Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Diane Fischer, CRNA

Certified Registered Nurse Anesthetist in Billings, MT · enumerated 2006.

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

National Provider Identifier

1134219579

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Registry record

Entity type Individual (Type 1)

Name Diane Fischer

Credential CRNA

Sex Female

Practice address 940 N 30th St, Billings, MT, 59101

Phone (406) 248-7186

Enumeration date Oct 14, 2006

Last updated in NPPES Jan 10, 2013

Taxonomy & licenses

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License RN14162 (MT) 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 Diane Fischer practice?

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

What is the NPI number for Diane Fischer?

The National Provider Identifier (NPI) for Diane Fischer is 1134219579, 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 2013-01-10.