{"result_count":1,"results":[{"addresses":[{"address_1":"PO BOX 342","address_purpose":"MAILING","address_type":"DOM","city":"BROKEN ARROW","country_code":"US","country_name":"United States","fax_number":"918-995-3773","postal_code":"740130342","state":"OK","telephone_number":"918-806-8050"},{"address_1":"511 N ASPEN AVE","address_purpose":"LOCATION","address_type":"DOM","city":"BROKEN ARROW","country_code":"US","country_name":"United States","fax_number":"918-995-3773","postal_code":"740122220","state":"OK","telephone_number":"918-806-8050"}],"basic":{"certification_date":"2026-04-23","credential":"DO","enumeration_date":"2006-12-19","first_name":"DENNIS","last_name":"BLACKSTAD","last_updated":"2026-04-23","middle_name":"SIDNEY","sex":"M","sole_proprietor":"NO","status":"A"},"created_epoch":"1166522400000","endpoints":[],"enumeration_type":"NPI-1","identifiers":[{"code":"05","desc":"MEDICAID","identifier":"100171140A","issuer":null,"state":"OK"}],"last_updated_epoch":"1776943149000","number":"1710040894","other_names":[],"practiceLocations":[],"taxonomies":[{"code":"207Q00000X","desc":"Family Medicine","license":"3650","primary":true,"state":"OK","taxonomy_group":""},{"code":"207P00000X","desc":"Emergency Medicine","license":"3650","primary":false,"state":"OK","taxonomy_group":""}]}]}