United Medical Center · Referral network
HSA 9001 · 2017 · 1369 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
-589,310
Median F
-114,669
Min F
-19,505,015
Max F
556.9
From referral_network_features
Precomputed on the full thresholded network (all edges, Python toolkit, unit node weights).
Nodes
2,022
Edges
30,070
Avg clustering
0.554
Density
0.0147
Forman μ
-72.4
Forman σ
88.1
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
391,968
Avg degree
11.69
Max degree
237
Negative F edges
7,934
Positive F edges
66
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 1598719981
Degree 221 · weight 15,490
221
#2
NPI 1184760662
Degree 177 · weight 14,506
177
#3
NPI 1699901769
Degree 208 · weight 12,801
208
#4
NPI 1417994716
Degree 237 · weight 12,695
237
#5
NPI 1326039587
Degree 118 · weight 9,939
118
#6
NPI 1821027475
Degree 167 · weight 9,363
167
#7
NPI 1588806822
Degree 148 · weight 8,324
148
#8
NPI 1467401182
Degree 86 · weight 6,569
86
Most negative curvature
#1
Forman -19,505,015
1184760662 → 1699901769
Weight 616 · Forman -19,505,015
#2
Forman -19,288,314
1417994716 → 1598719981
Weight 351 · Forman -19,288,314
#3
Forman -15,290,943
1417994716 → 1699901769
Weight 276 · Forman -15,290,943
#4
Forman -15,193,684
1598719981 → 1821027475
Weight 370 · Forman -15,193,684
#5
Forman -14,060,752
1255381778 → 1598719981
Weight 674 · Forman -14,060,752
#6
Forman -13,730,862
1598719981 → 1699901769
Weight 208 · Forman -13,730,862
#7
Forman -13,698,255
1417994716 → 1821027475
Weight 327 · Forman -13,698,255
#8
Forman -13,164,090
1588806822 → 1598719981
Weight 325 · Forman -13,164,090
Strongest referral edges
#1
Weight 970
1962478578 → 1972578748
Weight 970 · Forman -1,153,927
#2
Weight 760
1457550444 → 1497861025
Weight 760 · Forman -90,367
#3
Weight 674
1164419081 → 1649267519
Weight 674 · Forman -79,928
#4
Weight 674
1255381778 → 1598719981
Weight 674 · Forman -14,060,752
#5
Weight 623
1326039587 → 1679515548
Weight 623 · Forman -4,629,667
#6
Weight 616
1184760662 → 1699901769
Weight 616 · Forman -19,505,015
#7
Weight 616
1417104662 → 1649267519
Weight 616 · Forman -44,073
#8
Weight 614
1174613327 → 1568909570
Weight 614 · Forman -11,494