Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jennifer Sielaff

Addiction (Substance Use Disorder) Counselor in Casa Grande, AZ · enumerated 2009.

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

National Provider Identifier

1508194945

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Registry record

Entity type Individual (Type 1)

Name Jennifer Sielaff

Sex Female

Practice address 2271 S Peart Rd, Casa Grande, AZ, 85122

Phone (520) 836-1713

Fax (520) 836-4046

Enumeration date Nov 23, 2009

Last updated in NPPES Nov 23, 2009

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 10864 (AZ) Primary

Other identifiers

Identifier	Type	State	Issuer
10864	Other	AZ	LISAC

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 Jennifer Sielaff practice?

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

What is the NPI number for Jennifer Sielaff?

The National Provider Identifier (NPI) for Jennifer Sielaff is 1508194945, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-11-23.