West Chester Hospital · Referral network
HSA 36023 · 2017 · 1635 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
-667,870
Median F
-178,965
Min F
-30,211,828
Max F
1,022
From referral_network_features
Precomputed on the full thresholded network (all edges, Python toolkit, unit node weights).
Nodes
2,720
Edges
56,031
Avg clustering
0.602
Density
0.0152
Forman μ
-161.6
Forman σ
190
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
452,577
Avg degree
9.79
Max degree
242
Negative F edges
7,937
Positive F edges
63
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 1518921444
Degree 242 · weight 20,059
242
#2
NPI 1851353064
Degree 177 · weight 14,518
177
#3
NPI 1174513733
Degree 147 · weight 14,410
147
#4
NPI 1922098342
Degree 183 · weight 13,544
183
#5
NPI 1184689705
Degree 127 · weight 12,779
127
#6
NPI 1619976370
Degree 107 · weight 9,763
107
#7
NPI 1376542936
Degree 105 · weight 9,354
105
#8
NPI 1841594496
Degree 138 · weight 9,022
138
Most negative curvature
#1
Forman -30,211,828
1184689705 → 1518921444
Weight 1,003 · Forman -30,211,828
#2
Forman -25,027,847
1518921444 → 1720065766
Weight 870 · Forman -25,027,847
#3
Forman -23,256,600
1518921444 → 1700877867
Weight 759 · Forman -23,256,600
#4
Forman -16,985,840
1376528919 → 1518921444
Weight 515 · Forman -16,985,840
#5
Forman -16,921,797
1366449621 → 1518921444
Weight 506 · Forman -16,921,797
#6
Forman -16,849,999
1013989318 → 1518921444
Weight 513 · Forman -16,849,999
#7
Forman -15,479,599
1518921444 → 1770574832
Weight 435 · Forman -15,479,599
#8
Forman -14,795,757
1184689705 → 1922098342
Weight 615 · Forman -14,795,757
Strongest referral edges
#1
Weight 1,003
1184689705 → 1518921444
Weight 1,003 · Forman -30,211,828
#2
Weight 887
1225466238 → 1952384505
Weight 887 · Forman -338,868
#3
Weight 870
1518921444 → 1720065766
Weight 870 · Forman -25,027,847
#4
Weight 759
1518921444 → 1700877867
Weight 759 · Forman -23,256,600
#5
Weight 691
1033323381 → 1184758799
Weight 691 · Forman -4,523,212
#6
Weight 686
1376542936 → 1750586483
Weight 686 · Forman -4,303,096
#7
Weight 683
1437544327 → 1851409122
Weight 683 · Forman -21,142
#8
Weight 675
1720085459 → 1851409122
Weight 675 · Forman -21,402