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

Dr. Maria De Lourdes Mattei, PH.D.

Clinical Psychologist in Northampton, MA · enumerated 2007.

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

National Provider Identifier

1083752786

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Registry record

Entity type Individual (Type 1)

Name Dr. Maria De Lourdes Mattei

Credential PH.D.

Sex Female

Practice address Northampton, MA, 01060

Phone (413) 586-8567

Fax (413) 584-7527

Enumeration date Feb 2, 2007

Last updated in NPPES Mar 21, 2017

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 4642 (MA) 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

What is the NPI number for Maria De Lourdes Mattei?

The National Provider Identifier (NPI) for Maria De Lourdes Mattei is 1083752786, a Type 1 (individual) record in the CMS NPPES registry.

Where does Maria De Lourdes Mattei practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-03-21.