{"npi":"1811284375","type":"NPI-1","status":"active","name":{"display":"Nathan Tonlaar M.D.","other":[],"first":"NATHAN","last":"TONLAAR","middle":"YENNUMI","credential":"M.D."},"specialty":{"primary_taxonomy":"2085R0001X","primary_taxonomy_description":"Radiation Oncology Physician","slug":"radiation-oncology-physician","schema_org_specialty":null,"all":[{"code":"2085R0001X","description":"Radiation Oncology Physician","primary":false,"state":"MI","license":"4301099423"},{"code":"2085R0001X","description":"Radiation Oncology Physician","primary":true,"state":"MO","license":"2016014780"}]},"addresses":[{"purpose":"LOCATION","street_1":"2055 S FREMONT AVE","city":"SPRINGFIELD","state":"MO","postal_code":"658042206","country_code":"US","street_2":"MERCY CLINIC RADIATION ONCOLOGY, CHAUB O'REILLY CENTER","phone":"4178202468","fax":"4178207794"},{"purpose":"MAILING","street_1":"2055 S FREMONT AVE","city":"SPRINGFIELD","state":"MO","postal_code":"658042206","country_code":"US","street_2":"MERCY CLINIC RADIATION ONCOLOGY, CHAUB O'REILLY CENTER","phone":"4178202468","fax":"4178207794"}],"license":{"state":"MO","number":"2016014780"},"identifiers":[],"pecos":{"enrolled_at":"2026-05-09T10:41:39.028268+00:00","enrollments":[{"enrlmt_id":"I20160811000338","type_code":"14-92","type_desc":"PRACTITIONER - RADIATION ONCOLOGY","state":"MO","pac_id":"7911291117"}]},"enumeration_date":"2011-07-06","last_updated":"2016-06-02","_meta":{"source":"NPPES","snapshot_date":"2016-06-02","doc_url":"https://findmynpi.com/api"}}