Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ellyn Kathleen Guinding, RN
Registered Nurse in Fitchburg, MA · enumerated 2020.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1841815800
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Registry record
Entity type Individual (Type 1)
Name Ellyn Kathleen Guinding
Credential RN
Sex Female
Practice address 326 Nichols Rd, Fitchburg, MA, 01420
Phone (978) 878-8100
Enumeration date Jun 15, 2020
Last updated in NPPES Jun 15, 2020
Taxonomy & licenses
RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam.
About the RN 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
What specialty is Ellyn Guinding?
Ellyn Guinding is registered in NPPES with the primary taxonomy of Registered Nurse. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-06-15.