Building a D-SNP Network from Scratch: A Step-by-Step Playbook

Why D-SNP Networks Are Different

Dual-eligible special needs plans serve beneficiaries who qualify for both Medicare and Medicaid — typically low-income seniors or individuals with disabilities. Because D-SNPs must meet both CMS Medicare Advantage network adequacy standards and state Medicaid managed care requirements, they are among the most complex network builds in health plan operations.

The key complexity: CMS sets the floor for MA adequacy, but your state Medicaid agency sets additional requirements that are often more stringent and almost always different in format. A provider that satisfies MA adequacy may not satisfy Medicaid credentialing or contract requirements, and vice versa. Your network team has to track both simultaneously.

D-SNP-Specific Network Requirements

Beyond standard MA requirements, D-SNPs must include:

• Federally Qualified Health Centers (FQHCs) and Rural Health Clinics (RHCs) — Medicaid law requires adequate FQHC access and most state contracts specify minimum ratios
• Long-term services and supports (LTSS) providers — home health aides, personal care attendants, adult day services
• Social service providers in many states — legal aid, housing navigation, food assistance — as part of the Medicaid Value-Based Care alignment requirements
• Behavioral health parity compliance, which is evaluated separately by both CMS and the state

Phase 1: County Selection (Months 1–3)

Start with a county-by-county adequacy analysis before committing to a service area. For each candidate county, you need:

• Medicare provider enrollment data — who is enrolled and accepting new patients
• State Medicaid provider directory — which providers are currently contracted with the state FFS program (a strong proxy for willingness to contract)
• Dual-eligible population count by county — your potential membership base
• FQHC and RHC density map

Counties where you can model adequacy under both MA and Medicaid standards without exception filings should be prioritized for Year 1. Counties requiring exceptions in multiple specialty categories are Year 2 targets at best.

Phase 2: Outreach and Contracting (Months 3–9)

D-SNP provider outreach requires a different pitch than standard MA contracting. Providers serving dual-eligible populations are often already working in high-Medicaid environments and are familiar with the complexities. Your contracting team should lead with:

• The plan's care management model for complex patients — dual-eligibles have high complexity and providers want to know how the plan supports them
• Payment rates — D-SNP plans often pay at or above Medicare rates for primary care given the care coordination requirements
• Billing simplification — dual-eligible billing is notoriously complex; plans that offer claims support get more provider sign-ons

Target your outreach sequentially: FQHCs and large multi-specialty groups first (highest adequacy impact per contract), then specialist categories with the tightest standards.

Phase 3: Credentialing and Final Submission (Months 9–12)

Credentialing for D-SNPs must satisfy both the plan's own credentialing standards and any state Medicaid delegation requirements. Many states require you to notify the Medicaid agency of your credentialing delegation arrangement and provide audit access.

• Allow 90–120 days for full credentialing cycles — primary source verification takes time
• Track CAQH roster currency — outdated CAQH profiles are a leading cause of credentialing delays
• Build your Medicaid encounter data reporting infrastructure before go-live — most states require encounter data submission within 30 days of first claim

A realistic D-SNP network build from county selection through first submission takes 12–18 months for a plan entering a new state. Plans building on an existing MA network can compress this to 9–12 months if they already hold contracts with the core provider set.