What is a silent PPO in dental billing?

A silent PPO is a third-party payer that pays a claim at a dentist's negotiated discounted rate without having its own direct contract with that dentist. It works by leasing or buying access to the network and fee schedule from the PPO the dentist actually signed with. At least 14 states have laws targeting this practice specifically; a larger, separate wave of network-leasing transparency laws, described below, regulates the more common lawful version of the same mechanism.

What does California's AB 954 require dental plans to disclose?

AB 954, codified at California Insurance Code Section 10120.4 and effective for contracts entered or renewed on or after January 1, 2020, requires a dental insurer that leases network access to a third party to say so on the first page of the provider contract, in 12-point underlined type, and to maintain a public, up-to-date website list of every third party with access to that network.

Can a dentist opt out of having their network leased to a third party?

Under AB 954, yes, without having to terminate the original provider contract. The dentist chooses not to participate in third-party access while keeping the underlying agreement with the plan they signed. The NCOIL model act adopted in at least 18 states carries a similar opt-out provision.

How much advance notice must a plan give before a new third party gets access to a leased network?

Under California's law and the NCOIL model act framework that other states have adopted, the standard is 30 days' notice to the provider before a new third-party arrangement takes effect, plus the right to request a full copy of the provider network contract, which the plan must produce within 30 days.

Does network leasing disclosure apply everywhere, or only in states with a specific law?

Only where a state has passed a leasing-transparency or anti-silent-PPO statute. Coverage is uneven: roughly 14 states restrict undisclosed silent-PPO discounting outright, and a separate, overlapping set of at least 18 states have adopted the NCOIL model act's disclosure and opt-out framework. A practice should confirm its own state's statute rather than assume either protection applies.

How does leased network access actually show up on a remittance?

As a claim paid at the practice's negotiated PPO rate by a payer whose name does not match any contract the practice signed. Under a compliant leasing law, the remittance or an accompanying notice is required to identify the source of the discount; where that identification is missing, the practice has a documentation gap worth raising with the payer directly.

Your PPO Discount Is Being Taken by a Payer You've Never Contracted With. 18 States Now Make Them Tell You.

A remittance comes in from a payer you have never heard of, at your PPO rate, for a patient you treated under a completely different plan. Nobody forged anything. Somewhere in the provider agreement you signed years ago is a clause that let your negotiated fee schedule travel to a company you never met.

This is network leasing, and in dental it is the single most misunderstood line on a fee schedule.

The mechanism nobody explains at signing.

A PPO network is, functionally, two things bundled together: a list of dentists who agreed to a discount, and the discount itself. A contracting entity can sell or lease that bundle to a third-party payer, who then pays claims for its own members at your negotiated rate, without ever having a direct agreement with you. It is not theft. It is a clause, usually a few lines long, buried in the “assignment” or “third-party access” section of the contract you already signed.

The regulation

California's AB 954, codified at Insurance Code Section 10120.4 and effective for provider network contracts entered into or renewed on or after January 1, 2020, requires a dental insurer that grants third-party access to a leased network to disclose it on the first page of the contract in 12-point underlined type, maintain a public website list of every third party with access, and give the provider 30 days' notice before a new third party is added.

Source: Cal. Ins. Code Section 10120.4 (AB 954, 2019)

The unauthorized version of this, where a payer takes the discount with no lease or contract chain back to the original agreement at all, is what the industry calls a silent PPO, sometimes a ghost PPO or blind PPO. At least 14 states have statutes aimed specifically at that unauthorized version. The lawful, disclosed version, leasing with notice and an opt-out, is the more common arrangement, and it is what most of the newer state laws actually regulate.

Why this stayed invisible for so long.

Nothing on a standard remittance is required to say “this claim was paid under a leased network, originating from your contract with Plan A, on behalf of Plan B.” Before disclosure laws existed, a front desk had no realistic way to trace a strange payer name back to the contract that authorized it. The practice’s own signed agreement was the only place the authorization lived, and almost nobody re-reads a signed contract looking for a leasing clause.

The National Council of Insurance Legislators addressed this with a model act, the Transparency in Dental Benefits Contracting Model Act, adopted in 2020 and updated since. States that pass it get a common shape: leasing is permitted, but only with disclosure, a public list of the third parties involved, and a provider opt-out that does not require walking away from the original contract. At least 18 states have adopted some version of this framework.

What the opt-out actually buys you.

Opting out under a law like AB 954 does not mean leaving your PPO. It means telling that specific plan: pay me under this contract, for the members I agreed to see, and stop routing other companies’ claims through my fee schedule. The plan keeps its relationship with you. The leased third parties lose access to your rate.

Two things make the opt-out worth exercising, not just theoretical:

The discount is often stacked lower than you think. A leased third party is frequently a step or two removed from the plan you actually negotiated with, and the rate that reaches you can reflect additional markup or bundling decisions made by the leasing chain rather than your original negotiation.

You cannot audit what you cannot see. Without the website list a compliant law requires, there is no way to know how many entities are paying at your rate. The list is not a courtesy. It is the only inventory a practice has of who is using its fee schedule.

The part that gets missed on the audit side.

A practice reconciling remittances against its fee schedule usually checks whether the dollar amount matches the contracted rate. That catches underpayment. It does not catch the separate question of whether the payer making that payment had any right to your rate at all. Those are two different audits, and most practices only run the first one.

Pulling the last twelve months of remittances and sorting by payer name is the fastest way to see this. A payer name that does not match a signed contract is not automatically wrong, it may be a lawfully leased third party, but it is a name worth checking against your state’s disclosure requirements and, where one exists, the plan’s public leasing list.

If your state has adopted a leasing-transparency law and the required disclosure never reached you, that is a documentation gap the plan owes you an answer for, not something to write off as normal.

We run this reconciliation, along with the medical-necessity and coding review that recovers most of a practice’s missing money, on a contingency. No recovery, no fee.

Get your 12-Month Missing Money Scan. It checks your remittances against your fee schedule and flags the payer names that do not trace back to a contract you signed.