Out-of-Network Endodontist? How Insurance Reimbursement Works

Updated May 21, 2026. On April 30, 2026, dental providers filed class-action complaints in California, Wisconsin, Michigan, and Massachusetts state courts alleging that Delta Dental entities engaged in anticompetitive conduct that suppressed reimbursement rates paid to dentists and limited competition in dental insurance markets.¹ These are allegations in pending litigation — not findings of fact, and the cases have not been decided. We mention the news here because patients reasonably ask why so many specialist offices are out-of-network with the largest dental insurers. The defendants have not yet responded in court, and no court has ruled on the merits of these claims. The patient-centered explanation, separate from the litigation, is that many specialist practices report insurer "allowed amounts" do not always reflect the overhead of specialist-level time, microscope-based technique, and 3D imaging in higher-cost markets like the Bay Area — which is part of why patients increasingly see specialists outside their PPO network. The rest of this article explains, in plain terms, how your PPO benefits still work for you when your endodontist is out-of-network — and how to know your out-of-pocket cost before you sit in the chair.

One of the first questions patients ask when they're referred to a specialist is: "Will my insurance cover this?" If the specialist is out-of-network, that question gets more complicated — and the answer is often better than people expect. Understanding how reimbursement works can help you make a confident decision about your care without any financial surprises.

In-Network vs. Out-of-Network: What's the Actual Difference?

When a dentist is in-network, they've signed a contract with your insurance company agreeing to accept a set fee schedule. In exchange, the insurer sends patients their way. When a dentist is out-of-network, no such contract exists — but that doesn't mean insurance goes away entirely.

Most PPO (Preferred Provider Organization) dental plans still provide some reimbursement for out-of-network care. The key word there is PPO. HMO or DMO plans typically do not cover out-of-network providers at all, so it's worth a quick call to your insurer to confirm what type of plan you have before your appointment.

Silicon Valley Endodontics & Microsurgery is out-of-network with all PPO insurance plans. This is a deliberate choice — it allows Dr. Kung to spend the time each case genuinely requires, use the best available technology, and focus entirely on clinical outcomes rather than volume-driven contracts.

How PPO Reimbursement Actually Works

Here's the process in plain terms:

• You pay at the time of your appointment. As an out-of-network office, we collect payment directly from you on the day of your visit.
• We file a claim to your insurance on your behalf. We submit the claim electronically using standardized procedure codes, so you don't have to handle the paperwork yourself.
• Your insurer processes the claim and issues reimbursement, usually within 3–6 weeks. Where the check goes depends on the carrier: With Delta Dental PPO, the check is commonly mailed directly to you because Delta typically does not honor assignment of benefits to non-participating providers (confirm the specific behavior with your plan). Most other PPOs (MetLife, Cigna, Aetna, Guardian, Anthem, United Healthcare, and similar) send payment to our office, and we promptly refund you the insurance portion of what you already paid at your visit.
• The amount reimbursed depends on your specific plan's out-of-network benefit level, your annual deductible, and the "allowable" fee your plan recognizes for that procedure.

Many patients are pleasantly surprised to find that their PPO pays a meaningful portion of the fee. Reimbursement often covers 40–70% of the insurer's "allowable" amount for procedures like root canals, though the exact figure varies by plan.

What Is an "Allowable" Amount — and Why Does It Matter?

Insurance companies set their own internal fee benchmarks, sometimes called "usual, customary, and reasonable" (UCR) fees or simply "allowable" amounts. These are the figures your insurer uses to calculate your reimbursement — not our actual fee.

If your plan pays 50% of the allowable amount, and the allowable amount is $900 for a molar root canal, you'd receive roughly $450 back — regardless of what we actually charged. This gap between what insurers recognize and what specialist care actually costs is one reason specialist offices are frequently out-of-network.

The good news: you can call the member services number on the back of your insurance card and ask specifically about out-of-network endodontic benefits. Ask for the "allowable fee" for procedure codes D3330, D3331, or D3332 (molar, premolar, and anterior root canals, respectively). This gives you a real estimate before you commit.

What About a Pre-Treatment Estimate?

You — or our office — can submit a pre-authorization request (also called a pre-determination or pre-estimate) to your insurer before treatment begins. This is not a guarantee of payment, but it gives you a written projection of what your plan is likely to reimburse. It typically takes 1–2 weeks to receive a response.

If timing is urgent — for example, you're in pain and need a root canal soon — waiting for a pre-authorization may not be practical. In those cases, calling your insurer directly for a verbal estimate is usually faster.

Why Specialist Care Is Often Worth the Out-of-Pocket Gap

Endodontic procedures are among the most technically demanding in dentistry. The difference between a successful root canal and one that fails — or requires retreatment or an apicoectomy — often comes down to the precision of the original treatment.

At Silicon Valley Endodontics, Dr. Kung uses a Zeiss OPMI surgical microscope for every procedure, providing magnification and illumination far beyond what the naked eye can achieve. CBCT 3D imaging lets him visualize your tooth's anatomy in three dimensions before touching an instrument — identifying hidden canals, fractures, or unusual anatomy that flat X-rays routinely miss.

These tools meaningfully improve outcomes. Root canal success rates in specialist endodontic offices typically exceed 90–95% for straightforward cases. When you factor in the cost of a failed root canal, retreatment, or tooth loss, investing in high-quality specialist care upfront often makes financial sense — even with an out-of-network gap.

Financing Options If You Need Them

We understand that paying upfront before reimbursement arrives can be a strain. To help bridge that gap, we accept CareCredit, a healthcare financing card that offers promotional interest-free periods for qualified applicants. You can apply at carecredit.com before your appointment.

We do not accept medical insurance and do not offer in-house payment plans. For a full overview of billing and payment details, visit our insurance and billing page.

Questions Before You Book?

We're happy to help you understand your benefits before you schedule. Our team can walk you through what information to gather from your insurer and what reimbursement might look like for your specific procedure — whether that's a root canal, cracked tooth evaluation, or trauma consultation.

If you'd like to talk through your options or schedule a consultation with Dr. Kung, contact us online or call (669) 234-2354. We're located at 1565 Hollenbeck Ave, Suite 106, Sunnyvale, CA 94087 — and we're glad to help you make sense of the process before you commit to anything.