{"npi":"1154733152","type":"NPI-1","status":"active","name":{"display":"Zachary Fellows M.D.","other":[],"first":"ZACHARY","last":"FELLOWS","middle":"THOMAS","credential":"M.D."},"specialty":{"primary_taxonomy":"207RR0500X","primary_taxonomy_description":"Rheumatology Physician","slug":"rheumatology-physician","schema_org_specialty":null,"all":[{"code":"207RB0002X","description":"Obesity Medicine (Internal Medicine) Physician","primary":false,"state":"CA","license":"A144510"},{"code":"207R00000X","description":"Internal Medicine","primary":false,"state":"CA","license":"A144510"},{"code":"207RR0500X","description":"Rheumatology Physician","primary":true,"state":"CA","license":"A144510"}]},"addresses":[{"purpose":"LOCATION","street_1":"6120 PASEO DEL NORTE STE L2","city":"CARLSBAD","state":"CA","postal_code":"920111149","country_code":"US","phone":"7608914687","fax":"7606848715"},{"purpose":"MAILING","street_1":"6120 PASEO DEL NORTE STE L2","city":"CARLSBAD","state":"CA","postal_code":"920111149","country_code":"US","phone":"7608914687","fax":"7606848715"}],"license":{"state":"CA","number":"A144510"},"identifiers":[],"pecos":{"enrolled_at":"2026-05-09T10:41:39.028268+00:00","enrollments":[{"enrlmt_id":"I20200619001047","type_code":"14-66","type_desc":"PRACTITIONER - RHEUMATOLOGY","state":"CA","pac_id":"0941580708"}]},"enumeration_date":"2014-05-24","last_updated":"2026-01-18","_meta":{"source":"NPPES","snapshot_date":"2026-01-18","doc_url":"https://findmynpi.com/api"}}