Novant Health Presbyterian Med Ctr · Referral network
HSA 34016 · 2015 · 1489 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
-1,494,683
Median F
-151,654
Min F
-71,896,735
Max F
286
From referral_network_features
Precomputed on the full thresholded network (all edges, Python toolkit, unit node weights).
Nodes
2,479
Edges
47,296
Avg clustering
0.584
Density
0.0154
Forman μ
-128
Forman σ
181.1
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
437,486
Avg degree
10.75
Max degree
447
Negative F edges
7,943
Positive F edges
57
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 303 · weight 32,133
303
#2
NPI 1184636532
Degree 230 · weight 21,047
230
#3
NPI 1932124476
Degree 447 · weight 19,604
447
#4
NPI 1003827296
Degree 152 · weight 16,650
152
#5
NPI 1841298239
Degree 137 · weight 12,472
137
#6
NPI 1891793121
Degree 130 · weight 11,149
130
#7
NPI 1568474351
Degree 83 · weight 10,001
83
#8
NPI 1740288059
Degree 119 · weight 8,997
119
Most negative curvature
#1
Forman -71,896,735
1316970858 → 1932124476
Weight 688 · Forman -71,896,735
#2
Forman -54,310,675
1184636532 → 1316970858
Weight 794 · Forman -54,310,675
#3
Forman -42,136,248
1184636532 → 1932124476
Weight 334 · Forman -42,136,248
#4
Forman -33,417,330
1003827296 → 1316970858
Weight 466 · Forman -33,417,330
#5
Forman -33,266,025
1003827296 → 1184636532
Weight 890 · Forman -33,266,025
#6
Forman -27,042,492
1265444384 → 1316970858
Weight 414 · Forman -27,042,492
#7
Forman -25,404,418
1003827296 → 1932124476
Weight 174 · Forman -25,404,418
#8
Forman -25,241,219
1316970858 → 1326151424
Weight 384 · Forman -25,241,219
Strongest referral edges
#1
Weight 1,114
1003827296 → 1568474351
Weight 1,114 · Forman -16,213,937
#2
Weight 1,099
1003827296 → 1598989196
Weight 1,099 · Forman -14,148,757
#3
Weight 1,076
1003827296 → 1750494753
Weight 1,076 · Forman -14,580,555
#4
Weight 1,018
1003827296 → 1952375909
Weight 1,018 · Forman -13,796,754
#5
Weight 924
1598989196 → 1750494753
Weight 924 · Forman -4,081,130
#6
Weight 917
1568474351 → 1598989196
Weight 917 · Forman -5,314,766
#7
Weight 890
1003827296 → 1184636532
Weight 890 · Forman -33,266,025
#8
Weight 886
1750494753 → 1952375909
Weight 886 · Forman -4,164,782