Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Mary Joanne Miller, LCSW

Q: What is the NPI number for Mary Miller?

The National Provider Identifier (NPI) for Mary Miller is 1447225321, a Type 1 (individual) record in the CMS NPPES registry.

Social Worker in Park Ridge, IL · enumerated 2006.

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

National Provider Identifier

1447225321

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Registry record

Entity type Individual (Type 1)

Name Ms. Mary Joanne Miller

Credential LCSW

Sex Female

Practice address 444 N Northwest Hwy, 145, Park Ridge, IL, 60068

Phone (847) 685-9900

Fax (847) 685-6390

Enumeration date Feb 22, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW 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 Mary Miller practice?

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

What is the NPI number for Mary Miller?

The National Provider Identifier (NPI) for Mary Miller is 1447225321, 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 2007-07-08.