Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark David Hassan, PH.D.

Q: What is the NPI number for Mark Hassan?

The National Provider Identifier (NPI) for Mark Hassan is 1013093459, a Type 1 (individual) record in the CMS NPPES registry.

Psychoanalysis Psychologist in Alhambra, CA · enumerated 2006.

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

National Provider Identifier

1013093459

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark David Hassan

Credential PH.D.

Sex Male

Practice address 1961 W Huntington Dr Ste 202, Alhambra, CA, 91801

Phone (626) 458-5444

Fax (626) 458-0679

Enumeration date Oct 28, 2006

Last updated in NPPES Sep 21, 2009

Taxonomy & licenses

103TP0814X Psychoanalysis Psychologist Behavioral Health & Social Service Providers · License PSY 5298 (CA) Primary

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

Where does Mark Hassan practice?

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

What is the NPI number for Mark Hassan?

The National Provider Identifier (NPI) for Mark Hassan is 1013093459, 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 2009-09-21.