Onix Silverside LLC

Onix Silverside LLC is a healthcare organization registered as Skilled Nursing Facility in Wilmington, DE, holding Type 2 (organization) NPI 1023368719 since 2012. The authorized official on file is Rebecca Margis, Corporate Finance Director.

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NPI	1023368719
Entity type	Organization (Type 2)
Legal business name	Onix Silverside LLC
Other name	<Unavail>
Practice address	3322 SILVERSIDE RD, Wilmington, DE, 19810
Phone	3024788889
Fax	4847311234
Enumeration date	2012-09-11
Last updated in NPPES	2019-12-18

Authorized official

Name	Rebecca Margis
Title	Corporate Finance Director
Phone	4847312500

Taxonomy & classification

Taxonomy code	Specialty	Primary	License	State
313M00000X	Nursing Facility/Intermediate Care Facility	Secondary	—	—
314000000X	Skilled Nursing Facility	Primary	—	—

Other identifiers

Identifier	Type	State	Issuer
1023368719	Medicaid	DE	—

Copy-ready billing details

Provider: Onix Silverside LLC
NPI: 1023368719
Taxonomy: 314000000X (Skilled Nursing Facility)
Address: 3322 SILVERSIDE RD, Wilmington, DE, 19810

Providers at this address

NPI	Name	Type	Specialty	Location
1902922677	Robert Disibio	Individual	Medical Physician Assistant	Wilmington, DE
1336612472	Billie Jo Boughter	Individual	Nurse Practitioner	Wilmington, DE
1316779382	Dave Sherwin Woo	Individual	Physical Therapist	Wilmington, DE

Verify this record

Cross-check NPI 1023368719 against the authoritative CMS record: view Onix Silverside LLC on the official NPPES registry .

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.

Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2019-12-18. Verify at npiregistry.cms.hhs.gov.

Where is Onix Silverside LLC located?

The practice location on file with NPPES is in Wilmington, DE.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2019-12-18.