Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. NICKOLAS ARMSTRONG PSY.D.
NPI 1205443975
Clinical Neuropsychologist in Algonquin, IL

Q: What is Nickolas Armstrong's NPI number?

The NPI number for Nickolas Armstrong is 1205443975. It was assigned to this individual provider in the NPPES registry on September 28, 2020.

Q: What is Nickolas Armstrong's specialty?

The primary specialty registered for this NPI is Clinical Neuropsychologist with taxonomy code 103G00000X.

Active since September 28, 2020PECOS EnrolledAccepts Medicare Assignment

83.52/100

CMS Quality Rating

1451 MERCHANT DR, ALGONQUIN, IL 60102(847) 469-7537(847) 469-7540 Get Directions Write a Review

NPPES record last updated: September 21, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 21, 2026, Nov 21, 2024, Apr 15, 2021 and 1 more (4 updates tracked since 2020).

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About Dr. Nickolas Armstrong Psy.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. NICKOLAS ARMSTRONG PSY.D. (NPI 1205443975) is an individual clinical neuropsychologist in Algonquin, Illinois, licensed in Illinois (071.010550) and active in the NPI registry since September 2020. He is enrolled in Medicare PECOS, maintains 7 additional practice locations, and is a graduate of Other (2018).

NPPES Registry Identity

NPI1205443975

Entity TypeIndividualMale

Primary Taxonomy103G00000X

Provider Legal NameDR. NICKOLAS ARMSTRONGCredential: PSY.D.

Location Address1451 MERCHANT DRAlgonquin, IL 60102-5917

Mailing Address1451 Merchant DrAlgonquin, IL 60102-5917 · (847) 469-7537 · Fax (847) 469-7540

Phone(847) 469-7537

Fax(847) 469-7540

Sole ProprietorYes

Medical School CMSOtherGraduated 2018

Enumeration DateSeptember 28, 2020

Last NPPES UpdateSeptember 21, 20264 updates tracked since enumeration

NPPES CertifiedSeptember 21, 2026

✔ NPI 1205443975 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyClinical NeuropsychologistBehavioral Health & Social Service Providers

Taxonomy Code103G00000X

License✔ Licensed in IL · 071.010550

Definition

A clinical psychologist who applies principles of assessment and intervention based upon the scientific study of human behavior as it relates to normal and abnormal functioning of the central nervous system. The specialty is dedicated to enhancing the understanding of brain-behavior relationships and the application of such knowledge to human problems.

Also ListedPsychologist · ClinicalTaxonomy 103TC0700X · License 100313 (IA)

1451 MERCHANT DR, Algonquin, IL 60102

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Secondary Practice Locations 7

Location 11531 S Grove Ave Unit 105Barrington, IL 60010-5250 · Phone (847) 469-7537 · Fax (847) 469-7540

Location 22551 N Clark St Ste 200Chicago, IL 60614-1798 · Phone (847) 469-7537 · Fax (847) 469-7540

Location 33701 Commercial Ave Ste 9Northbrook, IL 60062-1830 · Phone (847) 469-7537 · Fax (847) 469-7540

Location 42604 Dempster St Ste 407BPark Ridge, IL 60068-8428 · Phone (847) 469-7537 · Fax (847) 469-7540

Location 5636 Church St Ste 419Evanston, IL 60201-4580 · Phone (847) 469-7537 · Fax (847) 469-7540

Location 617W662 Butterfield Rd Ste 302Oakbrook Terrace, IL 60181-4006 · Phone (847) 469-7537 · Fax (847) 469-7540

Location 72300 N Barrington Rd Ste 105Hoffman Estates, IL 60169-2033 · Phone (847) 469-7537 · Fax (847) 469-7540

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Nickolas Armstrong Psy.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID749669828

PECOS Enrollment IDI20220621000052

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Nickolas Armstrong reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Thomson Memory Center, PLLC

Same address

Clinical Neuropsychologist

1451 MERCHANT DR
Algonquin, IL 60102

Reassigned Medicare billing, Illinois enrollment
14 clinicians in this Medicare group

NPI 1124296082 (847) 469-7537

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Evaluation of neuropsychological test, each additional hour 96133

This service involves further evaluation of your neuropsychological test results beyond the initial hour. It helps to understand your cognitive functioning better, focusing on areas like memory, attention, and problem-solving skills.

165 services33 patients

Administration of psychological or neuropsychological test by technician, each additional 30 minutes 96139

This service involves a technician administering additional psychological or neuropsychological testing. Each session lasts for an extra 30 minutes. These tests assess cognitive abilities, such as memory, attention, and problem-solving skills, to aid in diagnosing or monitoring mental health conditions.

165 services33 patients

Psychotherapy, 1 hour 90837

Psychotherapy is a therapeutic interaction or treatment between a trained professional and a patient. In a 1-hour session, you'll talk about your feelings, thoughts, and behaviors to help identify and manage mental health issues. This process aids in personal growth, healing, and improved well-being.

34 services33 patients

Psychiatric diagnostic evaluation 90791

A psychiatric diagnostic evaluation is a thorough assessment used to identify any mental health conditions you may have. It involves a detailed discussion about your symptoms, thoughts, feelings and behavior patterns. Your medical history and family's mental health history are also considered.

33 services33 patients

Evaluation of neuropsychological test, first hour 96132

An evaluation of neuropsychological tests is a process to assess your brain's function. It involves tasks designed to measure cognitive abilities such as memory, attention, problem-solving, and language skills. The first hour involves initial testing and observation.

33 services33 patients

Administration of psychological or neuropsychological test by technician, first 30 minutes 96138

This procedure involves a trained technician administering a psychological or neuropsychological test. It's a process that assesses your mental function and behavior. The initial session will last 30 minutes. The aim is to understand your cognitive abilities better.

33 services33 patients

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

83.52/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

67.04

Improvement Activities

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. CHRISTINA JOY BLODGETT PH.D.

Clinical Neuropsychologist