Nyu Langone Medical Center · Referral network
HSA 33080 · 2017 · 2912 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
-1,096,165
Median F
-127,311
Min F
-38,182,441
Max F
1,296
From referral_network_features
Precomputed on the full thresholded network (all edges, Python toolkit, unit node weights).
Nodes
7,139
Edges
72,183
Avg clustering
0.535
Density
0.0028
Forman μ
-175.2
Forman σ
290
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
457,386
Avg degree
5.49
Max degree
327
Negative F edges
7,843
Positive F edges
157
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 1801815253
Degree 327 · weight 23,035
327
#2
NPI 1275621542
Degree 151 · weight 22,497
151
#3
NPI 1861650608
Degree 197 · weight 15,720
197
#4
NPI 1518142306
Degree 240 · weight 15,678
240
#5
NPI 1578600177
Degree 228 · weight 14,135
228
#6
NPI 1144259433
Degree 154 · weight 14,079
154
#7
NPI 1194833459
Degree 113 · weight 12,471
113
#8
NPI 1326133737
Degree 78 · weight 12,183
78
Most negative curvature
#1
Forman -38,182,441
1174594956 → 1801815253
Weight 972 · Forman -38,182,441
#2
Forman -38,009,218
1073521696 → 1801815253
Weight 956 · Forman -38,009,218
#3
Forman -37,920,976
1316918824 → 1801815253
Weight 965 · Forman -37,920,976
#4
Forman -37,251,548
1063623775 → 1801815253
Weight 928 · Forman -37,251,548
#5
Forman -33,029,092
1518938018 → 1801815253
Weight 758 · Forman -33,029,092
#6
Forman -32,104,970
1801815253 → 1851362776
Weight 521 · Forman -32,104,970
#7
Forman -30,191,225
1326019381 → 1801815253
Weight 638 · Forman -30,191,225
#8
Forman -30,100,675
1043418833 → 1801815253
Weight 631 · Forman -30,100,675
Strongest referral edges
#1
Weight 1,268
1144259433 → 1326133737
Weight 1,268 · Forman -16,047,533
#2
Weight 1,213
1194833459 → 1518142306
Weight 1,213 · Forman -28,260,958
#3
Weight 1,104
1083672463 → 1326133737
Weight 1,104 · Forman -10,047,659
#4
Weight 1,074
1326133737 → 1861650608
Weight 1,074 · Forman -19,999,487
#5
Weight 1,065
1275621542 → 1730348780
Weight 1,065 · Forman -14,914,496
#6
Weight 1,025
1275621542 → 1699709725
Weight 1,025 · Forman -14,635,663
#7
Weight 1,023
1194833459 → 1578600177
Weight 1,023 · Forman -22,943,188
#8
Weight 998
1154580785 → 1275621542
Weight 998 · Forman -14,285,537