Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Marla Mattson, RDH
Dental Hygienist in Ashland, WI · enumerated 2023.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1598534265
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Registry record
Entity type Individual (Type 1)
Name Marla Mattson
Credential RDH
Sex Female
Practice address 300 Main St W, Ashland, WI, 54806
Phone (715) 685-2200
Enumeration date Dec 22, 2023
Last updated in NPPES Dec 22, 2023
Taxonomy & licenses
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 1598534265 active?
Yes, as of the latest NPPES snapshot, NPI 1598534265 is active (record last updated 2023-12-22).
How do I verify Marla Mattson's NPI record?
Cross-check NPI 1598534265 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
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-12-22.