Send Delta Dental of Illinois claims electronically with payer ID 05030, or mail group plan claims to Delta Dental of Illinois, P.O. Box 5402, Lisle, IL 60532. For claims questions, Delta Dental lists 800-323-1743. Remember the Delta rule: bill the company on the patient's card, not the one in your state.
Last updated November 2026 · Reviewed by the PracticeAlpha billing team · Source: Delta Dental's national claims lookup
Get a free AR analysisFrom Delta Dental's national claims lookup. Confirm on the patient's card that the plan is with Delta Dental of Illinois before you submit.
| Detail | Delta Dental of Illinois |
|---|---|
| Claims mailing address (group plans) | Delta Dental of Illinois, P.O. Box 5402, Lisle, IL 60532 |
| Electronic payer ID | 05030 |
| Phone for claims questions | 800-323-1743 |
| Individual and family plans | Payer ID WDENC; claims to P.O. Box 103, Stevens Point, WI 54481; phone 855-335-8267 |
| Which Delta company to bill | The Delta company that insures the patient, shown on the ID card, not the Delta company in your state |
| Timely filing | Set by the patient's plan; check the plan details in the Delta portal |
Enter the date of service to see the filing deadline and how many days are left. Delta Dental of Illinois does not publish one limit for every plan.
Limits are the ones Delta Dental of Illinois publishes, as summarized on this page; the patient's own plan documents win if they differ. Corrected claims and appeals have their own deadlines (see below).
Have claims close to the limit? Free AR analysisSend us your aging list. We will tell you which Delta Dental of Illinois claims are still recoverable, what is holding each one up, and what a fix is worth. Free, no obligation.
Get a free AR analysisWe handle Delta Dental of Illinois provider credentialing and enrollment for dental practices and new associates, from the application to the effective date, so claims stop coming back out of network.
Delta Dental of Illinois credentialing →Send Delta Dental of Illinois claims electronically with payer ID 05030. Paper claims for group plans go to Delta Dental of Illinois, P.O. Box 5402, Lisle, IL 60532. The phone number Delta Dental lists for Delta Dental of Illinois claims questions is 800-323-1743.
Individual and family plans are processed separately, under payer ID WDENC, at P.O. Box 103, Stevens Point, WI 54481. Check whether the card says it is an individual plan before you choose the payer ID.
Delta Dental's rule is that a claim goes to the Delta company that provides the patient's coverage, not to the Delta company where your office is. A patient who works for a company headquartered elsewhere can carry a Delta Dental of Illinois card while living in another state, and the reverse is just as common. Read the company name on the ID card, or look the patient up under My Patients in the National Dentist Dashboard, before you submit.
Your participation is honored nationally: if you are a Delta Dental PPO or Premier dentist with your own state's Delta company, you are treated as in network for Delta Dental of Illinois patients too, at the applicable fee schedule.
Most Delta Dental claims that come back unpaid were sent to the wrong member company, sent under the wrong payer ID, or hit a frequency limit nobody checked. Verify the company, plan type (PPO, Premier, DHMO or individual) and frequencies before the visit. The Delta Dental claims guide covers national rules, and our verification service does this for every patient.
Delta Dental lists payer ID 05030 for Delta Dental of Illinois group plans. Individual and family plans use WDENC.
Delta Dental of Illinois, P.O. Box 5402, Lisle, IL 60532. Individual and family plans: P.O. Box 103, Stevens Point, WI 54481.
Delta Dental lists 800-323-1743 for Delta Dental of Illinois claims questions.
To the Delta company that insures the patient. If the card says Delta Dental of Illinois, file with Delta Dental of Illinois wherever your office is.
In Lisle, IL.
It is set by the patient's Delta Dental of Illinois plan. Check the plan details in the Delta portal and file as soon as possible.