Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Nancy E. Derkowski
Registered Dietitian in Waupaca, WI · enumerated 2008.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1801049648
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Registry record
Entity type Individual (Type 1)
Name Nancy E. Derkowski
Sex Female
Practice address 1401 Churchill St, Waupaca, WI, 54981
Phone (715) 258-8131
Enumeration date Oct 24, 2008
Last updated in NPPES Oct 24, 2008
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
What is the NPI number for Nancy Derkowski?
The National Provider Identifier (NPI) for Nancy Derkowski is 1801049648, a Type 1 (individual) record in the CMS NPPES registry.
Where does Nancy Derkowski practice?
The practice location on file with NPPES is in Waupaca, WI. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Extendicare Homes, Inc. Skilled Nursing Facility · Waupaca, WI NPI 1780757872 Robert Lange Occupational Therapist · Waupaca, WI NPI 1891917902 Constance Clausen Physical Therapy Assistant · Waupaca, WI NPI 1609098383 Michelle Waggoner Speech-Language Pathologist · Waupaca, WI NPI 1568684942 Sue Young Occupational Therapist · Waupaca, WI NPI 1477766632 Jennifer Barlow Occupational Therapist · Waupaca, WI NPI 1609089879 Nicole Barton Geriatric Physical Therapist · Waupaca, WI NPI 1235325598 Angela Zubella Occupational Therapist · Waupaca, WI NPI 1538334057
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-10-24.