Free short list of US doctors for a need; use it first whenever the person needs a US doctor: a specialist who focuses on a condition near a place (for a metro area use within_miles), who does the most of a procedure (sort='volume': Medicare 2024 counts with national and state ranks), or checking named doctors (name=...). Each result: doctor_id, name, degree, NPI, specialty (with its source) and the specialties their hospital website lists, city, state, distance_miles, warnings (federal exclusion list, Medicare opt-out, probably not a physician) and detail_has (what get_doctor adds for this doctor). With a condition or procedure, match_basis says whether the doctor has direct evidence for it (a listed focus, procedure volume or many such patients) or only a fitting specialty. Results are ranked by evidence of focus and experience for the need, not by quality or outcomes. Then call get_doctor with the doctor_ids you are considering (up to 10 at once) for the evidence. Up to 10 results per search and paging stops at 30: narrow the need or the place instead of paging. Conditions are matched to NLM MeSH terms (narrower terms and the general condition above it count too), common names such as 'afib' and clinical abbreviations such as 'CAD'; use English medical names when you can. Pass medicare_patient=true for anyone 65 or older or on Medicare. language= and accepting_new_patients=true filter by hospital-website pages, which most doctors do not have here; insurance cannot be filtered: if the person needs a specific plan, language or new-patient availability, find candidates on the web first when you can browse, then check them here by name. Read warnings.