Us Pub Hlth Svc Indian-Sells · Referral network
HSA 3032 · 2017 · 1324 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
-803,669
Median F
-214,828
Min F
-35,137,537
Max F
507.4
From referral_network_features
Precomputed on the full thresholded network (all edges, Python toolkit, unit node weights).
Nodes
1,993
Edges
36,925
Avg clustering
0.558
Density
0.0186
Forman μ
-125.2
Forman σ
172.9
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
413,071
Avg degree
12.08
Max degree
279
Negative F edges
7,937
Positive F edges
63
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 279 · weight 30,604
279
#2
NPI 1679788418
Degree 155 · weight 10,294
155
#3
NPI 1427079987
Degree 165 · weight 9,596
165
#4
NPI 1679551485
Degree 145 · weight 8,719
145
#5
NPI 1154328466
Degree 115 · weight 8,453
115
#6
NPI 1861584856
Degree 107 · weight 8,253
107
#7
NPI 1558334300
Degree 112 · weight 8,175
112
#8
NPI 1730406596
Degree 108 · weight 7,677
108
Most negative curvature
#1
Forman -35,137,537
1487632659 → 1861584856
Weight 724 · Forman -35,137,537
#2
Forman -34,052,128
1487632659 → 1558334300
Weight 671 · Forman -34,052,128
#3
Forman -33,163,608
1255359238 → 1487632659
Weight 655 · Forman -33,163,608
#4
Forman -32,831,900
1154328466 → 1487632659
Weight 610 · Forman -32,831,900
#5
Forman -32,641,716
1487632659 → 1548248057
Weight 680 · Forman -32,641,716
#6
Forman -32,376,970
1184712689 → 1487632659
Weight 635 · Forman -32,376,970
#7
Forman -32,343,533
1487632659 → 1740268440
Weight 610 · Forman -32,343,533
#8
Forman -31,149,354
1487632659 → 1700889607
Weight 538 · Forman -31,149,354
Strongest referral edges
#1
Weight 1,597
1386603652 → 1730406596
Weight 1,597 · Forman -9,253,733
#2
Weight 1,548
1427079987 → 1972542108
Weight 1,548 · Forman -10,799,616
#3
Weight 943
1508857095 → 1730160573
Weight 943 · Forman -489,443
#4
Weight 724
1487632659 → 1861584856
Weight 724 · Forman -35,137,537
#5
Weight 681
1558330365 → 1730406596
Weight 681 · Forman -3,731,224
#6
Weight 680
1487632659 → 1548248057
Weight 680 · Forman -32,641,716
#7
Weight 678
1215924840 → 1952374464
Weight 678 · Forman -603,327
#8
Weight 671
1487632659 → 1558334300
Weight 671 · Forman -34,052,128