Delta Dental of Washington

This page collects the Delta Dental of Washington numbers, portal, payer IDs, mailing addresses and filing rules a dental front desk needs, taken from the payer's own provider materials and last checked on September 25, 2026.

Plan types: PPO, Premier, DeltaCare (DHMO), Individual & Family (DeltaDentalCoversMe), Medicare Advantage, WA Health Benefit Exchange plans, Large group dental, Vision (DeltaVision, via VSP) · States: WA

Delta Dental of Washington phone numbers for dental offices

Fax numbers

Delta Dental of Washington provider portal

The provider portal is Provider Portal (deltadentalwa.com): https://www.deltadentalwa.com/sign-in.

• Submit claims and upload documentation
• Convert predeterminations to claims
• Check claim status
• Check patient benefits
• View payment vouchers
• Pay a claim invoice online

Patients use a separate member portal: https://www.deltadentalwa.com/sign-in.

Delta Dental of Washington payer IDs for electronic claims

Delta Dental of Washington claims and appeals mailing addresses

Timely filing limits

• Original claims: 6 months from date of service (later claims may be processed as not billable to the patient)
• Appeals: 180 days from the claim processing date for a patient-requested review (Subscriber Appeals Form)

EFT and ERA enrollment

Washington providers complete the Direct Deposit form (processed in 7-10 business days) for EFT and ERA from DDWA and out-of-state Delta Dentals; EFT enrollees are auto-enrolled in National EFT/ERA unless they opt out. Offices under one TIN must use the same payment method. ERA comes through one chosen clearinghouse (Emdeon, DentalXChange or TESIA).

Credentialing and network enrollment

Contact: https://www.deltadentalwa.com/provider/resources/forms; (800) 554-1907 or Provider Ambassadors (206) 528-5332 / (800) 432-1723

New Premier and PPO applications are processed within 18-21 business days. Member dentists are recredentialed every 3 years, with an email notice before the due date. Applications are for Washington providers only; out-of-state dentists apply through their local Delta Dental.

Plan clauses to check during verification

Missing tooth clause

Provider FAQ states: "No, there is no missing tooth clause."

Waiting periods

Waiting periods are set by the group plan. Confirm the waiting period for basic and major services and the patient's effective date.

Downgrades (alternate benefit)

Ask whether posterior composites are paid at the amalgam rate and whether crowns downgrade to a base-metal benefit, so the patient estimate is right the first time.

Frequency limits

A Time Limitation Exception Form can change a time-limited claim from not billable to patient responsibility, not to a paid benefit.

Verification checklist for Delta Dental of Washington

• Use the Provider Portal to check benefits and claim status; phone Provider Services closes 1-2pm PT on Thursdays and Fridays.
• Confirm whether the patient has an employer plan, a DeltaDentalCoversMe plan or DeltaCare. Individual plan members use (888) 899-3734 and a separate sign-in.
• For DeltaCare patients, confirm the assigned Primary Care Dentist and panel status with a Provider Ambassador before treating; DeltaCare pays monthly capitation.
• DDWA states there is no missing-tooth clause, but check the specific plan booklet before assuming implant or bridge coverage.
• Confirm which clearinghouse is registered to receive your ERA; DDWA delivers ERA through only one clearinghouse per provider.
• Claims submitted more than 6 months after service may be processed as not billable to the patient, so file promptly.
• Record the representative's name, the call reference number and the date for every phone verification.

Related guides

• Member company of the Delta Dental Plans Association; see the national Delta Dental guide.
• DeltaDentalCoversMe (individual plans) and DeltaVision (via VSP) have their own sign-in systems, separate from deltadentalwa.com.
• The missing tooth clause: how to spot it during verification
• Timely filing limits for dental insurance claims
• Best practices for dental ERA enrollment
• All dental insurance payer phone numbers and portals

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Sources

Every number and address above comes from Delta Dental of Washington's own website or provider documents, checked on September 25, 2026. Payers change phone trees and PO boxes, so confirm with the payer before you mail anything time-sensitive.

• Provider Home | Delta Dental of Washington
• Contact Us | Delta Dental of Washington
• FAQs - Provider | Delta Dental of Washington
• eServices Availability Status | Delta Dental of Washington
• Forms | Delta Dental of Washington
• 2023 Member Dentist Rules and Regulations (PA-RR 20230101) | Delta Dental of Washington
• Subscriber Appeals Form | Delta Dental of Washington
• Contact information for Delta Dental member companies (PDF, rev. 10/24)
• Subscriber Appeals Form | Delta Dental of Washington