NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mollie Hartwig, SLP

Speech-Language Pathologist in Peshtigo, WI · enumerated 2011 · practices at Tdr, Inc..

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1437430204

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mollie Hartwig
Credential SLP
Sex Female
Practice address 701 Willow St, Peshtigo, WI, 54157
Phone (715) 582-3962
Fax (715) 582-0803
Enumeration date Sep 7, 2011
Last updated in NPPES Sep 7, 2011

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License 3535-154 (WI) Primary
SLP · Speech-Language Pathologist: A licensed clinician treating speech, language, and swallowing disorders. About the SLP 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Mollie Hartwig?
The National Provider Identifier (NPI) for Mollie Hartwig is 1437430204, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mollie Hartwig practice?
The practice location on file with NPPES is in Peshtigo, WI. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-09-07.