Delta Dental, Cigna, Aetna: Why Reimbursement Rates Vary and How to Evaluate Your Own Carriers "Which carrier pays best?" is the right question asked the wrong way. There is no universal national ranking — reimbursement varies by market, network tier, procedure code, and the negotiation history of each individual contract. What matters is not which carrier pays best nationally, but which carriers are performing well in your practice, in your market, on your specific fee schedule. This article explains why rates differ and how to evaluate any carrier on its own economics, using your own data. There is no universally "best-paying" carrier — the same carrier can be your strongest payer in one market and your weakest in another. Rate differences are driven by structural factors: UCR percentile methodology, network tier, market competitiveness, and negotiation history. The reliable way to judge any carrier is your net reimbursement rate — net collections divided by gross production — not its national reputation. Why is there no universal "best-paying" carrier? The dental insurance landscape is more fragmented than it looks from the outside. Each major carrier — Delta Dental, Cigna, Aetna, MetLife, Guardian, United Concordia — operates multiple distinct network tiers, each with its own fee schedule. Delta Dental alone maintains separate Premier and PPO schedules, and rates between those two tiers can differ by 15–30% for the same procedure code. Geography compounds it. Rates are calibrated to local market conditions — what insurers call the "usual, customary, and reasonable" (UCR) fee for a procedure in an area. A crown reimbursed at $950 in one market may be reimbursed at $1,350 for the same code in another. A carrier that looks "low-paying" in one place can be among the better options somewhere else. Negotiation history adds a third layer. Two practices in the same ZIP code, contracted with the same carrier, can earn meaningfully different rates based solely on whether — and how well — they have negotiated. Any statement like "Carrier X pays more than Carrier Y" is only true for a specific practice, market, tier, and moment in time. What actually drives reimbursement rate differences? Understanding the structural factors behind rate differences gives you the leverage to evaluate and improve your own contracts. UCR percentile methodology. Each carrier sets its schedule at a percentile of the usual-and-customary fees in an area — often the 50th, 70th, or 80th. Higher percentiles generally reimburse more. Practices rarely know which percentile applies, though it can sometimes be requested from provider relations. Network tier. Premier and PPO tiers within the same carrier can carry very different schedules. Some carriers add "enhanced" or "preferred" tiers for high-volume or underserved-area practices. Knowing your tier is a prerequisite for any meaningful comparison. Market competitiveness. Where dentists are scarce relative to insured patients, carriers have more incentive to offer competitive rates. In high-density markets that pressure eases — one reason rural practices sometimes report better relative reimbursement than urban ones in the same state. Negotiation history. Carriers are not obligated to raise your rates over time. If you signed years ago and never asked for an increase, your rates have likely not kept pace with rising overhead. The system isn't built to volunteer a better rate. It's built to hold the one you accepted. How do you evaluate your own carriers objectively? Rather than relying on rankings that may not apply to you, calculate each carrier's actual financial performance from your own production, adjustment, and collections data. The core calculation is simple: for each carrier, divide net collections by gross production to get a net reimbursement rate. That single number tells you what share of your full fee schedule you actually keep after contractual adjustments and patient collections. Retaining 75 cents on the dollar is a very different relationship from retaining 55 — regardless of either carrier's reputation. Igion's KEEP/MONITOR/RECONSIDER framework uses this net reimbursement rate as its primary signal. It operationalizes what consultants have long advised: judge each carrier on its real contribution to your bottom line, not its brand. The benchmark behind it is gold-standard, carrier-bias-free benchmark data, modeled to ZIP — so "good" is measured against your market, not a national average. How do the major carriers actually differ? A definitive ranking isn't possible, but there are meaningful structural differences worth understanding as context for your own analysis. Delta Dental is the largest dental insurer in the U.S. by enrollment, so for many practices its patients are simply a large share of the insured population. Its Premier network has historically been more favorable to providers than its PPO network, though the gap has narrowed in many markets. The useful question is not "is Delta Dental good?" but "which tier am I on, and what is my net reimbursement rate on my top 20 codes?" Cigna runs both a DPPO and a DHMO, with different reimbursement structures. Its DPPO rates vary by market. Cigna also participates in "leased network" arrangements, where your Cigna contract may govern reimbursement for patients covered by other carriers — worth investigating if you see unexpected patients billed through your Cigna schedule. Aetna similarly operates PPO and HMO networks with different rate structures. Its Vital Savings network is a discount plan rather than traditional insurance, and practices sometimes find themselves enrolled without fully understanding the fee-schedule implications. MetLife and Guardian are often cited as carriers where negotiation has historically been productive — a statement about the process, not their base rates. Across all carriers, the consistent theme is that your contract terms, market, and negotiation history shape your experience more than any national reputation. What practical steps should you take? The most productive use of your time is generating your own data, not researching rankings. Export production, adjustment, and collections data by carrier from your practice management software — most systems produce this as a CSV. Calculate the net reimbursement rate for each carrier, and compare it to your overhead percentage (industry benchmark: 60–65% of collections, per the ADA). Any carrier consistently below the level that covers overhead and a reasonable margin warrants a renegotiation request or a serious conversation about participation. 30–40% average PPO write-offs of gross production (ADA 2023 Dental Fees Survey) If you have never requested a fee increase, that is the highest-leverage action available before dropping any network — and it comes first. Raise your fee schedule, then renegotiate from a documented position of strength. According to the ADA's economic outlook surveys, roughly 23–30% of dentists dropped at least one network during 2024, with about 29% doing so in 2025 — with low reimbursement and administrative burden the two reasons cited most. Frequently asked questions Does Delta Dental always pay more than Cigna or Aetna? No. Rates vary by market, network tier, and contract history. One practice may find Delta Dental Premier its highest-paying carrier; another may find the opposite. The only reliable way to know is to calculate the net reimbursement rate from your own production and collections data. How do I find out which network tier my contract falls under? Contact each carrier's provider relations department and ask directly, or review your original participation agreement, which should specify the tier. For Delta Dental, confirming Premier versus PPO is particularly important. Can I negotiate my reimbursement rates with major carriers? Yes, and many practices that never attempt it are leaving revenue on the table. The process typically takes 60–90 days and involves a formal fee-increase request supported by data on your production volume and market fees. Specialists can assist if you prefer not to manage it yourself. What is a "leased network" and how does it affect my reimbursement? Some carriers lease access to their provider networks to other insurers, so patients covered by a different carrier may be billed at your contracted rate — sometimes without your awareness. If you see patients whose card shows a carrier you aren't directly contracted with, check whether your contract includes a network-leasing provision and whether you can opt out. How often should I review carrier performance? A comprehensive review at least annually is the minimum; quarterly monitoring of net reimbursement rates lets you catch declining trends before they compound. A periodic CSV export keeps the review straightforward. See where your carriers really stand The goal isn't to crown a winner or a villain — it's to see exactly how each carrier performs in your numbers, so you act on evidence instead of rumor. The UCR Market Fee Intelligence™ ($99) shows where your fees sit against gold-standard, carrier-bias-free benchmark data modeled to ZIP, and the Carrier Profitability Scorecard™ ($149) turns your own export into a carrier-by-carrier KEEP/MONITOR/RECONSIDER read. For the full picture, the Practice Intelligence Bundle — "The Practice Playbook" ($199) — combines both. See my numbers or see a sample. For more, read about the hidden costs of dental insurance beyond the fee schedule and how to choose dental insurance contracts when starting a practice.