Novant Health Presbyterian Med Ctr · Referral network
HSA 34016 · 2016 · 1782 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
-1,294,417
Median F
-160,308
Min F
-51,393,107
Max F
340
From referral_network_features
Precomputed on the full thresholded network (all edges, Python toolkit, unit node weights).
Nodes
2,624
Edges
45,351
Avg clustering
0.575
Density
0.0132
Forman μ
-119.8
Forman σ
144
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
431,088
Avg degree
8.98
Max degree
456
Negative F edges
7,901
Positive F edges
99
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 1316970858
Degree 456 · weight 24,204
456
#2
NPI 1831199876
Degree 194 · weight 17,158
194
#3
NPI 1578706685
Degree 160 · weight 14,649
160
#4
NPI 1932124476
Degree 344 · weight 12,218
344
#5
NPI 1407854540
Degree 134 · weight 11,931
134
#6
NPI 1922041425
Degree 121 · weight 10,133
121
#7
NPI 1568474351
Degree 86 · weight 9,276
86
#8
NPI 1457464497
Degree 107 · weight 8,108
107
Most negative curvature
#1
Forman -51,393,107
1316970858 → 1932124476
Weight 383 · Forman -51,393,107
#2
Forman -33,983,187
1184636532 → 1316970858
Weight 340 · Forman -33,983,187
#3
Forman -32,462,086
1316970858 → 1366553968
Weight 311 · Forman -32,462,086
#4
Forman -30,355,830
1003827296 → 1316970858
Weight 264 · Forman -30,355,830
#5
Forman -28,643,297
1316970858 → 1588671440
Weight 244 · Forman -28,643,297
#6
Forman -26,530,875
1255383410 → 1316970858
Weight 193 · Forman -26,530,875
#7
Forman -25,813,849
1316970858 → 1588610802
Weight 188 · Forman -25,813,849
#8
Forman -25,771,671
1316970858 → 1326151424
Weight 200 · Forman -25,771,671
Strongest referral edges
#1
Weight 1,611
1114124716 → 1922041425
Weight 1,611 · Forman -9,556,894
#2
Weight 1,321
1003827296 → 1568474351
Weight 1,321 · Forman -6,241,520
#3
Weight 1,176
1003827296 → 1952375909
Weight 1,176 · Forman -3,935,377
#4
Weight 1,071
1568474351 → 1952375909
Weight 1,071 · Forman -5,990,652
#5
Weight 990
1255383410 → 1649386665
Weight 990 · Forman -4,704,638
#6
Weight 987
1588610802 → 1649386665
Weight 987 · Forman -3,847,639
#7
Weight 928
1407854540 → 1619975752
Weight 928 · Forman -8,106,991
#8
Weight 913
1255383410 → 1588610802
Weight 913 · Forman -4,851,080