{"npi":"1275875155","type":"NPI-1","status":"active","name":{"display":"Dr. Otto Metzger M.D.","other":[],"first":"OTTO","last":"METZGER","credential":"M.D."},"specialty":{"primary_taxonomy":"207RX0202X","primary_taxonomy_description":"Medical Oncology Physician","slug":"medical-oncology-physician","schema_org_specialty":null,"all":[{"code":"207RX0202X","description":"Medical Oncology Physician","primary":true,"state":"MA","license":"254087"}]},"addresses":[{"purpose":"LOCATION","street_1":"450 BROOKLINE AVE","city":"BOSTON","state":"MA","postal_code":"022155418","country_code":"US","phone":"6177633110"},{"purpose":"MAILING","street_1":"450 BROOKLINE AVE","city":"BOSTON","state":"MA","postal_code":"022155418","country_code":"US","phone":"6177633110"}],"license":{"state":"MA","number":"254087"},"identifiers":[],"pecos":{"enrolled_at":"2026-05-09T10:41:39.028268+00:00","enrollments":[{"enrlmt_id":"I20180830001488","type_code":"14-90","type_desc":"PRACTITIONER - MEDICAL ONCOLOGY","state":"MA","pac_id":"7517217250"}]},"enumeration_date":"2013-03-19","last_updated":"2013-03-19","_meta":{"source":"NPPES","snapshot_date":"2013-03-19","doc_url":"https://findmynpi.com/api"}}