Ambetter marketplace dental is administered by Centene Dental Services (formerly Envolve Dental). Electronic claims use payer ID 46278. On paper, every state has its own Tampa P.O. box and provider line, so pick the state below. Faxed claims are not accepted.
Last updated November 2026 · Reviewed by the PracticeAlpha billing team · Source: Centene Dental Services' 2026 Ambetter plan specifics and provider manual
Get a free AR analysisAmbetter's medical claims box is not the dental box. Dental claims go to Centene Dental Services.
| Detail | Ambetter dental |
|---|---|
| Administrator | Centene Dental Services (formerly Envolve Dental) |
| Electronic payer ID | 46278 |
| Paper claims and appeals | A state-specific P.O. box in Tampa, FL (use the state picker below) |
| Faxed claims | Not accepted: copies, handwritten or faxed forms are rejected |
| Provider portal | centenedental.com (provider web portal) |
| Timely filing | 180 calendar days from the date of service, 365 in Michigan, including corrected claims |
| Appeals | 180 days from the notice (Florida 90, Michigan 365, Texas 120); dentalhwappeals@centene.com or the state box |
| Predeterminations | Not processed; no authorization required |
| Networks | Centene Dental network, plus United Concordia Advantage Plus in 23 states |
Enter the date of service to see the filing deadline and how many days are left. The limit includes resubmitted corrected claims.
Limits are the ones Ambetter 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 Ambetter 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 payer credentialing and enrollment for dental practices and new associates, from the application to the effective date, so claims stop coming back out of network.
Dental credentialing services →Centene Dental Services runs Ambetter dental in 25 states, and each state has its own claims and appeals box in Tampa and its own provider line. Several states share a box, but never assume: use the picker.
From Centene Dental Services' 2026 Ambetter key contacts. Claims and appeals use the same box.
Ambetter claims stuck? Free AR analysisNo faxes and no copies. Centene Dental Services does not accept copied, handwritten or faxed claim forms. Send electronically under payer ID 46278 or mail an original current ADA form.
Corrected claims go on an original current ADA form marked CORRECTED CLAIM, listing all codes originally billed and the original claim number, or through the provider portal. They count against the same 180-day limit (365 in Michigan), so a correction sent late is a denial.
No predeterminations. Centene Dental Services does not process them and does not require authorization for Ambetter dental. Verify benefits instead, and call the state provider line if a benefit is unclear.
Ambetter dental covers out-of-network care only in Arkansas, Mississippi, Oklahoma and Texas, and in some Indiana and Missouri Ambetter Solutions plans. Elsewhere, an out-of-network dentist should expect no payment, so check network status before treatment. Many states also use the United Concordia Advantage Plus network alongside Centene's own.
Appeals are due 180 days from the notice in most states, 90 in Florida, 365 in Michigan and 120 in Texas, by email to dentalhwappeals@centene.com or by mail to the state box. See our appeals guide.
46278, for Centene Dental Services, which administers Ambetter dental.
It depends on the state. Each state has its own P.O. box in Tampa, FL; for example Florida, North Carolina and Tennessee use PO Box 20654, Tampa, FL 33622-0654, and Texas and Nevada use PO Box 25518.
Each state has its own provider line; for example Florida 888-983-4691 and Texas 855-586-1417.
180 calendar days from the date of service (365 in Michigan), including corrected claims.
No. Copies, handwritten and faxed forms are not accepted.
No. Centene Dental Services does not process predeterminations and does not require authorization for Ambetter dental.
Centene Dental Services, formerly Envolve Dental.