Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Tammy S Gilliam, APRN/FNP
Nurse Practitioner in Union, SC · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1770560187
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Registry record
Entity type Individual (Type 1)
Name Tammy S Gilliam
Credential APRN/FNP
Sex Female
Practice address 128 Medical Sciences Dr, Union, SC, 29379
Phone (864) 427-4200
Fax (864) 427-4400
Enumeration date Dec 28, 2005
Last updated in NPPES Aug 6, 2013
Taxonomy & licenses
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License F744 (SC) Primary
APRN · Advanced Practice Registered Nurse: An umbrella credential covering NPs, CRNAs, CNMs, and clinical nurse specialists.
About the APRN credential
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 1770560187 active?
Yes, as of the latest NPPES snapshot, NPI 1770560187 is active (record last updated 2013-08-06).
How do I verify Tammy Gilliam's NPI record?
Cross-check NPI 1770560187 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 2013-08-06.