcare provider search from the official CMS NPPES NPI Registry API: NPI numbers or specialty + city/state/ZIP to name, taxonomy, license, practice address and phone. $0.80 per 1,000 records; invalid and not-found NPIs free.