Valley Hospital Medical Center · Referral network
HSA 29010 · 2014 · 1205 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
-3,138,577
Median F
-813,221
Min F
-68,752,801
Max F
346
From referral_network_features
Nodes
2,117
Edges
74,435
Avg clustering
0.564
Density
0.0332
Forman μ
-177.7
Forman σ
168.1
Rendered graph structure
Total weight
461,072
Avg degree
13.28
Max degree
521
Negative F edges
7,953
Positive F edges
47
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 521 · weight 37,787
521
#2
NPI 1063420065
Degree 337 · weight 23,349
337
#3
NPI 1649222167
Degree 266 · weight 19,681
266
#4
NPI 1548296403
Degree 212 · weight 18,621
212
#5
NPI 1942299284
Degree 287 · weight 17,024
287
#6
NPI 1457472490
Degree 146 · weight 12,498
146
#7
NPI 1699726240
Degree 200 · weight 11,970
200
#8
NPI 1952391963
Degree 158 · weight 11,513
158
Most negative curvature
#1
Forman -68,752,801
1063420065 → 1366540973
Weight 283 · Forman -68,752,801
#2
Forman -67,925,653
1366540973 → 1639168966
Weight 535 · Forman -67,925,653
#3
Forman -65,940,973
1366540973 → 1649222167
Weight 323 · Forman -65,940,973
#4
Forman -63,714,625
1366540973 → 1427047778
Weight 466 · Forman -63,714,625
#5
Forman -56,939,782
1366540973 → 1528017308
Weight 382 · Forman -56,939,782
#6
Forman -52,646,760
1306028014 → 1366540973
Weight 329 · Forman -52,646,760
#7
Forman -52,181,704
1366540973 → 1821088857
Weight 319 · Forman -52,181,704
#8
Forman -52,077,733
1164429932 → 1366540973
Weight 315 · Forman -52,077,733
Strongest referral edges
#1
Weight 932
1104860436 → 1548296403
Weight 932 · Forman -17,524,570
#2
Weight 729
1528017308 → 1649222167
Weight 729 · Forman -21,531,343
#3
Weight 712
1720056633 → 1952358426
Weight 712 · Forman -74,658
#4
Weight 696
1427153691 → 1629099379
Weight 696 · Forman -705,132
#5
Weight 652
1811919665 → 1942299284
Weight 652 · Forman -21,567,102
#6
Weight 623
1245249689 → 1518071208
Weight 623 · Forman -1,974,538
#7
Weight 604
1417904350 → 1508813585
Weight 604 · Forman -4,703,840
#8
Weight 578
1093766339 → 1104896463
Weight 578 · Forman -91,973