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

Dr. Thomas Mark Harwood, PH. D.

Clinical Psychologist in West Chicago, IL · enumerated 2010 · practices at Center for Cognitive-Behavioral and Prescriptive Psychotherapy, Ltd..

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

National Provider Identifier

1922320159

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Registry record

Entity type Individual (Type 1)

Name Dr. Thomas Mark Harwood

Credential PH. D.

Sex Male

Practice address West Chicago, IL, 60185

Phone (630) 520-0685

Fax (630) 520-0685

Enumeration date Feb 15, 2010

Last updated in NPPES Jul 29, 2011

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

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 071.007550 (IL) 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
12037089	Other	IL	UNIVERSAL PROVIDER DATA SOURCE

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

Where does Thomas Harwood practice?

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

What is the NPI number for Thomas Harwood?

The National Provider Identifier (NPI) for Thomas Harwood is 1922320159, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Center for Cognitive-Behavioral and Prescriptive Psychotherapy, Ltd. Community/Behavioral Health Agency · West Chicago, IL NPI 1922391424

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-07-29.