Univ Of Minnesota Medical Ctr · Referral network
HSA 24076 · 2015 · 1790 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
-468,682
Median F
-98,548
Min F
-15,665,562
Max F
284
From referral_network_features
Precomputed on the full thresholded network (all edges, Python toolkit, unit node weights).
Nodes
2,934
Edges
29,190
Avg clustering
0.576
Density
0.0068
Forman μ
-50.9
Forman σ
69.7
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
388,705
Avg degree
8.94
Max degree
196
Negative F edges
7,888
Positive F edges
112
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 1285673947
Degree 196 · weight 12,793
196
#2
NPI 1790739381
Degree 194 · weight 11,617
194
#3
NPI 1386727873
Degree 159 · weight 10,773
159
#4
NPI 1053552505
Degree 176 · weight 10,391
176
#5
NPI 1043365976
Degree 174 · weight 9,764
174
#6
NPI 1144499187
Degree 135 · weight 9,181
135
#7
NPI 1174746200
Degree 150 · weight 9,096
150
#8
NPI 1902826449
Degree 133 · weight 8,622
133
Most negative curvature
#1
Forman -15,665,562
1285673947 → 1790739381
Weight 447 · Forman -15,665,562
#2
Forman -14,439,600
1053552505 → 1285673947
Weight 456 · Forman -14,439,600
#3
Forman -13,797,035
1053552505 → 1790739381
Weight 440 · Forman -13,797,035
#4
Forman -13,740,398
1043365976 → 1285673947
Weight 432 · Forman -13,740,398
#5
Forman -13,186,082
1043365976 → 1790739381
Weight 421 · Forman -13,186,082
#6
Forman -12,612,927
1174746200 → 1285673947
Weight 447 · Forman -12,612,927
#7
Forman -12,574,792
1144499187 → 1386727873
Weight 696 · Forman -12,574,792
#8
Forman -12,001,941
1386727873 → 1902826449
Weight 671 · Forman -12,001,941
Strongest referral edges
#1
Weight 740
1710972864 → 1932159894
Weight 740 · Forman -3,009,058
#2
Weight 717
1477569895 → 1710972864
Weight 717 · Forman -2,746,831
#3
Weight 696
1144499187 → 1386727873
Weight 696 · Forman -12,574,792
#4
Weight 671
1386727873 → 1902826449
Weight 671 · Forman -12,001,941
#5
Weight 665
1144499187 → 1902826449
Weight 665 · Forman -10,031,367
#6
Weight 654
1477569895 → 1932159894
Weight 654 · Forman -1,660,020
#7
Weight 528
1164505624 → 1386727873
Weight 528 · Forman -9,437,104
#8
Weight 516
1326150889 → 1558393157
Weight 516 · Forman -15,084