The most expensive dental insurance mistake isn't denials. It's signing a contract without understanding where your claims will actually route — and at what fee schedule.
Network stacking is the practice of layering multiple network agreements on top of each other, so a claim travels through two or three repricing intermediaries before reimbursement hits your account. Each layer in the stack may apply a different fee schedule. The one that applies to your claim is often not the one you negotiated.
You agreed to Aetna's fee schedule. You got paid at Careington's rates. The difference showed up as a write-off that looked routine — because it is routine. It happens on every claim in the stack.
Here's how a single patient visit can travel through three network layers:
Understanding which networks are most likely to be in a given payor's stack is the starting point for routing intelligence. The major leased network intermediaries in dental include:
Zelis Healthcare — One of the largest repricing intermediaries in the country. Leases participation from dozens of major payors and applies their own contracted rates, which are often below what the primary payor would have paid.
Careington International — Operates multiple discount dental networks. Often appears at the bottom of the stack as the final repricing layer — and typically carries the lowest fee schedules.
DenteMax — A national dental PPO network frequently used as a leased network by regional and national payors. Particularly common in Midwest and Southeast markets.
Connection Dental / GEHA — Government employees plan network, frequently leased by other payors for their government employee subscriber populations.
DHA (Dental Health Alliance) — A leased network commonly associated with several major carriers in specific regional markets.
The most reliable signal is your EOB. When the repricing entity listed on the remittance advice is different from the plan name on the patient's ID card, your claim routed through a leased network. Most billing teams don't check this systematically — they process the payment and move on.
A more proactive approach: audit a sample of EOBs by payor, identify the repricing entity on each, and cross-reference against the fee schedule that was applied. If the applied rates don't match your contracted rates with the primary payor, the claim was repriced by a downstream network.
Do this for your top 5 payors by volume and you'll have a complete picture of your routing exposure within a week.
The goal isn't to terminate every leased network agreement. Some of them are fine — the repricing is modest, the volume justifies participation, and the patient access benefit outweighs the fee discount.
The goal is to identify which specific routing paths are costing you money — and either renegotiate, add language prohibiting downstream leasing to specific networks, or exit those plans selectively.
That requires knowing the routing before you sign — not after 18 months of processing claims at the wrong rate.
Enter any payor and see the probability distribution of network routing paths, fee schedule hierarchy, and implied repricing impact — instantly.
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