Veterans Home And Hospital · Referral network
HSA 7007 · 2016 · 1156 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
-2,313,424
Median F
-649,037
Min F
-71,364,274
Max F
476
From referral_network_features
Precomputed on the full thresholded network (all edges, Python toolkit, unit node weights).
Nodes
1,842
Edges
49,769
Avg clustering
0.644
Density
0.0294
Forman μ
-117.4
Forman σ
172.5
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
475,713
Avg degree
13.84
Max degree
345
Negative F edges
7,961
Positive F edges
39
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 1083614531
Degree 345 · weight 35,903
345
#2
NPI 1346240769
Degree 278 · weight 27,515
278
#3
NPI 1528210119
Degree 275 · weight 27,502
275
#4
NPI 1447379375
Degree 237 · weight 22,257
237
#5
NPI 1114915766
Degree 236 · weight 19,658
236
#6
NPI 1255334207
Degree 192 · weight 13,345
192
#7
NPI 1790943686
Degree 198 · weight 13,070
198
#8
NPI 1699821892
Degree 100 · weight 12,668
100
Most negative curvature
#1
Forman -71,364,274
1083614531 → 1346240769
Weight 674 · Forman -71,364,274
#2
Forman -69,905,824
1083614531 → 1528210119
Weight 660 · Forman -69,905,824
#3
Forman -60,133,246
1346240769 → 1528210119
Weight 825 · Forman -60,133,246
#4
Forman -53,992,799
1083614531 → 1699821892
Weight 846 · Forman -53,992,799
#5
Forman -48,556,564
1083614531 → 1447379375
Weight 401 · Forman -48,556,564
#6
Forman -48,059,226
1083614531 → 1962605345
Weight 750 · Forman -48,059,226
#7
Forman -46,666,295
1083614531 → 1710974738
Weight 674 · Forman -46,666,295
#8
Forman -46,094,904
1083614531 → 1831305150
Weight 696 · Forman -46,094,904
Strongest referral edges
#1
Weight 912
1811104540 → 1962420570
Weight 912 · Forman -1,053,202
#2
Weight 846
1083614531 → 1699821892
Weight 846 · Forman -53,992,799
#3
Weight 838
1528210119 → 1962605345
Weight 838 · Forman -31,822,634
#4
Weight 827
1447379375 → 1699821892
Weight 827 · Forman -26,039,438
#5
Weight 826
1255490348 → 1518964592
Weight 826 · Forman -6,882,271
#6
Weight 825
1346240769 → 1528210119
Weight 825 · Forman -60,133,246
#7
Weight 813
1528210119 → 1831305150
Weight 813 · Forman -31,128,503
#8
Weight 811
1346240769 → 1962605345
Weight 811 · Forman -32,093,964