Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Cassie Sheree Guglielmi, NP

Nurse Practitioner in Aurora, CO · enumerated 2007.

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

National Provider Identifier

1912123738

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Registry record

Entity type Individual (Type 1)

Name Mrs. Cassie Sheree Guglielmi

Credential NP

Sex Female

Practice address 2500 S Havana St, Aurora, CO, 80014

Phone (303) 338-4545

Enumeration date Apr 18, 2007

Last updated in NPPES Jun 17, 2021

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 160222 (CO) Primary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP credential

Other identifiers

Identifier	Type	State	Issuer
27088375	Medicaid	CO	-
P01072952	Other	CO	RR MEDICARE PTAN

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 the NPI number for Cassie Guglielmi?

The National Provider Identifier (NPI) for Cassie Guglielmi is 1912123738, a Type 1 (individual) record in the CMS NPPES registry.

Where does Cassie Guglielmi practice?

The practice location on file with NPPES is in Aurora, CO. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-06-17.