Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
John Vendelboe Nielsen, RD
Registered Dietitian in Ankeny, IA · enumerated 2020.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1083231609
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name John Vendelboe Nielsen
Credential RD
Sex Male
Practice address 507 Nw 10th St, Ankeny, IA, 50023
Phone (515) 822-2639
Enumeration date Jun 30, 2020
Last updated in NPPES Jun 30, 2020
Taxonomy & licenses
RD · Registered Dietitian: A nutrition professional credentialed by the Commission on Dietetic Registration.
About the RD 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.
Frequently asked questions
Where does John Nielsen practice?
The practice location on file with NPPES is in Ankeny, IA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for John Nielsen?
The National Provider Identifier (NPI) for John Nielsen is 1083231609, a Type 1 (individual) record in the CMS NPPES registry.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-06-30.