Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Amy Lynn Mattson, R.N.
Registered Nurse in Portage, WI · enumerated 2017.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1962947515
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Registry record
Entity type Individual (Type 1)
Name Amy Lynn Mattson
Credential R.N.
Sex Female
Practice address 322 Dewitt St, Portage, WI, 53901
Phone (608) 280-2700
Enumeration date Jan 5, 2017
Last updated in NPPES Jan 5, 2017
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
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.
What specialty is Amy Mattson?
Amy Mattson 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.
Other providers at this practice address
Browse all → Kristin Ranum Clinical Social Worker · Portage, WI NPI 1952654162 Kylie Taylor Mental Health Counselor · Portage, WI NPI 1699114611 Dawn Mueller Case Manager/Care Coordinator · Portage, WI NPI 1437519097 Susan Mertely Registered Nurse · Portage, WI NPI 1336683580 Theresa Tonn Case Manager/Care Coordinator · Portage, WI NPI 1295273068 Jessica Sailor Case Manager/Care Coordinator · Portage, WI NPI 1558896654 Lindsay Woodbridge Professional Counselor · Portage, WI NPI 1649705740 Stacy Carlson Professional Counselor · Portage, WI NPI 1659890416
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-01-05.