Wake Forest Baptist Med Ctr · Referral network

HSA 34100 · 2015 · 1239 physicians · 8000 edges

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Data source · SQLite (fallback)
CMS ≥11 patient pairs
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

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Curvature distribution

Mean F
-8,059,009
Median F
-605,878
Min F
-505,906,005
Max F
363.7

From referral_network_features

Precomputed on the full thresholded network (all edges, Python toolkit, unit node weights).

Nodes
1,492
Edges
25,138
Avg clustering
0.669
Density
0.0226
Forman μ
-139.6
Forman σ
205.3

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
497,214
Avg degree
12.91
Max degree
560
Negative F edges
7,962
Positive F edges
38
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 1326023342
Degree 560 · weight 64,565
560
#2
NPI 1033194311
Degree 549 · weight 63,903
549
#3
NPI 1437134632
Degree 376 · weight 32,686
376
#4
NPI 1376663344
Degree 398 · weight 28,800
398
#5
NPI 1043281314
Degree 236 · weight 17,897
236
#6
NPI 1558348227
Degree 189 · weight 14,962
189
#7
NPI 1316995988
Degree 124 · weight 9,197
124
#8
NPI 1194700484
Degree 138 · weight 8,805
138

Most negative curvature

#1
Forman -505,906,005
1033194311 → 1326023342
Weight 2,867 · Forman -505,906,005
#2
Forman -286,113,551
1326023342 → 1437134632
Weight 1,850 · Forman -286,113,551
#3
Forman -283,934,451
1033194311 → 1437134632
Weight 1,910 · Forman -283,934,451
#4
Forman -198,591,679
1033194311 → 1558348227
Weight 1,522 · Forman -198,591,679
#5
Forman -186,926,332
1326023342 → 1558348227
Weight 1,270 · Forman -186,926,332
#6
Forman -156,131,233
1033194311 → 1730381989
Weight 1,097 · Forman -156,131,233
#7
Forman -154,704,189
1316995988 → 1326023342
Weight 961 · Forman -154,704,189
#8
Forman -153,739,941
1326023342 → 1730381989
Weight 997 · Forman -153,739,941

Strongest referral edges

#1
Weight 2,867
1033194311 → 1326023342
Weight 2,867 · Forman -505,906,005
#2
Weight 1,910
1033194311 → 1437134632
Weight 1,910 · Forman -283,934,451
#3
Weight 1,850
1326023342 → 1437134632
Weight 1,850 · Forman -286,113,551
#4
Weight 1,522
1033194311 → 1558348227
Weight 1,522 · Forman -198,591,679
#5
Weight 1,270
1326023342 → 1558348227
Weight 1,270 · Forman -186,926,332
#6
Weight 1,097
1033194311 → 1730381989
Weight 1,097 · Forman -156,131,233
#7
Weight 997
1326023342 → 1730381989
Weight 997 · Forman -153,739,941
#8
Weight 961
1316995988 → 1326023342
Weight 961 · Forman -154,704,189