Virginia Mason Medical Center · Referral network
HSA 50054 · 2017 · 1835 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
-1,087,164
Median F
-131,894
Min F
-53,669,641
Max F
614
From referral_network_features
Precomputed on the full thresholded network (all edges, Python toolkit, unit node weights).
Nodes
3,127
Edges
31,161
Avg clustering
0.577
Density
0.0064
Forman μ
-83.5
Forman σ
111.7
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
444,602
Avg degree
8.72
Max degree
237
Negative F edges
7,883
Positive F edges
117
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 1407902083
Degree 237 · weight 25,658
237
#2
NPI 1508838467
Degree 235 · weight 24,950
235
#3
NPI 1205808896
Degree 191 · weight 18,205
191
#4
NPI 1154351716
Degree 201 · weight 17,548
201
#5
NPI 1396835252
Degree 210 · weight 16,822
210
#6
NPI 1518939420
Degree 202 · weight 15,963
202
#7
NPI 1356314181
Degree 99 · weight 11,720
99
#8
NPI 1720075294
Degree 71 · weight 10,941
71
Most negative curvature
#1
Forman -53,669,641
1407902083 → 1508838467
Weight 1,179 · Forman -53,669,641
#2
Forman -41,875,980
1205808896 → 1508838467
Weight 1,123 · Forman -41,875,980
#3
Forman -39,625,559
1407902083 → 1518939420
Weight 956 · Forman -39,625,559
#4
Forman -39,523,087
1508838467 → 1518939420
Weight 992 · Forman -39,523,087
#5
Forman -38,769,601
1205808896 → 1407902083
Weight 923 · Forman -38,769,601
#6
Forman -38,685,873
1154351716 → 1407902083
Weight 906 · Forman -38,685,873
#7
Forman -38,005,601
1154351716 → 1508838467
Weight 912 · Forman -38,005,601
#8
Forman -33,084,418
1356314181 → 1508838467
Weight 1,280 · Forman -33,084,418
Strongest referral edges
#1
Weight 1,280
1356314181 → 1508838467
Weight 1,280 · Forman -33,084,418
#2
Weight 1,179
1407902083 → 1508838467
Weight 1,179 · Forman -53,669,641
#3
Weight 1,170
1356314181 → 1407902083
Weight 1,170 · Forman -32,543,543
#4
Weight 1,123
1205808896 → 1508838467
Weight 1,123 · Forman -41,875,980
#5
Weight 992
1508838467 → 1518939420
Weight 992 · Forman -39,523,087
#6
Weight 956
1407902083 → 1518939420
Weight 956 · Forman -39,625,559
#7
Weight 923
1205808896 → 1407902083
Weight 923 · Forman -38,769,601
#8
Weight 914
1154351716 → 1356314181
Weight 914 · Forman -19,559,789