{"npi":"1659632230","type":"NPI-1","status":"active","name":{"display":"Martha Herbst M.D.","other":[{"code":"1","type":"Formerly known as","value":"OELSCHLAEGER, MARTHA ELLEN"}],"first":"MARTHA","last":"HERBST","middle":"OELSCHLAEGER","credential":"M.D."},"specialty":{"primary_taxonomy":"207L00000X","primary_taxonomy_description":"Anesthesiology","slug":"anesthesiology","schema_org_specialty":"Anesthesia","all":[{"code":"207L00000X","description":"Anesthesiology","primary":false,"state":"MI","license":"4301100870"},{"code":"207L00000X","description":"Anesthesiology","primary":true,"state":"IA","license":"MD-44689"}]},"addresses":[{"purpose":"LOCATION","street_1":"200 HAWKINS DR","city":"IOWA CITY","state":"IA","postal_code":"522421009","country_code":"US","phone":"3193562633","fax":"3193846265"},{"purpose":"MAILING","street_1":"200 HAWKINS DR","city":"IOWA CITY","state":"IA","postal_code":"522421009","country_code":"US","phone":"3193562633"}],"license":{"state":"IA","number":"MD-44689"},"identifiers":[],"pecos":{"enrolled_at":"2026-05-09T10:41:39.028268+00:00","enrollments":[{"enrlmt_id":"I20180131000705","type_code":"14-05","type_desc":"PRACTITIONER - ANESTHESIOLOGY","state":"IA","pac_id":"6507098381"}]},"enumeration_date":"2012-05-31","last_updated":"2025-03-25","_meta":{"source":"NPPES","snapshot_date":"2025-03-25","doc_url":"https://findmynpi.com/api"}}