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LOUIS HIOTIS MD SC
NPI 1083170906
Internal Medicine in Chicago, IL

Active since February 15, 2019
200 S MICHIGAN AVE STE 1400, CHICAGO, IL 60604(312) 922-3815 Get Directions Write a Review

NPPES record last updated: February 15, 2019. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Louis Hiotis Md Sc NPPES

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

LOUIS HIOTIS MD SC (NPI 1083170906) is a healthcare organization registered as an internal medicine in Chicago, Illinois and active in the NPI registry since February 2019. The organization lists Louis Hiotis, President, as its authorized official.

NPPES Registry Identity

NPI1083170906
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameLOUIS HIOTIS MD SC
Location Address200 S MICHIGAN AVE STE 1400Chicago, IL 60604-2426
Mailing Address200 S Michigan Ave Ste 1400Chicago, IL 60604-2426 · (312) 922-3815
Phone(312) 922-3815
Organization SubpartNo
Authorized OfficialLouis HiotisPresident · (312) 922-3815
Enumeration DateFebruary 15, 2019
✔ NPI 1083170906 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.
200 S MICHIGAN AVE STE 1400, Chicago, IL 60604
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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)

Louis Hiotis 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 Louis Hiotis MD Sc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Louis Hiotis, M.D.
Internal Medicine
NPI 1710980339
200 S. MICHIGAN AVENUE #805
Chicago, IL 60604
(312) 922-3815
✔ 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 Louis Hiotis MD Sc's NPI number?

The NPI number for Louis Hiotis MD Sc is 1083170906. It was assigned to this organization in the NPPES registry on February 15, 2019.

Where is Louis Hiotis MD Sc located?

Louis Hiotis MD Sc is located at 200 S Michigan Ave Ste 1400, Chicago, IL 60604. The listed phone number is (312) 922-3815.

What is Louis Hiotis MD Sc's specialty?

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

Is Louis Hiotis MD Sc enrolled in Medicare?

Yes. Louis Hiotis MD Sc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Louis Hiotis MD Sc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Louis Hiotis 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 Louis Hiotis MD Sc was last updated on February 15, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.