Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mary Karls, CMT
Specialist in Madison, WI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1720004781
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Registry record
Entity type Individual (Type 1)
Name Mary Karls
Credential CMT
Sex Female
Practice address 8202 Excelsior Dr, Madison, WI, 53717
Phone (608) 251-4156
Fax (608) 257-3842
Enumeration date Jul 14, 2006
Last updated in NPPES Jul 8, 2007
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 1720004781 active?
Yes, as of the latest NPPES snapshot, NPI 1720004781 is active (record last updated 2007-07-08).
How do I verify Mary Karls's NPI record?
Cross-check NPI 1720004781 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 2007-07-08.