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IRINA K. HARAG, M.D., LTD
NPI 1225158322
Specialist in Buffalo Grove, IL

Active since March 30, 2007
150 W HALF DAY RD, SUITE 101, BUFFALO GROVE, IL 60089(847) 821-1070 Get Directions Write a Review

NPPES record last updated: August 22, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Irina K. Harag, M.d., Ltd NPPES

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

IRINA K. HARAG, M.D., LTD (NPI 1225158322) is a healthcare organization registered as a specialist in Buffalo Grove, Illinois and active in the NPI registry since March 2007. The organization lists Igor Harag, Manager, as its authorized official.

NPPES Registry Identity

NPI1225158322
Entity TypeOrganization
Primary Taxonomy174400000X
Legal Business NameIRINA K. HARAG, M.D., LTD
Location Address150 W HALF DAY RD, SUITE 101Buffalo Grove, IL 60089-6591
Mailing Address150 W Half Day Rd, Suite 101Buffalo Grove, IL 60089-6591
Phone(847) 821-1070
Organization SubpartNo
Authorized OfficialIgor HaragManager · (847) 821-1070
Enumeration DateMarch 30, 2007
Last NPPES UpdateAugust 22, 2020
✔ NPI 1225158322 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
150 W HALF DAY RD, Buffalo Grove, IL 60089
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Irina K. Harag, M.d., Ltd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

2

Medicare enrollment records show 2 clinicians reassign Medicare billing to Irina K. Harag, M.D., Ltd, which bills Medicare for the services they deliver. Of these, 1 practice within 10 miles. They are listed nearest first.

Clinicians, nearest first (2)

Irina Harag, M.D.
Family Practice
NPI 1851393334
150 W HALF DAY RD SUITE 101
Buffalo Grove, IL 60089
(847) 821-1070
✔ PECOS✔ Accepts Medicare0.1 mi
Zivile Calderon, FNP
Nurse Practitioner
NPI 1083005268
840 W IRVING PARK RD STE 301
Chicago, IL 60613
(773) 975-3269
✔ PECOS✔ Accepts Medicare23 mi

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

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 Irina K. Harag, M.D., Ltd's NPI number?

The NPI number for Irina K. Harag, M.D., Ltd is 1225158322. It was assigned to this organization in the NPPES registry on March 30, 2007.

Where is Irina K. Harag, M.D., Ltd located?

Irina K. Harag, M.D., Ltd is located at 150 W Half Day Rd Suite 101, Buffalo Grove, IL 60089. The listed phone number is (847) 821-1070.

What is Irina K. Harag, M.D., Ltd's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Irina K. Harag, M.D., Ltd enrolled in Medicare?

Yes. Irina K. Harag, M.D., Ltd is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Irina K. Harag, M.D., Ltd?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians reassign their Medicare billing to Irina K. Harag, M.D., Ltd, in Family Practice and Nurse Practitioner. A 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 the clinician's services. Of these, 1 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Irina K. Harag, M.D., Ltd was last updated on August 22, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years 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.