{"npi":"1619968021","type":"NPI-1","status":"active","name":{"display":"Dr. Darby Clayson MD","other":[],"first":"DARBY","last":"CLAYSON","middle":"ANNETTE","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":"CA","license":"A139455"},{"code":"171000000X","description":"Military Health Care Provider","primary":false,"state":"NV","license":"11502"},{"code":"207R00000X","description":"Internal Medicine","primary":false,"state":"NV","license":"11502"}]},"addresses":[{"purpose":"LOCATION","street_1":"1575 7TH AVE","city":"SAN FRANCISCO","state":"CA","postal_code":"941223704","country_code":"US","phone":"7024533799","fax":"7024535741"},{"purpose":"MAILING","street_1":"PO BOX 31085","city":"SAN FRANCISCO","state":"CA","postal_code":"941310085","country_code":"US","phone":"7024533799","fax":"7024535741"}],"license":{"state":"CA","number":"A139455"},"identifiers":[],"pecos":{"enrolled_at":"2026-05-09T10:41:39.028268+00:00","enrollments":[{"enrlmt_id":"I20160323000586","type_code":"14-C6","type_desc":"PRACTITIONER - HOSPITALIST","state":"CA","pac_id":"0042221368"}]},"enumeration_date":"2005-11-03","last_updated":"2026-02-27","_meta":{"source":"NPPES","snapshot_date":"2026-02-27","doc_url":"https://findmynpi.com/api"}}