Data sources

Every published fact states its origin and the date it was observed. When a fact passes its validity window we mark it as needing confirmation rather than presenting it as current.

SourceWhat it providesRefreshReliability
INEGI, DENUECensus of economic units, including practices with no presence on the internet.MonthlyHigh for existence and location. Phone numbers and emails are often empty.
DGIS, CLUES catalogOfficial register of health establishments: institution, facility type, beds and consulting rooms.MonthlyHigh. It is the sector's official register.
OpenStreetMapGeometry and borough boundaries. ODbL licence.MonthlyVaries by area.
Consejo de Salubridad GeneralCertification of medical care establishments.QuarterlyHigh. Always shown with its scheme, scope and date.
SEP, Registro Nacional de ProfesionistasProfessional licence (cédula) verification.Continuous, through a verification queueHigh. We verify person by person, because no official bulk download exists.
Hospital medical directoriesMedical staff published by hospital groups.MonthlyMedium. Hospitals are slow to remove people who no longer practise there.
Insurer provider listsProvider networks published by insurers.MonthlyLow. They change without notice and are often out of date at the source. Always confirm with the practice before your appointment.

Precedence

When two sources contradict each other, the more authoritative one wins: what the practice confirmed replaces what was imported, and what was imported from an official register replaces what a user reported. Nothing is deleted: the losing observation is kept and the decision is reversible.