Wellmark's medical payer ID is 88848 (Availity's Wellmark page). Wellmark says it is an independent licensee of the Blue Cross and Blue Shield Association, serving Iowa and South Dakota (Contracts and Credentialing guide, January 2026).
Checked 10/1/26.
Quick facts
Payer ID 88848 (medical and FEP dental; 88851 is dental). Availity transactions: 270/271, 837P/I/D, 276/277, 835. Out-of-state BlueCard claims 800-701-0997. Case management 800-552-3993, option 1. Technical support 800-407-0267.
| PPO and HMO eligibility and benefits | 800-362-2218, weekdays 7:30 a.m. to 5 p.m. Central |
|---|---|
| State regulator | Iowa Insurance Division |
Credentialing and behavioral health
Wellmark E-Credentialing Central handles all applications electronically. Validate or update your information every 90 days (provider site). Behavioral health types credentialed: psychologists, social workers, LMHC, LMFT and community mental health centers. Timely filing: 180 days is the guideline cited for new contracted providers. Residential mental health and chemical dependency inpatient care require precertification; some group plans require more (types of authorizations).
Medicare Advantage
Wellmark Advantage has its own paper address and a 65-calendar-day Level One appeal window. Do not apply those rules to commercial claims.
Frequently asked questions
What is the Wellmark payer ID?
88848 for medical and FEP dental claims. Dental uses 88851.
How do I credential with Wellmark in Iowa?
Through Wellmark E-Credentialing Central. All applications are electronic, and you validate or update every 90 days.
Is Wellmark part of Anthem?
No. Wellmark says it is an independent licensee of the Blue Cross and Blue Shield Association, serving Iowa and South Dakota.
How MCM South helps with Wellmark Iowa
MCM South bills Blue plans for psychotherapists and psychiatrists in the states we serve. We verify benefits, submit claims electronically, follow up on denials and appeals, and handle credentialing. Get a free quote. If a Wellmark Iowa claim is denied or credentialing stalls, we follow up for you.
MCM South currently serves practices in GA, MA, CT, TX, FL, NY, CO, TN, NC and IL, and has worked in all 50 states. If your state is not on that list, ask us. This page is operational guidance for billing, not legal advice. For real financial or legal exposure, talk to your attorney or compliance officer.
Related: Blue Cross by State · How Blue Cross Blue Shield Works · Billing Terms Glossary · CPT and E/M Code Guide · Who We Serve.
This is the MCM South guide to Wellmark Iowa for therapists and psychiatrists: where claims go, how appeals work, and what to check first.
Want a billing team that handles this for you? MCM South bills for psychotherapists and psychiatrists. Get a free quote.