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

Tessa Kaczor

Q: What is the NPI number for Tessa Kaczor?

The National Provider Identifier (NPI) for Tessa Kaczor is 1639535909, a Type 1 (individual) record in the CMS NPPES registry.

Lactation Consultant (Non-RN) in Boulder, CO · enumerated 2016.

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

National Provider Identifier

1639535909

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Registry record

Entity type Individual (Type 1)

Name Tessa Kaczor

Sex Female

Practice address Boulder, CO, 80304

Phone (720) 537-9286

Enumeration date Jan 2, 2016

Last updated in NPPES Jan 2, 2016

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 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 Tessa Kaczor practice?

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

What is the NPI number for Tessa Kaczor?

The National Provider Identifier (NPI) for Tessa Kaczor is 1639535909, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-01-02.