Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Geraldine Marie Holub, PHD

Clinical Psychologist in Winfield, IL · enumerated 2006.

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

National Provider Identifier

1023119245

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Registry record

Entity type Individual (Type 1)

Name Dr. Geraldine Marie Holub

Credential PHD

Sex Female

Practice address 27w291 Geneva Rd, Suite C, Winfield, IL, 60190

Phone (630) 682-0645

Fax (630) 462-7969

Enumeration date Sep 26, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

Other identifiers

Identifier	Type	State	Issuer
278617	Other	-	VALUE OPTIONS
162842	Other	-	COMPSYCH
33582	Other	-	MAGELLAN BEHAVIORAL HLTH
46369	Other	-	CIGNA BEHAVIORAL HEALTH
6166079	Other	-	UNITED HEALTHCARE
5574223	Other	-	AETNA
9266056	Other	-	PHCS PRVT HLTH CARE SERVS
V511	Other	-	EMPIRE BCBS
33582	Other	-	UNICARE
0002283031	Other	-	BLUE CROSS BLUE SHIELD

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.

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Frequently asked questions

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.

What specialty is Geraldine Holub?

Geraldine Holub 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.