Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Karen Ann Wittmer, OTR
Occupational Therapist in Ripon, WI · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1881896801
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Registry record
Entity type Individual (Type 1)
Name Mrs. Karen Ann Wittmer
Credential OTR
Sex Female
Practice address 50 Wolverton Ave, Ripon, WI, 54971
Phone (920) 748-5638
Enumeration date Jun 1, 2007
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 3745-026 (WI) Primary
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
Where does Karen Wittmer practice?
The practice location on file with NPPES is in Ripon, WI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Karen Wittmer?
The National Provider Identifier (NPI) for Karen Wittmer is 1881896801, a Type 1 (individual) record in the CMS NPPES registry.
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.