Walnut Hill Medical Center · Referral network
HSA 45068 · 2014 · 2120 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
-1,711,446
Median F
-203,275
Min F
-83,015,177
Max F
537
From referral_network_features
Precomputed on the full thresholded network (all edges, Python toolkit, unit node weights).
Nodes
4,128
Edges
65,342
Avg clustering
0.584
Density
0.0077
Forman μ
-175.9
Forman σ
410.7
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
478,945
Avg degree
7.55
Max degree
359
Negative F edges
7,936
Positive F edges
64
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 1801863634
Degree 359 · weight 37,541
359
#2
NPI 1124082854
Degree 325 · weight 28,763
325
#3
NPI 1982813028
Degree 263 · weight 24,542
263
#4
NPI 1336107507
Degree 80 · weight 10,697
80
#5
NPI 1093739963
Degree 59 · weight 7,062
59
#6
NPI 1265443949
Degree 83 · weight 6,965
83
#7
NPI 1013981240
Degree 133 · weight 6,747
133
#8
NPI 1942340088
Degree 76 · weight 6,443
76
Most negative curvature
#1
Forman -83,015,177
1801863634 → 1982813028
Weight 882 · Forman -83,015,177
#2
Forman -73,115,676
1801863634 → 1891862975
Weight 1,418 · Forman -73,115,676
#3
Forman -69,499,328
1093739963 → 1801863634
Weight 1,272 · Forman -69,499,328
#4
Forman -47,408,837
1124082854 → 1356304083
Weight 1,161 · Forman -47,408,837
#5
Forman -43,063,076
1588612451 → 1801863634
Weight 516 · Forman -43,063,076
#6
Forman -41,230,661
1386618510 → 1801863634
Weight 474 · Forman -41,230,661
#7
Forman -40,465,154
1316107246 → 1801863634
Weight 456 · Forman -40,465,154
#8
Forman -39,806,366
1124082854 → 1811952633
Weight 828 · Forman -39,806,366
Strongest referral edges
#1
Weight 1,418
1801863634 → 1891862975
Weight 1,418 · Forman -73,115,676
#2
Weight 1,384
1093764169 → 1366499220
Weight 1,384 · Forman -648,223
#3
Weight 1,272
1093739963 → 1801863634
Weight 1,272 · Forman -69,499,328
#4
Weight 1,161
1124082854 → 1356304083
Weight 1,161 · Forman -47,408,837
#5
Weight 1,065
1336107507 → 1386805331
Weight 1,065 · Forman -3,682,812
#6
Weight 937
1376514208 → 1942340088
Weight 937 · Forman -2,307,858
#7
Weight 888
1225309966 → 1396745311
Weight 888 · Forman -288,490
#8
Weight 882
1801863634 → 1982813028
Weight 882 · Forman -83,015,177