Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Tiffany Marie Guglielmelli, FNP-BC
Registered Nurse in Arlington, VA · enumerated 2015.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1346618733
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Registry record
Entity type Individual (Type 1)
Name Tiffany Marie Guglielmelli
Credential FNP-BC
Sex Female
Practice address 1635 N George Mason Dr Ste 480, Arlington, VA, 22205
Phone (703) 248-0111
Fax (703) 248-0046
Enumeration date Sep 2, 2015
Last updated in NPPES Dec 22, 2023
Taxonomy & licenses
363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AC001605 (MD) Secondary
363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 0024183804 (VA) Secondary
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.
Frequently asked questions
Is NPI 1346618733 active?
Yes, as of the latest NPPES snapshot, NPI 1346618733 is active (record last updated 2023-12-22).
How do I verify Tiffany Guglielmelli's NPI record?
Cross-check NPI 1346618733 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-12-22.