Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Paul A Hasak, PH.D.

Q: What is the NPI number for Paul Hasak?

The National Provider Identifier (NPI) for Paul Hasak is 1356324099, a Type 1 (individual) record in the CMS NPPES registry.

Clinical Psychologist in Saint Louis, MO · enumerated 2005.

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

National Provider Identifier

1356324099

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Registry record

Entity type Individual (Type 1)

Name Paul A Hasak

Credential PH.D.

Sex Male

Practice address 777 S New Ballas Rd, Suite 331e, Saint Louis, MO, 63141

Phone (314) 569-0655

Fax (314) 569-0605

Enumeration date Nov 28, 2005

Last updated in NPPES Jul 9, 2007

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License R0022 (MO) 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
493201610	Medicaid	MO	-

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

Where does Paul Hasak practice?

The practice location on file with NPPES is in Saint Louis, MO. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Paul Hasak?

The National Provider Identifier (NPI) for Paul Hasak is 1356324099, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.