{"result_count":1,"results":[{"addresses":[{"address_1":"928 3RD AVE","address_purpose":"MAILING","address_type":"DOM","city":"SHELDON","country_code":"US","country_name":"United States","fax_number":"712-324-2553","postal_code":"512011549","state":"IA","telephone_number":"712-324-2552"},{"address_1":"928 3RD AVE","address_purpose":"LOCATION","address_type":"DOM","city":"SHELDON","country_code":"US","country_name":"United States","fax_number":"712-324-2553","postal_code":"512011549","state":"IA","telephone_number":"712-324-2552"}],"basic":{"authorized_official_credential":"OD","authorized_official_first_name":"MATTHEW","authorized_official_last_name":"RADKE","authorized_official_middle_name":"LEE","authorized_official_name_prefix":"Dr.","authorized_official_telephone_number":"7123242552","authorized_official_title_or_position":"Partner","certification_date":"2025-11-19","enumeration_date":"2006-01-30","last_updated":"2025-11-19","organization_name":"SPRONK VANDER GRIEND & RADKE","organizational_subpart":"NO","status":"A"},"created_epoch":"1138637553000","endpoints":[],"enumeration_type":"NPI-2","identifiers":[{"code":"05","desc":"MEDICAID","identifier":"0280586","issuer":null,"state":"IA"},{"code":"01","desc":"Other (non-Medicare)","identifier":"33330","issuer":"Group ID","state":"IA"},{"code":"01","desc":"Other (non-Medicare)","identifier":"CS7580","issuer":"RR Medicare","state":"IA"},{"code":"01","desc":"Other (non-Medicare)","identifier":"I7584","issuer":"Medicare Group ID","state":"IA"}],"last_updated_epoch":"1763568969000","number":"1346211257","other_names":[{"code":"3","organization_name":"DRS. SPRONK, VANDER GRIEND & RADKE","type":"Doing Business As"}],"practiceLocations":[],"taxonomies":[{"code":"152W00000X","desc":"Optometrist","license":null,"primary":true,"state":null,"taxonomy_group":"193400000X - Single Specialty Group"}]}]}