Holly Marie Hagen, PSYD

Primary specialty

Clinical NeuropsychologistTaxonomy code 103G00000X

License

071008672 Issued in IL

Practice address

1451 Merchant Dr
Algonquin, IL 60102-5917

Phone

(847) 469-7537

Fax

(847) 469-7540

NPI assigned

Oct 16, 2013

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Other names 1

• Dr. Holly Marie Williams Former name

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, 2011

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Thomson Memory Center LLCGroup PAC ID 7113098278, 13 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Philosophy

State licenses

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

• Thomson Memory Center LLC

  • Clinical Neuropsychologist
  • Algonquin, IL
  • NPI 1124296082
  Medicare reassignment Care Compare group

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

{
    "created_epoch": "1381881600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1758585600000",
    "number": "1932537545",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1451 MERCHANT DR",
            "city": "ALGONQUIN",
            "state": "IL",
            "postal_code": "601025917",
            "telephone_number": "847-469-7537",
            "fax_number": "847-469-7540"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1451 MERCHANT DR",
            "city": "ALGONQUIN",
            "state": "IL",
            "postal_code": "601025917",
            "telephone_number": "847-469-7537",
            "fax_number": "847-469-7540"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2300 N Barrington Rd Ste 105",
            "address_purpose": "LOCATION",
            "city": "Hoffman Estates",
            "state": "IL",
            "postal_code": "601692033",
            "country_code": "US",
            "telephone_number": "847-469-7537",
            "fax_number": "847-469-7540",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "420 Lake Cook Rd Ste 112",
            "address_purpose": "LOCATION",
            "city": "Deerfield",
            "state": "IL",
            "postal_code": "600154914",
            "country_code": "US",
            "telephone_number": "847-469-7537",
            "fax_number": "847-469-7540",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1603 Orrington Ave Ste 600",
            "address_purpose": "LOCATION",
            "city": "Evanston",
            "state": "IL",
            "postal_code": "602013860",
            "country_code": "US",
            "telephone_number": "847-469-7537",
            "fax_number": "847-469-7540",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2604 Dempster St Ste 407B",
            "address_purpose": "LOCATION",
            "city": "Park Ridge",
            "state": "IL",
            "postal_code": "600688428",
            "country_code": "US",
            "telephone_number": "847-469-7537",
            "fax_number": "847-469-7540",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "17W662 Butterfield Rd Ste 302",
            "address_purpose": "LOCATION",
            "city": "Oakbrook Terrace",
            "state": "IL",
            "postal_code": "601814006",
            "country_code": "US",
            "telephone_number": "847-469-7537",
            "fax_number": "847-469-7540",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2551 N Clark St Ste 200",
            "address_purpose": "LOCATION",
            "city": "Chicago",
            "state": "IL",
            "postal_code": "606141798",
            "country_code": "US",
            "telephone_number": "847-469-7537",
            "fax_number": "847-469-7540",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1531 S Grove Ave Unit 105",
            "address_purpose": "LOCATION",
            "city": "Barrington",
            "state": "IL",
            "postal_code": "600105250",
            "country_code": "US",
            "telephone_number": "847-469-7537",
            "fax_number": "847-469-7540",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HAGEN",
        "first_name": "HOLLY",
        "middle_name": "MARIE",
        "name_prefix": "Dr.",
        "credential": "PSYD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2013-10-16",
        "last_updated": "2025-09-23",
        "certification_date": "2025-09-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103G00000X",
            "taxonomy_group": "",
            "desc": "Clinical Neuropsychologist",
            "state": "IL",
            "license": "071008672",
            "primary": true
        },
        {
            "code": "103G00000X",
            "taxonomy_group": "",
            "desc": "Clinical Neuropsychologist",
            "state": "IN",
            "license": "20042676A",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "HOLLY",
            "last_name": "WILLIAMS",
            "middle_name": "MARIE",
            "prefix": "DR.",
            "credential": "PSYD",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Guevara Family Physicians
• Jose L. Guevara, D.O.
• Jose R. Guevara, M.D.
• Madhu Gundavaram, M.D.
• H&R Square PLLC
• Joseph Eugene Haimann, PHARMD
• Joni L Hamilton, MD
• Brandy Hanson, MS, LPC, NCC
• Thomas Anthony Hanson, RPH
• Kelly Hardy, OTR

• Clinical Neuropsychologist in Algonquin, IL
• Providers in Algonquin, IL by specialty
• Clinical Neuropsychologist in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 23, 2025; 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.