{"npi":"1275559403","type":"NPI-1","status":"active","name":{"display":"Vivian Hayashi MD","other":[],"first":"VIVIAN","last":"HAYASHI","credential":"MD"},"specialty":{"primary_taxonomy":"207R00000X","primary_taxonomy_description":"Internal Medicine","slug":"internal-medicine","schema_org_specialty":"Internal","all":[{"code":"207R00000X","description":"Internal Medicine","primary":true,"state":"NY","license":"234959"}]},"addresses":[{"purpose":"LOCATION","street_1":"423 E 23RD ST","city":"NEW YORK","state":"NY","postal_code":"100105011","country_code":"US","phone":"2126867500"},{"purpose":"MAILING","street_1":"423 E 23RD ST","city":"NEW YORK","state":"NY","postal_code":"100105011","country_code":"US","phone":"2126867500"}],"license":{"state":"NY","number":"234959"},"identifiers":[],"pecos":{"enrolled_at":"2026-05-09T10:41:39.028268+00:00","enrollments":[{"enrlmt_id":"I20160427001990","type_code":"33-11","type_desc":"ORDER AND REFERRING ONLY - INTERNAL MEDICINE","state":"NY","pac_id":"8123217452"}]},"enumeration_date":"2006-07-14","last_updated":"2009-03-24","_meta":{"source":"NPPES","snapshot_date":"2009-03-24","doc_url":"https://findmynpi.com/api"}}