{"npi":"1730140724","type":"NPI-1","status":"active","name":{"display":"Dr. Robert O'brian M.D.","other":[],"first":"ROBERT","last":"O'BRIAN","credential":"M.D."},"specialty":{"primary_taxonomy":"207RR0500X","primary_taxonomy_description":"Rheumatology Physician","slug":"rheumatology-physician","schema_org_specialty":null,"all":[{"code":"207RR0500X","description":"Rheumatology Physician","primary":true,"state":"NC","license":"9901590"}]},"addresses":[{"purpose":"LOCATION","street_1":"6190 GEORGETOWN BLVD","city":"ELDERSBURG","state":"MD","postal_code":"21784","country_code":"US","street_2":"SUITE 110","phone":"4107959700","fax":"4107957500"},{"purpose":"MAILING","street_1":"6190 GEORGETOWN BLVD","city":"ELDERSBURG","state":"MD","postal_code":"21784","country_code":"US","street_2":"SUITE 110","phone":"4107959700","fax":"4107957500"}],"license":{"state":"NC","number":"9901590"},"identifiers":[],"pecos":{"enrolled_at":"2026-05-09T10:41:39.028268+00:00","enrollments":[{"enrlmt_id":"I20200520000079","type_code":"14-66","type_desc":"PRACTITIONER - RHEUMATOLOGY","state":"MD","pac_id":"7719138049"}]},"enumeration_date":"2006-03-29","last_updated":"2020-10-06","_meta":{"source":"NPPES","snapshot_date":"2020-10-06","doc_url":"https://findmynpi.com/api"}}