Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Cornerstone Medical Services LLC

Durable Medical Equipment & Medical Supplies in Oxford, CT · enumerated 2006 · authorized official Guy Rubino, Owner.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1952488520

Verified

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Registry record

Entity type Organization (Type 2)

Legal business name Cornerstone Medical Services LLC

Practice address 115 Hurley Rd Ste 4a, Oxford, CT, 06478

Phone (203) 267-6555

Fax (203) 267-6565

Enumeration date Nov 1, 2006

Last updated in NPPES Oct 20, 2009

Taxonomy & classification

332B00000X Durable Medical Equipment & Medical Supplies Suppliers Primary

332BN1400X Nursing Facility Supplies (DME) Suppliers Secondary

332BP3500X Parenteral & Enteral Nutrition Supplies (DME) Suppliers Secondary

332BX2000X Oxygen Equipment & Supplies (DME) Suppliers Secondary

Authorized official

Name Guy Rubino

Title Owner

Phone (203) 267-6555

Other identifiers

Identifier	Type	State	Issuer
004188943	Medicaid	CT	-

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 → Validate an NPI →

Frequently asked questions

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Cornerstone Medical Services LLC?

Cornerstone Medical Services LLC is registered in NPPES as a Durable Medical Equipment & Medical Supplies (its primary provider taxonomy).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-10-20.