Veterans Home And Hospital · Referral network
HSA 7007 · 2014 · 1117 physicians · 8000 edges
Running from SQLite — no Neo4j required. Regional and HSA dashboards, this force graph, curvature histogram, and hub rankings all work out of the box. Advanced users can optionally load the graph into a self-hosted Neo4j instance (docker compose up -d, then npm run etl-to-neo4j) for the Cypher playground and Neo4j Browser.
Force-directed graph · edges coloured by Forman–Ricci curvature
Loading graph engine…
Curvature distribution
Mean F
-2,452,468
Median F
-776,760
Min F
-48,891,218
Max F
360
From referral_network_features
Precomputed on the full thresholded network (all edges, Python toolkit, unit node weights).
Nodes
1,735
Edges
49,757
Avg clustering
0.665
Density
0.0331
Forman μ
-123.3
Forman σ
182.2
Rendered graph structure
Live computation on up to 8,000 edges (SQLite row order, node-strength weights). Values will differ from precomputed stats above for large HSAs.
Total weight
492,253
Avg degree
14.32
Max degree
320
Negative F edges
7,957
Positive F edges
43
Nonzero F edges
8,000
Reading the graph
Teal edges have positive Forman curvature — efficient information flow.
Red edges have negative curvature — bottlenecks in the referral graph.
Edge width: log(patient count). Node size: degree-weighted strength.
Hub physicians
#1
NPI 1083614531
Degree 320 · weight 30,889
320
#2
NPI 1114915766
Degree 292 · weight 28,987
292
#3
NPI 1447379375
Degree 281 · weight 27,056
281
#4
NPI 1861591885
Degree 266 · weight 23,203
266
#5
NPI 1346240769
Degree 225 · weight 20,580
225
#6
NPI 1528210119
Degree 220 · weight 18,487
220
#7
NPI 1710974738
Degree 110 · weight 17,488
110
#8
NPI 1386897817
Degree 188 · weight 13,856
188
Most negative curvature
#1
Forman -48,891,218
1083614531 → 1710974738
Weight 910 · Forman -48,891,218
#2
Forman -48,886,908
1083614531 → 1447379375
Weight 391 · Forman -48,886,908
#3
Forman -48,275,506
1083614531 → 1346240769
Weight 566 · Forman -48,275,506
#4
Forman -47,130,402
1083614531 → 1114915766
Weight 342 · Forman -47,130,402
#5
Forman -45,943,250
1114915766 → 1710974738
Weight 1,071 · Forman -45,943,250
#6
Forman -44,746,513
1083614531 → 1528210119
Weight 510 · Forman -44,746,513
#7
Forman -43,769,352
1114915766 → 1861591885
Weight 450 · Forman -43,769,352
#8
Forman -39,503,013
1114915766 → 1447379375
Weight 307 · Forman -39,503,013
Strongest referral edges
#1
Weight 1,071
1114915766 → 1710974738
Weight 1,071 · Forman -45,943,250
#2
Weight 910
1083614531 → 1710974738
Weight 910 · Forman -48,891,218
#3
Weight 909
1447379375 → 1699821892
Weight 909 · Forman -36,554,258
#4
Weight 889
1447379375 → 1700876125
Weight 889 · Forman -35,904,928
#5
Weight 856
1710974738 → 1861591885
Weight 856 · Forman -33,189,266
#6
Weight 853
1114906948 → 1730166422
Weight 853 · Forman -123,616
#7
Weight 786
1447379375 → 1710974738
Weight 786 · Forman -37,195,378
#8
Weight 765
1447379375 → 1528090727
Weight 765 · Forman -31,910,675