Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Heather Stephanie Mcmillen, CRNA

Certified Registered Nurse Anesthetist in Ballwin, MO · enumerated 2009 · practices at Waai Mobile Anesthesiology, LLC.

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

National Provider Identifier

1366770117

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Registry record

Entity type Individual (Type 1)

Name Heather Stephanie Mcmillen

Credential CRNA

Sex Female

Practice address 339 Consort Dr, Ballwin, MO, 63011

Phone (503) 851-7603

Enumeration date Dec 4, 2009

Last updated in NPPES Feb 14, 2013

Taxonomy & licenses

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 089666 (MO) Primary

CRNA · Certified Registered Nurse Anesthetist: An advanced practice nurse specializing in anesthesia care. About the CRNA 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 Heather Mcmillen practice?

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

What is the NPI number for Heather Mcmillen?

The National Provider Identifier (NPI) for Heather Mcmillen is 1366770117, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-02-14.