Unitypoint Hlth - Iowa Methodist · Referral network
HSA 16031 · 2017 · 968 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
-4,549,207
Median F
-898,611
Min F
-207,265,032
Max F
265
From referral_network_features
Precomputed on the full thresholded network (all edges, Python toolkit, unit node weights).
Nodes
1,335
Edges
35,858
Avg clustering
0.666
Density
0.0403
Forman μ
-112.6
Forman σ
152.7
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
512,186
Avg degree
16.53
Max degree
518
Negative F edges
7,973
Positive F edges
27
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 1376525196
Degree 518 · weight 61,469
518
#2
NPI 1386626109
Degree 300 · weight 27,264
300
#3
NPI 1578545307
Degree 229 · weight 27,181
229
#4
NPI 1689656605
Degree 194 · weight 20,682
194
#5
NPI 1386639060
Degree 204 · weight 17,617
204
#6
NPI 1396724167
Degree 272 · weight 17,577
272
#7
NPI 1760623144
Degree 95 · weight 16,951
95
#8
NPI 1932310018
Degree 186 · weight 16,361
186
Most negative curvature
#1
Forman -207,265,032
1376525196 → 1386626109
Weight 1,358 · Forman -207,265,032
#2
Forman -189,557,535
1376525196 → 1760623144
Weight 1,664 · Forman -189,557,535
#3
Forman -176,908,912
1376525196 → 1578545307
Weight 1,131 · Forman -176,908,912
#4
Forman -173,638,884
1376525196 → 1689656605
Weight 1,207 · Forman -173,638,884
#5
Forman -154,386,407
1376525196 → 1861601841
Weight 1,075 · Forman -154,386,407
#6
Forman -149,788,242
1376525196 → 1861473316
Weight 1,006 · Forman -149,788,242
#7
Forman -140,286,563
1376525196 → 1881676120
Weight 834 · Forman -140,286,563
#8
Forman -139,398,709
1376525196 → 1568444248
Weight 959 · Forman -139,398,709
Strongest referral edges
#1
Weight 1,664
1376525196 → 1760623144
Weight 1,664 · Forman -189,557,535
#2
Weight 1,358
1376525196 → 1386626109
Weight 1,358 · Forman -207,265,032
#3
Weight 1,207
1376525196 → 1689656605
Weight 1,207 · Forman -173,638,884
#4
Weight 1,131
1376525196 → 1578545307
Weight 1,131 · Forman -176,908,912
#5
Weight 1,075
1376525196 → 1861601841
Weight 1,075 · Forman -154,386,407
#6
Weight 1,050
1578545307 → 1760623144
Weight 1,050 · Forman -33,559,728
#7
Weight 1,030
1396724167 → 1457695595
Weight 1,030 · Forman -24,413,424
#8
Weight 1,006
1376525196 → 1861473316
Weight 1,006 · Forman -149,788,242