St. Luke's Hosp-Chesterfield · Referral network
HSA 26082 · 2015 · 2265 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
-2,478,222
Median F
-186,173
Min F
-116,433,968
Max F
300
From referral_network_features
Precomputed on the full thresholded network (all edges, Python toolkit, unit node weights).
Nodes
4,195
Edges
105,581
Avg clustering
0.634
Density
0.0120
Forman μ
-152.3
Forman σ
219.9
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
484,685
Avg degree
7.06
Max degree
475
Negative F edges
7,960
Positive F edges
40
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 1679590111
Degree 475 · weight 38,486
475
#2
NPI 1851318372
Degree 389 · weight 28,738
389
#3
NPI 1639162530
Degree 203 · weight 24,116
203
#4
NPI 1942209036
Degree 211 · weight 21,800
211
#5
NPI 1124164066
Degree 128 · weight 11,044
128
#6
NPI 1487864138
Degree 111 · weight 9,689
111
#7
NPI 1154327039
Degree 117 · weight 8,917
117
#8
NPI 1366469876
Degree 59 · weight 8,302
59
Most negative curvature
#1
Forman -116,433,968
1679590111 → 1851318372
Weight 702 · Forman -116,433,968
#2
Forman -101,391,613
1366469876 → 1679590111
Weight 1,380 · Forman -101,391,613
#3
Forman -81,691,755
1306877824 → 1679590111
Weight 924 · Forman -81,691,755
#4
Forman -77,270,876
1033135264 → 1679590111
Weight 830 · Forman -77,270,876
#5
Forman -74,509,900
1538187083 → 1679590111
Weight 764 · Forman -74,509,900
#6
Forman -69,523,575
1649298118 → 1679590111
Weight 669 · Forman -69,523,575
#7
Forman -60,510,426
1366469876 → 1851318372
Weight 1,146 · Forman -60,510,426
#8
Forman -58,868,481
1073530580 → 1679590111
Weight 481 · Forman -58,868,481
Strongest referral edges
#1
Weight 1,503
1497710651 → 1538123310
Weight 1,503 · Forman -1,685,159
#2
Weight 1,433
1639162530 → 1720071244
Weight 1,433 · Forman -25,661,613
#3
Weight 1,380
1366469876 → 1679590111
Weight 1,380 · Forman -101,391,613
#4
Weight 1,210
1932311974 → 1942209036
Weight 1,210 · Forman -22,873,100
#5
Weight 1,146
1366469876 → 1851318372
Weight 1,146 · Forman -60,510,426
#6
Weight 924
1306877824 → 1679590111
Weight 924 · Forman -81,691,755
#7
Weight 899
1336100650 → 1609875699
Weight 899 · Forman -2,755,306
#8
Weight 866
1225037252 → 1609875699
Weight 866 · Forman -2,679,116