{"npi":"1235184573","type":"NPI-1","status":"active","name":{"display":"Robert Gerszten MD","other":[],"first":"ROBERT","last":"GERSZTEN","middle":"E","credential":"MD"},"specialty":{"primary_taxonomy":"207RC0000X","primary_taxonomy_description":"Cardiovascular Disease","slug":"cardiology","schema_org_specialty":"Cardiovascular","all":[{"code":"207RC0000X","description":"Cardiovascular Disease","primary":true,"state":"MA","license":"77859"}]},"addresses":[{"purpose":"LOCATION","street_1":"32 FRUIT STREET","city":"BOSTON","state":"MA","postal_code":"021142620","country_code":"US","street_2":"CARDIOLOGY - YAWKEY OUTPATIENT CENTER","phone":"6177266760"},{"purpose":"MAILING","street_1":"149 13TH STREET, ROOM 8307","city":"CHARLESTOWN","state":"MA","postal_code":"021292020","country_code":"US","phone":"6177248322","fax":"6177261544"}],"license":{"state":"MA","number":"77859"},"identifiers":[],"pecos":{"enrolled_at":"2026-05-09T10:41:39.028268+00:00","enrollments":[{"enrlmt_id":"I20060328000428","type_code":"14-06","type_desc":"PRACTITIONER - CARDIOVASCULAR DISEASE (CARDIOLOGY)","state":"MA","pac_id":"7911915277"}]},"enumeration_date":"2006-05-24","last_updated":"2007-07-08","_meta":{"source":"NPPES","snapshot_date":"2007-07-08","doc_url":"https://findmynpi.com/api"}}