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 https://container/nppes_fhir or https://host:8888/nppes_fhir
• View logs docker-compose logs