CMS-855S · Form guide

Form 855S: what CMS actually checks

DMEPOS suppliers. You sign it. Enrollment Watch does not.

A DMEPOS cycle is 3 years, not 5. The public file still will not show the date until about six months out.

What the form is actually about

• Supplier type and products
• Location where the inventory sits
• Accreditation
• Surety bond
• Adverse legal actions

Returns we see when a package comes back

• Accreditation lapsed
• Site address does not match NPPES
• Legal name does not match the IRS letter

Check the public NPI record before you type

The free lookup shows the NPI, the state, and which form to file. The paid check compares the address and specialty with the public NPI registry. It cannot see your PECOS screen.

Example NPI lookup · Form 855S