Valley Hospital Medical Center · Referral network
HSA 29010 · 2016 · 1256 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
-3,428,477
Median F
-899,426
Min F
-69,336,215
Max F
816.9
From referral_network_features
Nodes
2,397
Edges
86,169
Avg clustering
0.568
Density
0.0300
Forman μ
-183.6
Forman σ
175.8
Rendered graph structure
Total weight
476,444
Avg degree
12.74
Max degree
478
Negative F edges
7,966
Positive F edges
34
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 1366540973
Degree 478 · weight 34,396
478
#2
NPI 1063420065
Degree 423 · weight 26,812
423
#3
NPI 1649222167
Degree 299 · weight 24,611
299
#4
NPI 1942299284
Degree 344 · weight 19,494
344
#5
NPI 1952391963
Degree 231 · weight 15,235
231
#6
NPI 1023132511
Degree 204 · weight 13,876
204
#7
NPI 1962467845
Degree 257 · weight 13,588
257
#8
NPI 1922056589
Degree 155 · weight 12,584
155
Most negative curvature
#1
Forman -69,336,215
1063420065 → 1366540973
Weight 280 · Forman -69,336,215
#2
Forman -62,062,974
1366540973 → 1649222167
Weight 314 · Forman -62,062,974
#3
Forman -53,483,427
1366540973 → 1427047778
Weight 460 · Forman -53,483,427
#4
Forman -52,519,166
1366540973 → 1639168966
Weight 449 · Forman -52,519,166
#5
Forman -46,742,149
1306028014 → 1366540973
Weight 367 · Forman -46,742,149
#6
Forman -45,738,725
1366540973 → 1528017308
Weight 347 · Forman -45,738,725
#7
Forman -38,530,736
1366540973 → 1942299284
Weight 120 · Forman -38,530,736
#8
Forman -38,283,269
1053632992 → 1366540973
Weight 247 · Forman -38,283,269
Strongest referral edges
#1
Weight 966
1437188513 → 1528059672
Weight 966 · Forman -4,203
#2
Weight 909
1023132511 → 1164502225
Weight 909 · Forman -14,288,434
#3
Weight 860
1477637023 → 1528439460
Weight 860 · Forman -11,148,099
#4
Weight 828
1033576814 → 1477637023
Weight 828 · Forman -4,005,238
#5
Weight 809
1528017308 → 1649222167
Weight 809 · Forman -31,042,168
#6
Weight 795
1073618138 → 1407263106
Weight 795 · Forman -7,350,636
#7
Weight 729
1023132511 → 1184630469
Weight 729 · Forman -13,428,946
#8
Weight 689
1467535070 → 1528439460
Weight 689 · Forman -9,416,574