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Thomas Nielsen

Psychologist • Naperville, IL

Active NPI 1558090340 Individual Practitioner Male Practitioner
Practice location in NPPES

1952 Mcdowell Rd, Suite 305
Naperville, IL 60563

Call 6306891022 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

1952 Mcdowell Rd
Suite 305

Naperville, IL 60563

Telephone 6306891022
Organization at the Same NPPES Address or Phone
Advanced Behavioral Health Services Llc Facility NPI 1447545579

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

NPI first issued

2022

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Medicare assignment not listed

CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Compared with the same specialty in Naperville and Illinois

27 active clinicians are listed under Psychologist with a practice address in Naperville, IL (1,011 in Illinois).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Naperville

7.4% of these 27 clinicians have the CMS telehealth indicator.

22.2% of these 27 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo · Report an error.

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2022-06-07
Psychologist Primary Specialty

NUCC Taxonomy Code: 103T00000X

A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Illinois Department of Financial and Professional Regulation.
Look Up on State Board Site

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

11 listed
Nicole Bowers , PA-C

Physician Assistant

NPI 1942841499

Physician Assistant (Certified)

Anthony Coluzzi , PA-C

Physician Assistant

NPI 1457068405

Physician Assistant (Certified)

Patricia Craft , PA-C

Physician Assistant

NPI 1972133031

Physician Assistant (Certified)

Zachary Kuenstle , PA-C

Physician Assistant

NPI 1871268573

Physician Assistant (Certified)

Danielle Lavin , PA-C

Physician Assistant

NPI 1881067999

Physician Assistant (Certified)

Dr. Fareha Mir , MD

Psychiatry & Neurology - Child & Adolescent Psychiatry

NPI 1437648797

Doctor of Medicine (M.D.)

Career & Practice History

NPI enumerated June 07, 2022.

No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from June 2022 to August 2026.

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NPI Administrative Meta

NPI Number: 1558090340
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: June 07, 2022
Last Update: June 07, 2022
Sole Proprietor: No

Other Psychologists in Naperville

Healthcare providers in Naperville

Mailing Address

1952 Mcdowell Rd, Suite 305

Naperville, IL 60563

Phone: 6306891022

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.