Northwestern Lake Forest Hospital DBA Northwestern Medicine Catherine Gratz Griffin Lake Forest Hospital

One file, 2 locations. These prices come from a file that covers 2 locations — Northwestern Medicine Catherine Gratz Griffin Lake Forest Hospital and Northwestern Medicine Grayslake — and the file does not say which of them any price belongs to. Every figure here is that whole file's rather than this one address's. The file's own header names it "Northwestern Lake Forest Hospital".

The facilities this file names, exactly as it names them: Northwestern Medicine Catherine Gratz Griffin Lake Forest Hospital · Northwestern Medicine Grayslake.

Northwestern Lake Forest Hospital DBA Northwestern Medicine Catherine Gratz Griffin Lake Forest Hospital publishes no Humana rate for Kidney function test. We could put one of the 38 rates below in this space, and it would be wrong: a rate is negotiated between one hospital and one insurer, so what any of those insurers pays here tells you nothing about what Humana pays.

The file does not say why it is missing — Humana may not be contracted here for this service, or the hospital may have left it out of the disclosure it is required to publish. Both are worth asking about: ask the hospital for the rate, and ask Humana whether this hospital is in your network.

The same procedure, at this one hospital, ranges from $35.19 to $313. That is not an error, and it is not our arithmetic — it is what the hospital published.

Two things are happening. Rates differ between insurers and plans, as you would expect — and the same plan also appears more than once at different prices. Each rate below is shown with the hospital's own line-item description, so you can read how its file labels them. The file does not say which one you would be billed under, so we show every figure rather than pick one.