DR. THOMAS R SAK PSYD
NPI 1073090239
Clinical Neuropsychologist in Algonquin, IL

Q: What is Thomas Sak's NPI number?

The NPI number for Thomas Sak is 1073090239. It was assigned to this individual provider in the NPPES registry on July 20, 2018.

Q: What is Thomas Sak's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Thomas Sak 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 10 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.

Active since July 20, 2018PECOS EnrolledAccepts Medicare Assignment

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: August 16, 2026.

Record update history: Nov 20, 2024, Aug 3, 2018, Jul 20, 2018 (3 updates tracked since 2018).

On this page

About Dr. Thomas R Sak Psyd NPPES

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

DR. THOMAS R SAK PSYD (NPI 1073090239) is an individual clinical neuropsychologist in Algonquin, Illinois and active in the NPI registry since July 2018. He is enrolled in Medicare PECOS and is a graduate of Other (2016).

NPPES Registry Identity

NPI1073090239

Entity TypeIndividualMale

Primary Taxonomy103G00000X

Provider Legal NameDR. THOMAS R SAKCredential: 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 2016

Enumeration DateJuly 20, 2018

Last NPPES UpdateSeptember 23, 20253 updates tracked since enumeration

NPPES CertifiedSeptember 23, 2025

✔ NPI 1073090239 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyClinical NeuropsychologistBehavioral Health & Social Service Providers

Taxonomy Code103G00000X

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 ListedPsychologistTaxonomy 103T00000X

1451 MERCHANT DR, Algonquin, IL 60102

Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Thomas R Sak 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 ID446771786

PECOS Enrollment IDI20250304000746

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.

Other Providers at the Same Location NPPES 19

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