{"npi":"1023081155","type":"NPI-1","status":"active","name":{"display":"Dr. Mark Den Hartog Dc","other":[],"first":"MARK","last":"DEN HARTOG","middle":"J","credential":"DC"},"specialty":{"primary_taxonomy":"111N00000X","primary_taxonomy_description":"Chiropractor","slug":"chiropractor","schema_org_specialty":null,"all":[{"code":"111N00000X","description":"Chiropractor","primary":true,"state":"WA","license":"60741817"}]},"addresses":[{"purpose":"LOCATION","street_1":"1018 7TH AVE SE","city":"OLYMPIA","state":"WA","postal_code":"985011512","country_code":"US","phone":"3604598114","fax":"3604938742"},{"purpose":"MAILING","street_1":"1018 7TH AVE SE","city":"OLYMPIA","state":"WA","postal_code":"985011512","country_code":"US","phone":"3604598114","fax":"3604938742"}],"license":{"state":"WA","number":"60741817"},"identifiers":[],"pecos":{"enrolled_at":"2026-05-09T10:41:39.028268+00:00","enrollments":[{"enrlmt_id":"I20251209004243","type_code":"14-35","type_desc":"PRACTITIONER - CHIROPRACTIC","state":"OR","pac_id":"7618910738"}]},"enumeration_date":"2006-02-09","last_updated":"2018-03-17","_meta":{"source":"NPPES","snapshot_date":"2018-03-17","doc_url":"https://findmynpi.com/api"}}