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

Mrs. Sarah L Trinajstich, RD, IBCLC

Registered Dietitian in Sparks, NV · enumerated 2012.

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

National Provider Identifier

1558607309

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mrs. Sarah L Trinajstich

Credential RD, IBCLC

Sex Female

Practice address Sparks, NV, 89434

Phone (714) 330-5605

Enumeration date Dec 26, 2012

Last updated in NPPES Feb 12, 2018

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

Taxonomy & licenses

174N00000X Lactation Consultant (Non-RN) Other Service Providers · License L58272 (CA) Secondary

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 39259-DI-0 (NV) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Sarah Trinajstich practice?

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

What is the NPI number for Sarah Trinajstich?

The National Provider Identifier (NPI) for Sarah Trinajstich is 1558607309, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-02-12.