Individual provider Active NPI

Mark D. Lessard, PH.D.

  • Clinical Psychologist
  • Fort Drum, NY
National Provider Identifier
1679533673
Registry record updated Oct 20, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical PsychologistTaxonomy code 103TC0700X
License
2104-057 Issued in WI
Practice address
Ebh02
4TH Armored Drive
Fort Drum, NY 13602
Phone
(315) 772-6703
NPI assigned
Mar 24, 2006
Last updated
Oct 20, 2025By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Oct 20, 2025

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Clinical Psychologist 103TC0700X 2104-057 WI Primary
Clinical Psychologist 103TC0700X 3-1940 TX
Clinical Psychologist 103TC0700X 725 VT

Addresses

Primary practice location

Ebh02
4TH Armored Drive
Fort Drum, NY 13602

Mailing address

Ebh02
4TH Armored Drive
Fort Drum, NY 13602
Phone (315) 772-6703

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)
Not enrolled
Credentials
Doctor of Philosophy

State licenses

LicenseStateTypeSpecialty
3-1940TXMDClinical Psychologist
2104-057WIMDClinical Psychologist
725VTMDPediatric Dentist

NPI Registry JSON

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

{
    "created_epoch": "1143158400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1760918400000",
    "number": "1679533673",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "EBH02",
            "address_2": "4TH ARMORED DRIVE",
            "city": "FORT DRUM",
            "state": "NY",
            "postal_code": "13602",
            "telephone_number": "315-772-6703"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "EBH02",
            "address_2": "4TH ARMORED DRIVE",
            "city": "FORT DRUM",
            "state": "NY",
            "postal_code": "13602",
            "telephone_number": "315-772-6703"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LESSARD",
        "first_name": "MARK",
        "middle_name": "D.",
        "name_prefix": "Dr.",
        "credential": "PH.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-03-24",
        "last_updated": "2025-10-20",
        "certification_date": "2025-10-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103TC0700X",
            "taxonomy_group": "",
            "desc": "Psychologist, Clinical",
            "state": "WI",
            "license": "2104-057",
            "primary": true
        },
        {
            "code": "103TC0700X",
            "taxonomy_group": "",
            "desc": "Psychologist, Clinical",
            "state": "TX",
            "license": "3-1940",
            "primary": false
        },
        {
            "code": "103TC0700X",
            "taxonomy_group": "",
            "desc": "Psychologist, Clinical",
            "state": "VT",
            "license": "725",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Fort Drum, NY

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 20, 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.