A simple hack/demonstration of how to access provider directory (NPPES) via FHIR services
Requires:
- Elasticsearch - to serve as database for NPPES records (Lucene)
- Flask - simple python web server
- gunicorn - WSGI gateway to expose the Flask app to the web
Very brief instructions:
- Install and launch Elasticsearch. I took all the defaults, which is overkill, but it works
- Use python to "pip install" Flask, elasticsearch, and gunicorn
- run the "download.sh" script in NPPES_data to download the NPPES file from CMS, and the "taxonomy" file from NUCC.
- the bulk_load_nppes script can now read directly from the zip file, so there is no need to extract the 5GB CSV file
- Run 'bulk_load_nppes'
- It should find the right ZIP and CSV files. If not, pass them in on the comand line.
- It should default to point to your local install of ElasticSearch. If not, look in the code to see which environment variables to set to point to your instance of ES.
- Loading the ~3.7M records takes about 5-6 minutes on my i7/SSD. Ignore the error messages about non-Ascii provider entries. That's a bug to be fixed, but obly drops a relatively few provider names. You only need to load the provider records into elasticsearch once, of course.
- Run "serve_nppes' to test locally (defaults to 127.0.0.1:5000/nppes_fhir)
- Deploy to web by running gunicorn to serve up serve_nppes:app (the WSGI entry point.)
gunicorn -b 0.0.0.0:80 -w 4 serve_nppes:app
More details:
Set up git, Python 2.7, and elasticsearch on localhost, then:
git clone https://github.com/dmccallie/nppes_fhir_demo/
cd nppes_fhir_demo
pip install -r requirements.txt
cd NPPES_data
sh ./download.sh
cd ../nppes_fhir_demo
python load_nppes_bulk.py
# in local env
python serve_nppes.py
# in prod
gunicorn -b 0.0.0.0:8080 serve_nppes:app
- Install docker (https://docs.docker.com/installation/)
- Install docker-compose (https://docs.docker.com/compose/install/)
- Launch the stack:
docker-compose up
- Load sample data:
docker-compose run web /code/nppes_fhir_demo/load_data.sh
- Try it: browse to http://container/nppes_fhir or http://host:8888/nppes_fhir
- View logs
docker-compose logs