Gary R Dec, PSY.D.

Primary specialty

Clinical PsychologistTaxonomy code 103TC0700X

License

071-003329 Issued in IL

Practice address

1S115 Gardener Way
Winfield, IL 60190-2802

Phone

(630) 470-0237

NPI assigned

Nov 6, 2006

Last updated

Feb 9, 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

Enrolled in IL

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: No
• Power mobility devices: No
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Clinical Psychologist

Education

Other, 1984

Medicare assignment

May accept Medicare assignment

Telehealth

Offers telehealth services

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Locations

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.

• Gary Dec and Associates, LLC

  • Clinical Psychologist
  • Winfield, IL
  • NPI 1477840304
  Medicare reassignment NPD Authorized official

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

{
    "created_epoch": "1162771200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770595200000",
    "number": "1528137684",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1S115 GARDENER WAY",
            "city": "WINFIELD",
            "state": "IL",
            "postal_code": "601902802",
            "telephone_number": "630-470-0237"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1S115 GARDENER WAY",
            "city": "WINFIELD",
            "state": "IL",
            "postal_code": "601902802",
            "telephone_number": "630-470-0237"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DEC",
        "first_name": "GARY",
        "middle_name": "R",
        "name_prefix": "Dr.",
        "credential": "PSY.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-11-06",
        "last_updated": "2026-02-09",
        "certification_date": "2026-02-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103TC0700X",
            "taxonomy_group": "",
            "desc": "Psychologist, Clinical",
            "state": "IL",
            "license": "071-003329",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Daniel a. Oliver, DDS
• Gretchen Kathleen Daumen, MS, ATC
• Lee Michael De Dore, PA
• Josephine De Lira, LCSW
• Ryan Lee Debrock, APRN, CNP
• Ernest F Dejesus, MD
• Jennifer Anne Regan Delacruz, MD
• Kristie Lynn Slivka Delaney, M.D.
• David Delapp, DO
• Melody Joy Derrick, M.D.

• Clinical Psychologist in Winfield, IL
• Providers in Winfield, IL by specialty
• Clinical Psychologist in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 9, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.