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ARTHUR L OSTROWSKI MD SC
NPI 1518156280
Internal Medicine in Barrington, IL

Active since October 18, 2007
800 FOX GLN, BARRINGTON, IL 60010(847) 382-5850(847) 382-5852 Get Directions Write a Review

NPPES record last updated: October 18, 2007. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Arthur L Ostrowski Md Sc NPPES

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

ARTHUR L OSTROWSKI MD SC (NPI 1518156280) is a healthcare organization registered as an internal medicine in Barrington, Illinois and active in the NPI registry since October 2007. The organization lists Arthur Ostrowski, President, as its authorized official.

NPPES Registry Identity

NPI1518156280
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameARTHUR L OSTROWSKI MD SC
Location Address800 FOX GLNBarrington, IL 60010-1860
Mailing Address800 Fox GlnBarrington, IL 60010-1860 · (847) 382-5850 · Fax (847) 382-5852
Phone(847) 382-5850
Fax(847) 382-5852
Organization SubpartNo
Authorized OfficialArthur OstrowskiPresident · (847) 382-5850
Enumeration DateOctober 18, 2007
✔ NPI 1518156280 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
800 FOX GLN, Barrington, IL 60010
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Other Identifiers 3

Medicare UPINE64531IL
Medicare PIN211615IL
Medicare UPINE49451IL

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 MULTIPLE 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)

Arthur L Ostrowski Md Sc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Arthur L Ostrowski MD Sc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Arthur Ostrowski, M.D.
Internal Medicine
NPI 1740257062
800 FOX GLN
Barrington, IL 60010
(847) 382-5850
✔ PECOS✔ Accepts MedicareSame address

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 Arthur L Ostrowski MD Sc's NPI number?

The NPI number for Arthur L Ostrowski MD Sc is 1518156280. It was assigned to this organization in the NPPES registry on October 18, 2007.

Where is Arthur L Ostrowski MD Sc located?

Arthur L Ostrowski MD Sc is located at 800 Fox Gln, Barrington, IL 60010. The listed phone number is (847) 382-5850.

What is Arthur L Ostrowski MD Sc's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Arthur L Ostrowski MD Sc enrolled in Medicare?

Yes. Arthur L Ostrowski MD Sc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Arthur L Ostrowski MD Sc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Arthur L Ostrowski MD Sc. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Arthur L Ostrowski MD Sc was last updated on October 18, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.