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

Bobbie Koistinen

Contractor in Tucson, AZ · enumerated 2008.

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

National Provider Identifier

1790935864

Verified

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Registry record

Entity type Individual (Type 1)

Name Bobbie Koistinen

Sex Female

Practice address Tucson, AZ, 85710

Phone (520) 721-1887

Enumeration date Sep 25, 2008

Last updated in NPPES Sep 25, 2008

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

Taxonomy & licenses

171W00000X Contractor Other Service Providers Primary

Other identifiers

Identifier	Type	State	Issuer
264058	Other	AZ	PROFESSIONAL FOSTER CARE LICENSE

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

What is the NPI number for Bobbie Koistinen?

The National Provider Identifier (NPI) for Bobbie Koistinen is 1790935864, a Type 1 (individual) record in the CMS NPPES registry.

Where does Bobbie Koistinen practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-09-25.