Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Diane Marie Shallcross, APRN, FPA, PMHNP-BC

Psychiatric/Mental Health Nurse Practitioner in Saint Charles, IL · enumerated 2021.

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

National Provider Identifier

1629736285

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Registry record

Entity type Individual (Type 1)

Name Ms. Diane Marie Shallcross

Credential APRN, FPA, PMHNP-BC

Sex Female

Practice address 218 State St Ste B, Saint Charles, IL, 60174

Phone (815) 893-9417

Fax (224) 276-7254

Enumeration date Dec 1, 2021

Last updated in NPPES May 1, 2025

Taxonomy & licenses

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 277.003222 (IL) Primary

APRN · Advanced Practice Registered Nurse: An umbrella credential covering NPs, CRNAs, CNMs, and clinical nurse specialists. About the APRN 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 Shallcross practice?

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

What is the NPI number for Diane Shallcross?

The National Provider Identifier (NPI) for Diane Shallcross is 1629736285, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-05-01.