Swedish Medical Center · Referral network
HSA 6016 · 2017 · 1703 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
-482,340
Median F
-98,539
Min F
-25,143,955
Max F
614
From referral_network_features
Precomputed on the full thresholded network (all edges, Python toolkit, unit node weights).
Nodes
2,762
Edges
31,785
Avg clustering
0.546
Density
0.0083
Forman μ
-78.5
Forman σ
97.3
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
431,436
Avg degree
9.40
Max degree
192
Negative F edges
7,879
Positive F edges
121
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 1134135346
Degree 192 · weight 20,678
192
#2
NPI 1437165784
Degree 138 · weight 13,757
138
#3
NPI 1336231273
Degree 148 · weight 13,135
148
#4
NPI 1366461113
Degree 173 · weight 12,325
173
#5
NPI 1033175773
Degree 142 · weight 10,237
142
#6
NPI 1881919660
Degree 103 · weight 9,141
103
#7
NPI 1548256936
Degree 96 · weight 8,417
96
#8
NPI 1548258726
Degree 102 · weight 7,456
102
Most negative curvature
#1
Forman -25,143,955
1134135346 → 1437165784
Weight 827 · Forman -25,143,955
#2
Forman -24,942,908
1134135346 → 1336231273
Weight 795 · Forman -24,942,908
#3
Forman -20,230,473
1134135346 → 1366461113
Weight 475 · Forman -20,230,473
#4
Forman -19,716,180
1134135346 → 1881919660
Weight 719 · Forman -19,716,180
#5
Forman -16,451,887
1114944030 → 1134135346
Weight 633 · Forman -16,451,887
#6
Forman -15,892,361
1134135346 → 1316951759
Weight 626 · Forman -15,892,361
#7
Forman -15,696,628
1134135346 → 1194731455
Weight 552 · Forman -15,696,628
#8
Forman -14,657,053
1134135346 → 1548258726
Weight 433 · Forman -14,657,053
Strongest referral edges
#1
Weight 827
1134135346 → 1437165784
Weight 827 · Forman -25,143,955
#2
Weight 795
1134135346 → 1336231273
Weight 795 · Forman -24,942,908
#3
Weight 719
1134135346 → 1881919660
Weight 719 · Forman -19,716,180
#4
Weight 680
1336231273 → 1881919660
Weight 680 · Forman -11,758,030
#5
Weight 633
1114944030 → 1134135346
Weight 633 · Forman -16,451,887
#6
Weight 632
1437165784 → 1881919660
Weight 632 · Forman -11,073,755
#7
Weight 626
1134135346 → 1316951759
Weight 626 · Forman -15,892,361
#8
Weight 587
1336231273 → 1437165784
Weight 587 · Forman -14,285,138