Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Advanced Psychology Services, LLC

Psychologist in Chicago, IL · enumerated 2021 · authorized official Leslie Crea-Kammerer, Owner.

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

National Provider Identifier

1578231676

Verified

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Registry record

Entity type Organization (Type 2)

Legal business name Advanced Psychology Services, LLC

Practice address 2835 N Sheffield Ave Ste 310, Chicago, IL, 60657

Phone (773) 234-0695

Enumeration date Sep 2, 2021

Last updated in NPPES May 14, 2024

Taxonomy & classification

103G00000X Clinical Neuropsychologist Behavioral Health & Social Service Providers Secondary

103T00000X Psychologist Behavioral Health & Social Service Providers Primary

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers Secondary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

Authorized official

Name Leslie Crea-Kammerer

Title Owner

Phone (096) 221-4863

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 a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Advanced Psychology Services, LLC?

Advanced Psychology Services, LLC is registered in NPPES as a Psychologist (its primary provider taxonomy).

Providers at this address

Browse all →

Studio for Change Clinical Psychologist · Chicago, IL NPI 1114180148 Leslie Crea-Kammerer Psychologist · Chicago, IL NPI 1831494186 Eric Bjorlin Clinical Social Worker · Chicago, IL NPI 1063994697 Anna Martinez-Snyder Clinical Child & Adolescent Psychologist · Chicago, IL NPI 1558913160 Lauren Stewart Mental Health Counselor · Chicago, IL NPI 1154095636 Grace Tiedt Student in an Organized Health Care Education/Training Program · Chicago, IL NPI 1235969114 Rachel Richardson Mental Health Counselor · Chicago, IL NPI 1356164693

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-05-14.