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Master Person Service (MPS)

The Master Person Service (MPS) is an enhanced person-matching algorithm that increases the number of linkable records where incomplete records have been submitted.

The Master Person Service (MPS) helps us increase the amount of usable, better quality data available to support research and planning. Patients can visit multiple places where they register to receive care or treatment. This information is stored and recorded in various systems around the country. MPS aims to match the right person with the right record with a 99% accuracy rate.

MPS verifies the demographic information contained in a person’s health and care records and matches it to their unique NHS number to confirm their identity. A four-stage algorithm is used to provide a single best result for each record against the Personal Demographics Service (PDS).

When a record is requested, the core data processing service assesses the Data Quality (DQ) and where supplied, NHS Number is then cross-checked with the associated demographic data items within the Personal Demographics Service (PDS) which, is updated daily.

  • Where NHS Number is verified, the record is not passed to MPS. 
  • Where NHS Number cannot be verified or has not been provided, the record is sent to MPS for further processing.

MPS then attempts to match all the records to a single NHS Number held in the PDS.  MPS also checks demographic details supplied in the submitted data file, such as age, gender and postcode, for their ‘closeness’ to the data held in PDS and produces an associated match confidence score.

Further information

  1. internal

    Data Access Environment (DAE)

    The Data Access Environment (DAE) is the secure way users can remotely access better linked information and ensures the right person, with the right permissions gets the right data, in accordance with their Data Sharing Agreement (DSA).

  2. internal

    De-ID

    ‘De-identification’ protects people’s data and enables safe linkage across data sources. This enriches analysis by providing a more complete picture of health and care data.

  3. internal

    Data Access Request Service (DARS)

    The Data Access Request Service (DARS) can offer clinicians, researchers and commissioners the data required to help improve NHS services. We handle applications, process data and provide access to specific sets of data when requests are approved.

Last edited: 15 October 2020 1:29 pm