Doctor’s fee or facility fee? These are doctors' (professional) fees only. If this is done in a hospital or surgery center, the facility bills its own fee on top — for the room, nurses and equipment — often larger than the doctor's. That fee is not included here.
Who is counted: BlueCross BlueShield of Tennessee lists clinicians individually: 98% of the 57,144 provider IDs (NPIs) it names are individual doctors, nurse practitioners and therapists; the rest are practices, clinics and hospitals. “Providers” counts those IDs. BlueCross BlueShield of Tennessee’s files name 49,393 providers for this procedure; 18,275 are counted here: the clinicians whose specialty performs it — mostly Nurse Practitioner, Physician Assistant and Internal Medicine — and the practices, clinics and hospitals. Insurers attach their whole fee schedule to every contracted provider, so the rest are clinicians listed at a price for something they never do; counting them would inflate the provider count and pull the typical price towards the fee schedule’s floor.
Not on this map: Care outside its home state: Blue Cross Blue Shield plans share one national network, BlueCard, for members treated in other states. Those prices are published centrally, not by BlueCross BlueShield of Tennessee, so they are not included here.
State
Providers
Named in files
Organisations
Zip codes
Lowest
25th pct
Median
75th pct
Highest
vs Medicare
“x Medicare” compares each price with what original Medicare pays for the same lab test under its clinical laboratory fee schedule (26CLABQ4, in force from 2026-10-01): one national price, the same in every state. Insurers write their contracts as a share of Medicare, so 1.3x means the insurer pays 30% more than Medicare would; Medicare Advantage plans generally pay close to 1.0x.
This is a statewide summary. Prices vary far more between towns and between practices than these medians suggest; zip-code and provider-level detail is not published here; this specific data can be requested here.