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

Ms. Joan Elizabeth Grussing, LPC-S, LISAC

Mental Health Counselor in Glendale, AZ · enumerated 2012 · practices at Neighborhood Outreach Access To Health.

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

National Provider Identifier

1588937643

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Registry record

Entity type Individual (Type 1)

Name Ms. Joan Elizabeth Grussing

Credential LPC-S, LISAC

Sex Female

Practice address Glendale, AZ, 85304

Phone (480) 882-4545

Fax (602) 409-0499

Enumeration date Feb 20, 2012

Last updated in NPPES Feb 7, 2024

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

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License LPC 11798 (AZ) Primary

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License LISAC 10120 (AZ) Secondary

Other identifiers

Identifier	Type	State	Issuer
428362	Medicaid	AZ	-

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

Is NPI 1588937643 active?

Yes, as of the latest NPPES snapshot, NPI 1588937643 is active (record last updated 2024-02-07).

How do I verify Joan Grussing's NPI record?

Cross-check NPI 1588937643 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Jeffrey Jirak Mental Health Counselor · Glendale, AZ NPI 1063565455 Kara Green Family Nurse Practitioner · Glendale, AZ NPI 1265857791 Danielle Maffetone Mental Health Counselor · Glendale, AZ NPI 1528483575 Neighborhood Outreach Access To Health Federally Qualified Health Center (FQHC) · Glendale, AZ NPI 1629515218 Daniel Davis Internal Medicine Physician · Glendale, AZ NPI 1487187910 Nicole James Family Nurse Practitioner · Glendale, AZ NPI 1053811976 Caraline Risinger Physician Assistant · Glendale, AZ NPI 1346888419 Kaylee De Tranaltes Family Medicine Physician · Glendale, AZ NPI 1336778448

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-02-07.