Veterans Home And Hospital · Referral network
HSA 7007 · 2015 · 1150 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
-2,494,868
Median F
-648,375
Min F
-73,658,636
Max F
288
From referral_network_features
Precomputed on the full thresholded network (all edges, Python toolkit, unit node weights).
Nodes
1,804
Edges
50,461
Avg clustering
0.661
Density
0.0310
Forman μ
-131.8
Forman σ
191.2
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
481,316
Avg degree
13.91
Max degree
335
Negative F edges
7,968
Positive F edges
32
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 335 · weight 32,926
335
#2
NPI 1447379375
Degree 293 · weight 30,458
293
#3
NPI 1528210119
Degree 309 · weight 30,430
309
#4
NPI 1346240769
Degree 263 · weight 25,211
263
#5
NPI 1114915766
Degree 236 · weight 18,550
236
#6
NPI 1255334207
Degree 183 · weight 14,634
183
#7
NPI 1710974738
Degree 108 · weight 14,566
108
#8
NPI 1790943686
Degree 192 · weight 13,478
192
Most negative curvature
#1
Forman -73,658,636
1083614531 → 1528210119
Weight 667 · Forman -73,658,636
#2
Forman -63,813,534
1346240769 → 1528210119
Weight 809 · Forman -63,813,534
#3
Forman -60,925,275
1083614531 → 1447379375
Weight 492 · Forman -60,925,275
#4
Forman -59,431,646
1083614531 → 1346240769
Weight 585 · Forman -59,431,646
#5
Forman -54,781,656
1447379375 → 1528210119
Weight 468 · Forman -54,781,656
#6
Forman -51,561,432
1083614531 → 1710974738
Weight 878 · Forman -51,561,432
#7
Forman -46,700,896
1083614531 → 1699821892
Weight 759 · Forman -46,700,896
#8
Forman -42,718,858
1447379375 → 1699821892
Weight 963 · Forman -42,718,858
Strongest referral edges
#1
Weight 963
1447379375 → 1699821892
Weight 963 · Forman -42,718,858
#2
Weight 910
1447379375 → 1700876125
Weight 910 · Forman -39,758,434
#3
Weight 878
1083614531 → 1710974738
Weight 878 · Forman -51,561,432
#4
Weight 844
1528210119 → 1962605345
Weight 844 · Forman -40,362,598
#5
Weight 832
1346240769 → 1962605345
Weight 832 · Forman -28,691,654
#6
Weight 822
1528210119 → 1760482194
Weight 822 · Forman -39,376,821
#7
Weight 809
1346240769 → 1528210119
Weight 809 · Forman -63,813,534
#8
Weight 809
1447379375 → 1710974738
Weight 809 · Forman -40,419,832