Novant Health Presbyterian Med Ctr · Referral network
HSA 34016 · 2014 · 1395 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
-1,798,732
Median F
-200,256
Min F
-79,653,693
Max F
728
From referral_network_features
Precomputed on the full thresholded network (all edges, Python toolkit, unit node weights).
Nodes
2,345
Edges
43,981
Avg clustering
0.591
Density
0.0160
Forman μ
-127.1
Forman σ
178
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
462,226
Avg degree
11.47
Max degree
439
Negative F edges
7,949
Positive F edges
51
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 294 · weight 34,323
294
#2
NPI 1932124476
Degree 439 · weight 22,770
439
#3
NPI 1184636532
Degree 213 · weight 19,908
213
#4
NPI 1003827296
Degree 184 · weight 18,506
184
#5
NPI 1760480735
Degree 154 · weight 15,364
154
#6
NPI 1619975752
Degree 150 · weight 14,809
150
#7
NPI 1457302754
Degree 150 · weight 14,173
150
#8
NPI 1265444384
Degree 185 · weight 11,868
185
Most negative curvature
#1
Forman -79,653,693
1316970858 → 1932124476
Weight 797 · Forman -79,653,693
#2
Forman -48,055,946
1184636532 → 1316970858
Weight 718 · Forman -48,055,946
#3
Forman -45,658,300
1184636532 → 1932124476
Weight 395 · Forman -45,658,300
#4
Forman -38,226,453
1265444384 → 1316970858
Weight 628 · Forman -38,226,453
#5
Forman -37,318,183
1003827296 → 1932124476
Weight 291 · Forman -37,318,183
#6
Forman -37,190,915
1003827296 → 1316970858
Weight 488 · Forman -37,190,915
#7
Forman -35,165,111
1003827296 → 1184636532
Weight 916 · Forman -35,165,111
#8
Forman -34,906,235
1316970858 → 1366553968
Weight 583 · Forman -34,906,235
Strongest referral edges
#1
Weight 1,259
1457302754 → 1619975752
Weight 1,259 · Forman -22,232,843
#2
Weight 1,160
1619975752 → 1760480735
Weight 1,160 · Forman -22,233,934
#3
Weight 1,155
1457302754 → 1760480735
Weight 1,155 · Forman -22,087,785
#4
Weight 1,102
1003827296 → 1568474351
Weight 1,102 · Forman -22,185,011
#5
Weight 980
1407854540 → 1457302754
Weight 980 · Forman -16,534,785
#6
Weight 943
1447230099 → 1508872995
Weight 943 · Forman -7,796,918
#7
Weight 930
1407854540 → 1619975752
Weight 930 · Forman -16,193,973
#8
Weight 916
1003827296 → 1184636532
Weight 916 · Forman -35,165,111