CMS-855S: DMEPOS Supplier Enrollment
Medicare enrollment application for durable medical equipment, prosthetics, orthotics, and supplies suppliers, with heightened standards including accreditation and surety bond.
Primary source
CMS-855S Form — CMS.gov →https://www.cms.gov/medicare/cms-forms/cms-forms/downloads/cms855s.pdf
Verified May 23, 2026 · This is the authoritative regulator URL. The summary below is a research aid; the linked source controls.
Additional sources
The CMS-855S is the Medicare enrollment application for suppliers of durable medical equipment, prosthetics, orthotics, and supplies (DMEPOS). DMEPOS enrollment carries heightened standards beyond standard supplier enrollment.
Required elements unique to DMEPOS:
- Accreditation by a CMS-approved accreditation organization, with limited carve-outs for certain physician/NPP-furnished items.
- Surety bond of at least $50,000 per location (with stacking rules for additional locations).
- Supplier standards compliance — the 30 DMEPOS Supplier Standards at 42 CFR 424.57(c)) cover facility, licensure, recordkeeping, beneficiary access, complaint procedures, and operational requirements.
- Liability insurance of at least $300,000.
- Revalidation cycle: every 3 years (rather than 5 for most other supplier types).
DMEPOS enrollment is administered by the National Supplier Clearinghouse (NSC), not the regional MAC. Site visits are common — the NSC physically inspects supplier locations as part of enrollment and revalidation.
Failure to maintain accreditation or surety bond is a basis for immediate revocation under 42 CFR 424.535.
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Related regulations
CMS-855B: Medicare Enrollment Application for Clinics and Group Practices
CMS · CMS EnrollmentCMS-855I: Medicare Enrollment Application for Individual Physicians and Non-Physician Practitioners
CMS · CMS EnrollmentCMS-855O: Medicare Enrollment for Eligible Ordering and Certifying Physicians and Other Eligible Professionals
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Related across the archive
- RegulationCMS-855B: Medicare Enrollment Application for Clinics and Group PracticesThe Medicare enrollment application for clinics, group practices, and certain other suppliers — the primary enrollment vehicle for medical practices that bill Part B.
- RegulationCMS-855I: Medicare Enrollment Application for Individual Physicians and Non-Physician PractitionersIndividual Medicare enrollment vehicle for physicians, NPPs, and certain other individual suppliers; required for any clinician billing Medicare under their own name.
- RegulationCMS-855O: Medicare Enrollment for Eligible Ordering and Certifying Physicians and Other Eligible ProfessionalsAbbreviated Medicare enrollment for clinicians who order or certify items and services for Medicare beneficiaries but do not personally bill Medicare.
- ComplianceAdditional Documentation Request (ADR): How to Respond Inside the WindowMedicare ADR response windows are contractor-specific (45 days for MAC/SMRC/RAC, 30 days for UPIC). Miss the window and the claim auto-denies. Here is the procedure that actually works.
- ComplianceDME Documentation Requirements: Surviving a DMEPOS AuditHow CMS Pub. 100-08 Chapter 5, 42 CFR § 424.57 supplier standards, and UPIC and SMRC audit procedures govern DMEPOS documentation in 2026, with the exact records auditors request.
- ComplianceOrthopedics Compliance: DME + ASC + Imaging Safety StackHow DMEPOS supplier standards at 42 CFR 424.57, ASC Conditions for Coverage at 42 CFR Part 416, Stark in-office DME exceptions, and state radiation-control rules apply to orthopedic practices.
- CompliancePodiatry Compliance: DME + X-ray + Medicare Routine Foot Care RulesHow the Medicare routine foot care exclusion at 42 CFR 411.15, DMEPOS supplier standards at 42 CFR 424.57 for orthotics and diabetic shoes, state radiation-control rules for in-office X-ray, and the narrow Stark in-office ancillary services exception at 42 CFR 411.355(b) apply to podiatry.
- GlossaryCAQH CredentialingThe CAQH ProView database used by most commercial payers to credential providers.
Last reviewed May 23, 2026 · Citation verified May 23, 2026
Research aid, not legal advice. This summary is an administrative research aid prepared by D3rx. It does not certify compliance, provide legal advice, replace counsel, or guarantee an audit outcome. For authoritative regulatory text follow the primary source link at the top of this page. The practice remains responsible for reviewing, adopting, and maintaining its compliance program.