Identifiers

Every HCP endpoint references a professional by one of these handles. The AggKnowledge aggkHcpId is the stable primary key — store it once matched. The registry identifiers are strong acquisition keys you match on.

IdentifierRegionNotes
aggkHcpIdGlobalAggKnowledge’s stable ID — global, not tied to any one registry or region. The path parameter on every get and sub-resource endpoint. Store it after the first match.
npiUnited StatesNational Provider Identifier.
gmcUnited KingdomGeneral Medical Council reference number.
rppsFranceRépertoire Partagé des Professionnels de Santé number.
orcidGlobalResearcher identifier, common on publications.
Tip: A registry identifier resolves to exactly one professional, so matching on one is the most reliable path. Persist the returned aggkHcpId and reference it directly thereafter.

When the professional is also present in the person graph, aggkPersonId links the record to a full Person — join clinical activity to work history and contact data.