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DR. HOLLY MARIE HAGEN PSYD
NPI 1932537545
Clinical Neuropsychologist in Algonquin, IL

Active since October 16, 2013PECOS 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 23, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 19, 2024, May 16, 2016 (2 updates tracked since 2016).

About Dr. Holly Marie Hagen Psyd NPPES

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

DR. HOLLY MARIE HAGEN PSYD (NPI 1932537545) is an individual clinical neuropsychologist in Algonquin, Illinois, licensed in Illinois (071008672) and active in the NPI registry since October 2013. She is enrolled in Medicare PECOS, maintains 7 additional practice locations, and is a graduate of Other (2011).

NPPES Registry Identity

NPI1932537545
Entity TypeIndividualFemale
Primary Taxonomy103G00000X
Provider Legal NameDR. HOLLY MARIE HAGENCredential: PSYD
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 ProprietorNo
Medical School CMSOtherGraduated 2011
Enumeration DateOctober 16, 2013
Last NPPES UpdateSeptember 23, 20252 updates tracked since enumeration
NPPES CertifiedSeptember 23, 2025
✔ NPI 1932537545 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinical NeuropsychologistBehavioral Health & Social Service Providers
Taxonomy Code103G00000X
Licenses✔ Licensed in IL · 071008672✔ Licensed in IN · 20042676A
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.
1451 MERCHANT DR, Algonquin, IL 60102
Open in Google Maps ↗

Other Names 1

Former Name (1)Dr. Holly Marie Williams Psyd

Secondary Practice Locations 7

Location 1420 Lake Cook Rd Ste 112Deerfield, IL 60015-4914 · Phone (847) 469-7537 · Fax (847) 469-7540
Location 22300 N Barrington Rd Ste 105Hoffman Estates, IL 60169-2033 · Phone (847) 469-7537 · Fax (847) 469-7540
Location 317W662 Butterfield Rd Ste 302Oakbrook Terrace, IL 60181-4006 · Phone (847) 469-7537 · Fax (847) 469-7540
Location 42551 N Clark St Ste 200Chicago, IL 60614-1798 · Phone (847) 469-7537 · Fax (847) 469-7540
Location 51603 Orrington Ave Ste 600Evanston, IL 60201-3860 · Phone (847) 469-7537 · Fax (847) 469-7540
Location 61531 S Grove Ave Unit 105Barrington, IL 60010-5250 · Phone (847) 469-7537 · Fax (847) 469-7540
Location 72604 Dempster St Ste 407BPark Ridge, IL 60068-8428 · 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. Holly Marie Hagen Psyd 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 ID6204062292
PECOS Enrollment IDI20131121001225
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 Holly Hagen 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.

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.
298 services60 patients
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.
297 services60 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.
60 services60 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.
60 services60 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.
60 services60 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.
56 services56 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
Quality67.04
Improvement Activities40

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
1451 MERCHANT DR
ALGONQUIN, IL 60102
McHenry County (847) 469-7537
DR. THOMAS R SAK PSYD
Clinical Neuropsychologist
1451 MERCHANT DR
ALGONQUIN, IL 60102
McHenry County (847) 469-7537
ANTONIO MARTINEZ TLATENCHI PH.D.
Clinical Neuropsychologist
1451 MERCHANT DR
ALGONQUIN, IL 60102
McHenry County (847) 469-7537
THOMSON MEMORY CENTER, PLLC
Clinical Neuropsychologist
1451 MERCHANT DR
ALGONQUIN, IL 60102
McHenry County (847) 469-7537
TAYLOR GRECO PSYD
Clinical Neuropsychologist
1451 MERCHANT DR
ALGONQUIN, IL 60102
McHenry County (847) 469-7537
DR. NICKOLAS ARMSTRONG PSY.D.
Clinical Neuropsychologist
1451 MERCHANT DR
ALGONQUIN, IL 60102
McHenry County (847) 469-7537
DR. ARINA POLEVOY PSY.D.
Clinical Neuropsychologist
1451 MERCHANT DR
ALGONQUIN, IL 60102
McHenry County (847) 469-7537
HEATHER PATERSON MA, LPC
Counselor
1451 MERCHANT DR
ALGONQUIN, IL 60102
McHenry County (847) 469-7537

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Holly Hagen's NPI number?

The NPI number for Holly Hagen is 1932537545. It was assigned to this individual provider in the NPPES registry on October 16, 2013. The provider is also known as Dr. Holly Marie Williams Psyd.

Where is Holly Hagen located?

Holly Hagen practices at 1451 Merchant Dr, Algonquin, IL 60102. The listed phone number is (847) 469-7537.

What is Holly Hagen's specialty?

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

Is Holly Hagen enrolled in Medicare?

Yes. Holly Hagen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Holly Hagen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Holly Hagen reassigns Medicare benefits to Thomson Memory Center, PLLC (Algonquin, IL). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Holly Hagen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Holly Hagen was last updated on September 23, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.