Onix Silverside LLC
NPI 1023368719 · Skilled Nursing Facility · Wilmington, DE
Enrolled with Medicare as Part a Provider - Skilled Nursing Facility · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Onix Silverside LLC is a Skilled Nursing Facility organization in Wilmington, DE (NPI 1023368719).
Provider details
- NPI number
- 1023368719
- Entity type
- Organization
- Primary specialty
- Skilled Nursing FacilityNursing & Custodial Care Facilities
- Organization subpart
- No
- Authorized official
- Rebecca Margis, Corporate Finance Director(484) 731-2500
Specialties & taxonomies
Nursing & Custodial Care Facilities
Nursing & Custodial Care Facilities
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Other names (DBA / former)
- Doing business as
- Cadia Rehabilitation Silverside
Registry dates
- Enumerated
- 2012-09-11
- Last updated
- 2019-12-18
- Certified
- 2019-12-18
Frequently asked questions
- What is Onix Silverside LLC's NPI number?
- Onix Silverside LLC's National Provider Identifier (NPI) is 1023368719, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Onix Silverside LLC?
- Onix Silverside LLC is classified in the NPPES registry as Skilled Nursing Facility (Nursing & Custodial Care Facilities).
- Where is Onix Silverside LLC located?
- Onix Silverside LLC's practice location on file with NPPES is 3322 Silverside Rd, Wilmington, DE 19810-3307.
- What is Onix Silverside LLC's phone number?
- The practice phone number listed in the NPPES registry for Onix Silverside LLC is (302) 478-8889.
- Does Onix Silverside LLC accept Medicare?
- Onix Silverside LLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Onix Silverside LLC?
- The authorized official listed on Onix Silverside LLC's NPPES record is Rebecca Margis, Corporate Finance Director. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Onix Silverside LLC's NPI active?
- Yes — Onix Silverside LLC's NPI (1023368719) is active in the NPPES registry as of the last update on 2019-12-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.