Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Debra M. Block, PSY.D.

Clinical Psychologist in Northbrook, IL · enumerated 2007.

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

National Provider Identifier

1871624890

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Registry record

Entity type Individual (Type 1)

Name Dr. Debra M. Block

Credential PSY.D.

Sex Female

Practice address 2720 Dundee Rd Ste 210, Northbrook, IL, 60062

Phone (224) 226-5222

Fax (224) 213-7306

Enumeration date Mar 8, 2007

Last updated in NPPES May 31, 2024

Taxonomy & licenses

103TB0200X Cognitive & Behavioral Psychologist Behavioral Health & Social Service Providers · License 071006426 (IL) Secondary

103TH0100X Health Service Psychologist Behavioral Health & Social Service Providers · License 071006426 (IL) Secondary

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 071006426 (IL) Primary

PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD 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

What specialty is Debra Block?

Debra Block is registered in NPPES with the primary taxonomy of Clinical Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-05-31.