Justyn Gillen

Primary specialty

Addiction (Substance Use Disorder) CounselorTaxonomy code 101YA0400X

Practice address

329 S Alcott St
Denver, CO 80219-3014

Phone

(720) 545-8422

NPI assigned

Sep 30, 2026

Last updated

Sep 30, 2026By the provider in NPPES

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

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

{
    "created_epoch": "1790726400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1790726400000",
    "number": "1487568267",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "10562 CHERRYBROOK CIR",
            "city": "HIGHLANDS RANCH",
            "state": "CO",
            "postal_code": "801265588",
            "telephone_number": "720-545-8422"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "329 S ALCOTT ST",
            "city": "DENVER",
            "state": "CO",
            "postal_code": "802193014",
            "telephone_number": "720-545-8422"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GILLEN",
        "first_name": "JUSTYN",
        "name_prefix": "Mr.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2026-09-30",
        "last_updated": "2026-09-30",
        "certification_date": "2026-09-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YA0400X",
            "taxonomy_group": "",
            "desc": "Counselor, Addiction (Substance Use Disorder)",
            "state": "NU",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Laura Gill, PT
• Sarena Kaur Gill, MD
• Shannon Gill, IBCLC
• Wendy Parkinson Gill, MD
• Hannah Gillach
• Erica Jean Gillesby, CNM
• Aftin Marie Gillespie, LPC
• Caitlin Marie Gillespie, B.A.
• Elizabeth Jo Gillespie, MD
• Evan S Gillespie, DO

• Addiction (Substance Use Disorder) Counselor in Denver, CO
• Providers in Denver, CO by specialty
• Addiction (Substance Use Disorder) Counselor in Colorado

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 30, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.

Verify at the official NPI Registry.