Us Pub Hlth Svc Indian-Sells · Referral network
HSA 3032 · 2014 · 1253 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
-545,079
Median F
-216,913
Min F
-22,113,062
Max F
528
From referral_network_features
Precomputed on the full thresholded network (all edges, Python toolkit, unit node weights).
Nodes
1,865
Edges
32,281
Avg clustering
0.542
Density
0.0186
Forman μ
-102.4
Forman σ
132.8
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
402,976
Avg degree
12.77
Max degree
234
Negative F edges
7,940
Positive F edges
60
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 234 · weight 24,171
234
#2
NPI 1427079987
Degree 150 · weight 7,913
150
#3
NPI 1649315813
Degree 93 · weight 7,545
93
#4
NPI 1265404446
Degree 122 · weight 7,332
122
#5
NPI 1114923687
Degree 105 · weight 7,128
105
#6
NPI 1679551485
Degree 128 · weight 6,821
128
#7
NPI 1467458919
Degree 100 · weight 6,706
100
#8
NPI 1861584856
Degree 86 · weight 6,667
86
Most negative curvature
#1
Forman -22,113,062
1487632659 → 1528046794
Weight 632 · Forman -22,113,062
#2
Forman -21,110,899
1427079987 → 1487632659
Weight 459 · Forman -21,110,899
#3
Forman -20,385,031
1487632659 → 1861584856
Weight 540 · Forman -20,385,031
#4
Forman -19,826,401
1215147103 → 1487632659
Weight 496 · Forman -19,826,401
#5
Forman -18,912,922
1487632659 → 1861569246
Weight 483 · Forman -18,912,922
#6
Forman -18,824,132
1154328466 → 1487632659
Weight 461 · Forman -18,824,132
#7
Forman -18,778,242
1487632659 → 1558334300
Weight 483 · Forman -18,778,242
#8
Forman -18,692,748
1427148386 → 1487632659
Weight 486 · Forman -18,692,748
Strongest referral edges
#1
Weight 1,068
1215931050 → 1902135858
Weight 1,068 · Forman -517,724
#2
Weight 842
1235104951 → 1477578383
Weight 842 · Forman -1,328,823
#3
Weight 693
1154421287 → 1790780880
Weight 693 · Forman -194,922
#4
Weight 644
1962451377 → 1962472506
Weight 644 · Forman -782,974
#5
Weight 632
1487632659 → 1528046794
Weight 632 · Forman -22,113,062
#6
Weight 624
1427079987 → 1609895218
Weight 624 · Forman -4,949,921
#7
Weight 540
1487632659 → 1861584856
Weight 540 · Forman -20,385,031
#8
Weight 539
1144345810 → 1700882651
Weight 539 · Forman -2,365,315