Zuckerberg San Francisco Generl Hos · Referral network
HSA 5208 · 2015 · 1211 physicians · 5304 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
-2,843,244
Median F
-88,622
Min F
-129,312,870
Max F
644
From referral_network_features
Precomputed on the full thresholded network (all edges, Python toolkit, unit node weights).
Nodes
1,681
Edges
14,799
Avg clustering
0.544
Density
0.0105
Forman μ
-79.5
Forman σ
163.2
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
268,957
Avg degree
8.76
Max degree
474
Negative F edges
5,227
Positive F edges
77
Nonzero F edges
5,304
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 1215994827
Degree 474 · weight 51,337
474
#2
NPI 1700835584
Degree 121 · weight 8,236
121
#3
NPI 1932110012
Degree 96 · weight 5,392
96
#4
NPI 1568473361
Degree 104 · weight 5,371
104
#5
NPI 1851483531
Degree 103 · weight 5,041
103
#6
NPI 1215970538
Degree 106 · weight 4,906
106
#7
NPI 1508940305
Degree 90 · weight 4,740
90
#8
NPI 1760431837
Degree 57 · weight 4,368
57
Most negative curvature
#1
Forman -129,312,870
1215994827 → 1700835584
Weight 1,399 · Forman -129,312,870
#2
Forman -102,969,159
1215994827 → 1760431837
Weight 955 · Forman -102,969,159
#3
Forman -100,704,684
1215994827 → 1497774798
Weight 918 · Forman -100,704,684
#4
Forman -98,636,986
1215994827 → 1619928892
Weight 886 · Forman -98,636,986
#5
Forman -96,706,305
1215994827 → 1558577106
Weight 847 · Forman -96,706,305
#6
Forman -95,859,870
1215994827 → 1609809649
Weight 835 · Forman -95,859,870
#7
Forman -95,461,759
1215994827 → 1376554030
Weight 816 · Forman -95,461,759
#8
Forman -93,968,165
1215994827 → 1760440465
Weight 799 · Forman -93,968,165
Strongest referral edges
#1
Weight 1,399
1215994827 → 1700835584
Weight 1,399 · Forman -129,312,870
#2
Weight 955
1215994827 → 1760431837
Weight 955 · Forman -102,969,159
#3
Weight 918
1215994827 → 1497774798
Weight 918 · Forman -100,704,684
#4
Weight 886
1215994827 → 1619928892
Weight 886 · Forman -98,636,986
#5
Weight 847
1215994827 → 1558577106
Weight 847 · Forman -96,706,305
#6
Weight 835
1215994827 → 1609809649
Weight 835 · Forman -95,859,870
#7
Weight 816
1215994827 → 1376554030
Weight 816 · Forman -95,461,759
#8
Weight 799
1215994827 → 1760440465
Weight 799 · Forman -93,968,165