Mary Trotty Nickson, PH.D.

Primary specialty

Professional CounselorTaxonomy code 101YP2500X

License

11170 Issued in TX

Practice address

100 Allentown Pkwy
#114
Allen, TX 75002-4200

Phone

(972) 747-0059

NPI assigned

Apr 25, 2007

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 3

Addresses

Other names 1

• Miss Mary Elizabeth Trotty Former name

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

Credentials

Doctor of Philosophy

State licenses

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

{
    "created_epoch": "1177459200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1245459189",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "807 RIDGEMONT DR",
            "city": "ALLEN",
            "state": "TX",
            "postal_code": "750025075",
            "telephone_number": "972-396-1970"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "100 ALLENTOWN PKWY",
            "address_2": "#114",
            "city": "ALLEN",
            "state": "TX",
            "postal_code": "750024200",
            "telephone_number": "972-747-0059"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NICKSON",
        "first_name": "MARY",
        "middle_name": "TROTTY",
        "name_prefix": "Dr.",
        "credential": "PH.D.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2007-04-25",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YP2500X",
            "taxonomy_group": "",
            "desc": "Counselor, Professional",
            "state": "TX",
            "license": "11170",
            "primary": true
        },
        {
            "code": "103TC1900X",
            "taxonomy_group": "",
            "desc": "Psychologist, Counseling",
            "state": "TX",
            "license": "25148",
            "primary": false
        },
        {
            "code": "103TS0200X",
            "taxonomy_group": "",
            "desc": "Psychologist, School",
            "state": "TX",
            "license": "30454",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "MARY",
            "last_name": "TROTTY",
            "middle_name": "ELIZABETH",
            "prefix": "MISS",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Manh Nguyen
• Nicole Kieu Nguyen
• Rachel Nguyen
• Steven Nguyen
• Jennifer Nicholson, MOT, OTR/L, CLT
• Nicole C Hodge MD PA
• Michael John Niederkorn, O.D.
• Michelle Holman Nietert, LPC
• Dipali Kedar Nigudkar, DMD
• Diane Nik, DDS

• Professional Counselor in Allen, TX
• Providers in Allen, TX by specialty
• Professional Counselor in Texas

• 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.