{"npi":"1952392482","type":"NPI-1","status":"active","name":{"display":"John O'brien M.D.","other":[],"first":"JOHN","last":"O'BRIEN","middle":"T","credential":"M.D."},"specialty":{"primary_taxonomy":"207RC0000X","primary_taxonomy_description":"Cardiovascular Disease","slug":"cardiology","schema_org_specialty":"Cardiovascular","all":[{"code":"207RC0000X","description":"Cardiovascular Disease","primary":true,"state":"VA","license":"0101036720"}]},"addresses":[{"purpose":"LOCATION","street_1":"3300 GALLOWS RD","city":"FALLS CHURCH","state":"VA","postal_code":"220423307","country_code":"US","phone":"7037764001","fax":"7037767113"},{"purpose":"MAILING","street_1":"3300 GALLOWS RD","city":"FALLS CHURCH","state":"VA","postal_code":"220423307","country_code":"US","phone":"7037764001","fax":"7037767113"}],"license":{"state":"VA","number":"0101036720"},"identifiers":[],"pecos":{"enrolled_at":"2026-05-09T10:41:39.028268+00:00","enrollments":[{"enrlmt_id":"I20040512001612","type_code":"14-06","type_desc":"PRACTITIONER - CARDIOVASCULAR DISEASE (CARDIOLOGY)","state":"DC","pac_id":"1557351533"},{"enrlmt_id":"I20200709002864","type_code":"14-06","type_desc":"PRACTITIONER - CARDIOVASCULAR DISEASE (CARDIOLOGY)","state":"VA","pac_id":"1557351533"}]},"enumeration_date":"2005-11-03","last_updated":"2022-01-05","_meta":{"source":"NPPES","snapshot_date":"2022-01-05","doc_url":"https://findmynpi.com/api"}}