Individual provider Active NPI

Mary Frances Lazar I, PSY.D.

  • Clinical Psychologist
  • Chester, PA
National Provider Identifier
1881623791
Registry record updated Sep 11, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical PsychologistTaxonomy code 103TC0700X
License
PS006421L Issued in PA
Practice address
Neuropsychology Assessment Center at Widener University
One University Place
Chester, PA 19013-5792
Phone
(610) 499-4560
Fax
(610) 499-4649
NPI assigned
Jul 2, 2006
Last updated
Sep 11, 2025By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 11, 2025

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Clinical Neuropsychologist 103G00000X PS006421L PA
Clinical Psychologist 103TC0700X PS006421L PA Primary

Addresses

Primary practice location

Neuropsychology Assessment Center at Widener University
One University Place
Chester, PA 19013-5792

Mailing address

Neuropsychology Assessment Center at Widener University
One University Place
Chester, PA 19013-5792
Phone (610) 499-4560

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

State licenses

LicenseStateTypeSpecialty
PS006421LPAMDClinical Neuropsychologist

Practice roles

OrganizationSpecialtyStatusNew patients
The Neuropsychology Assessment Center at Widener University PastSince Jul 20, 2005 Accepting new patients

Organizations & group practices 1

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1151798400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1881623791",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "NEUROPSYCHOLOGY ASSESSMENT CENTER AT WIDENER UNIVERSITY",
            "address_2": "ONE UNIVERSITY PLACE",
            "city": "CHESTER",
            "state": "PA",
            "postal_code": "190135792",
            "telephone_number": "610-499-4560",
            "fax_number": "610-499-4649"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "NEUROPSYCHOLOGY ASSESSMENT CENTER AT WIDENER UNIVERSITY",
            "address_2": "ONE UNIVERSITY PLACE",
            "city": "CHESTER",
            "state": "PA",
            "postal_code": "190135792",
            "telephone_number": "610-499-4560",
            "fax_number": "610-499-4649"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LAZAR",
        "first_name": "MARY",
        "middle_name": "FRANCES",
        "name_prefix": "Dr.",
        "name_suffix": "I",
        "credential": "PSY.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-07-02",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103G00000X",
            "taxonomy_group": "",
            "desc": "Clinical Neuropsychologist",
            "state": "PA",
            "license": "PS006421L",
            "primary": false
        },
        {
            "code": "103TC0700X",
            "taxonomy_group": "",
            "desc": "Psychologist, Clinical",
            "state": "PA",
            "license": "PS006421L",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Chester, PA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.