Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mrs. Timi Irene Grulke, RDN

Q: What is the NPI number for Timi Grulke?

The National Provider Identifier (NPI) for Timi Grulke is 1417612177, a Type 1 (individual) record in the CMS NPPES registry.

Registered Dietitian in Castle Rock, CO · enumerated 2021.

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

National Provider Identifier

1417612177

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mrs. Timi Irene Grulke

Credential RDN

Sex Female

Practice address Castle Rock, CO, 80109

Phone (303) 523-2438

Enumeration date Nov 7, 2021

Last updated in NPPES Nov 7, 2021

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Timi Grulke practice?

The practice location on file with NPPES is in Castle Rock, CO. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Timi Grulke?

The National Provider Identifier (NPI) for Timi Grulke is 1417612177, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-11-07.