Us Pub Hlth Svc Indian-Sells · Referral network
HSA 3032 · 2015 · 1288 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
-546,362
Median F
-207,883
Min F
-24,217,299
Max F
330
From referral_network_features
Precomputed on the full thresholded network (all edges, Python toolkit, unit node weights).
Nodes
1,847
Edges
33,440
Avg clustering
0.558
Density
0.0196
Forman μ
-103.1
Forman σ
138.1
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
405,872
Avg degree
12.42
Max degree
237
Negative F edges
7,923
Positive F edges
77
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 1487632659
Degree 237 · weight 23,203
237
#2
NPI 1427079987
Degree 161 · weight 8,280
161
#3
NPI 1528046794
Degree 126 · weight 8,069
126
#4
NPI 1679551485
Degree 139 · weight 8,065
139
#5
NPI 1114923687
Degree 112 · weight 7,682
112
#6
NPI 1649315813
Degree 90 · weight 7,273
90
#7
NPI 1467458919
Degree 108 · weight 7,185
108
#8
NPI 1154328466
Degree 101 · weight 7,153
101
Most negative curvature
#1
Forman -24,217,299
1487632659 → 1528046794
Weight 648 · Forman -24,217,299
#2
Forman -19,932,149
1154328466 → 1487632659
Weight 492 · Forman -19,932,149
#3
Forman -19,461,457
1487632659 → 1548248057
Weight 544 · Forman -19,461,457
#4
Forman -19,215,202
1487632659 → 1497712996
Weight 475 · Forman -19,215,202
#5
Forman -19,143,488
1427079987 → 1487632659
Weight 363 · Forman -19,143,488
#6
Forman -18,966,586
1427148386 → 1487632659
Weight 481 · Forman -18,966,586
#7
Forman -18,185,616
1487632659 → 1679551295
Weight 490 · Forman -18,185,616
#8
Forman -18,183,571
1487632659 → 1881827814
Weight 468 · Forman -18,183,571
Strongest referral edges
#1
Weight 1,076
1063476042 → 1215931050
Weight 1,076 · Forman -571,841
#2
Weight 968
1235104951 → 1477578383
Weight 968 · Forman -2,419,089
#3
Weight 811
1154421287 → 1790780880
Weight 811 · Forman -166,337
#4
Weight 648
1487632659 → 1528046794
Weight 648 · Forman -24,217,299
#5
Weight 602
1427079987 → 1609895218
Weight 602 · Forman -5,586,132
#6
Weight 563
1467458919 → 1902804974
Weight 563 · Forman -3,620,424
#7
Weight 550
1114923687 → 1467458919
Weight 550 · Forman -6,042,156
#8
Weight 549
1114923687 → 1902804974
Weight 549 · Forman -3,841,840