Veterans Home And Hospital · Referral network
HSA 7007 · 2017 · 1129 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
-2,085,098
Median F
-535,912
Min F
-67,707,678
Max F
186
From referral_network_features
Precomputed on the full thresholded network (all edges, Python toolkit, unit node weights).
Nodes
1,882
Edges
49,290
Avg clustering
0.633
Density
0.0278
Forman μ
-113.9
Forman σ
161.9
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
457,275
Avg degree
14.17
Max degree
309
Negative F edges
7,967
Positive F edges
33
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 1528210119
Degree 309 · weight 30,035
309
#2
NPI 1750378253
Degree 285 · weight 27,082
285
#3
NPI 1346240769
Degree 272 · weight 25,357
272
#4
NPI 1447379375
Degree 268 · weight 24,027
268
#5
NPI 1114915766
Degree 218 · weight 16,763
218
#6
NPI 1124212758
Degree 213 · weight 15,122
213
#7
NPI 1790943686
Degree 203 · weight 13,144
203
#8
NPI 1699821892
Degree 103 · weight 11,318
103
Most negative curvature
#1
Forman -67,707,678
1346240769 → 1528210119
Weight 884 · Forman -67,707,678
#2
Forman -47,501,359
1528210119 → 1750378253
Weight 405 · Forman -47,501,359
#3
Forman -44,840,857
1447379375 → 1528210119
Weight 401 · Forman -44,840,857
#4
Forman -44,142,869
1528210119 → 1760482194
Weight 988 · Forman -44,142,869
#5
Forman -41,536,939
1528210119 → 1831305150
Weight 912 · Forman -41,536,939
#6
Forman -39,630,574
1528210119 → 1962605345
Weight 834 · Forman -39,630,574
#7
Forman -38,675,493
1528210119 → 1699821892
Weight 697 · Forman -38,675,493
#8
Forman -37,333,007
1346240769 → 1750378253
Weight 341 · Forman -37,333,007
Strongest referral edges
#1
Weight 1,641
1811104540 → 1962420570
Weight 1,641 · Forman -3,922,918
#2
Weight 988
1528210119 → 1760482194
Weight 988 · Forman -44,142,869
#3
Weight 912
1528210119 → 1831305150
Weight 912 · Forman -41,536,939
#4
Weight 897
1447379375 → 1699821892
Weight 897 · Forman -32,666,773
#5
Weight 884
1346240769 → 1528210119
Weight 884 · Forman -67,707,678
#6
Weight 847
1346240769 → 1760482194
Weight 847 · Forman -31,019,150
#7
Weight 834
1528210119 → 1962605345
Weight 834 · Forman -39,630,574
#8
Weight 755
1346240769 → 1831305150
Weight 755 · Forman -28,490,127