Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Diana Jean Maier, RD

Health Educator in Milwaukee, WI · enumerated 2018.

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

National Provider Identifier

1740766971

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Registry record

Entity type Individual (Type 1)

Name Diana Jean Maier

Credential RD

Sex Female

Practice address 3237 S 16th St, Milwaukee, WI, 53215

Phone (414) 647-7066

Enumeration date Jul 11, 2018

Last updated in NPPES Jul 11, 2018

Taxonomy & licenses

174H00000X Health Educator Other Service Providers Primary

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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Diana Maier?

Diana Maier is registered in NPPES with the primary taxonomy of Health Educator. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-07-11.