The eHMP Clinical Practice Environment is a web application that will ultimately perform many of the functions of the VA's Computerized Patient Record System (CPRS). The CPE utilizes VistA Exchange as its source of patient data via the VistA Exchange API (VX-API). The web application is developed as a Single Page Application using a custom web SDK. The SDK provides the following:
- Application Development Kit (ADK) for UI development with Marionette/Backbone
- Resource Development Kit (RDK) for developing REST services using Node/Express
- VistA Exchange API (VX-API) for interfacing with the VistA Exchange patient record cache and VistA
The SDK provides common cross cutting concerns including accessing the patient record, the ability to add incremental functionality to the web application through the development of applets, and the ability to develop new REST services against VistA Exchange.
Electronic Health Management Platform (eHMP) is the replacement to the Computerized Patient Record System (CPRS) GUI.
eHMP in FTL
PDF about eHMP in FTL
eHMP SDK Access
Developers will be provided access to the SDK when a ticket is submitted into the helpdesk system using the request type: Source Code -> GitHub Repository Access Request
A GitHub username (not email address) will be needed to grant access. If a user doesn't already have a GitHub account, a free account can be created from here: http://github.com
eHMP Developer Server Requests
To request access to a server front-end for eHMP at this time it is necessary to go though your Innovation Coordinator. Once you or your team has been approved by contractual agreement or other means, request an eHMP Development Environment through the helpdesk system at: http://help.vaftl.us
The ticket type should be: Sandbox -> Infrastructure -> Virtual Server -> New Custom Server
For the description you must supply the Project ID, Project Description, and state a new eHMP Development Workstation is required.
Additionally, all persons to have access to the server must provide the following information:
Full Name, Email Address, Phone Number, GitHub Username, FTL/Sandbox Username (vaphsxxxx)
Connecting to eHMP Development Workstation
The following guide shows how to establish a connection with an eHMP development workstation in the Future Technology Laboratory (FTL)
Sample Server & Logins
The FTL's eHMP instance is connected to two VistA sites, each with over 1600 patients, as well as mock DOD and VLER data. A demonstration site is available here which provides friendly browser based interaction and exploration of the REST API:
The test data set also includes several hundred providers, including the VA Training set. Below is login information that can be used in the "authenticate" message. Each VistA login via REST requires an access code, a verify code and a site code. Think of it as "username" and "password" and "location".
The data for the patients is available for download at
Each folder is a patient id (ICN is available, otherwise <site_id>-<dfn>). This zip file can be extracted and searched for particular instances of data. For example:
ls -S ./*/*vital.json | head -n 20 | xargs grep total
will return a sorted list of patients by number of vital records.