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NATHAN PATRICK HORVAT MD
NPI 1407558877
Internal Medicine - Critical Care Medicine in Chicago, IL

Active since March 20, 2023PECOS Enrolled
600 S PAULINA ST STE 403, CHICAGO, IL 60612(312) 942-5000 Get Directions Write a Review

NPPES record last updated: May 7, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: May 7, 2026, May 30, 2023, Mar 20, 2023 (3 updates tracked since 2023).

About Nathan Patrick Horvat Md NPPES

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

NATHAN PATRICK HORVAT MD (NPI 1407558877) is an individual critical care medicine provider in Chicago, Illinois, licensed in Illinois (036.179732) and active in the NPI registry since March 2023. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1407558877
Entity TypeIndividualMale
Primary Taxonomy207RC0200X
Provider Legal NameNATHAN PATRICK HORVATCredential: MD
Location Address600 S PAULINA ST STE 403Chicago, IL 60612-3806
Mailing Address600 S Paulina St Ste 403Chicago, IL 60612-3806
Phone(312) 942-5000
Sole ProprietorNo
Enumeration DateMarch 20, 2023
Last NPPES UpdateMay 7, 20263 updates tracked since enumeration
NPPES CertifiedMay 7, 2026
✔ NPI 1407558877 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

★ Primary SpecialtyInternal Medicine · Critical Care MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RC0200X
License✔ Licensed in IL · 036.179732
Definition
An internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.
Also ListedInternal MedicineTaxonomy 207R00000X · License 125.082224 (IL)
Also ListedInternal Medicine · Pulmonary DiseaseTaxonomy 207RP1001X · License 036.179732 (IL)
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
600 S PAULINA ST STE 403, Chicago, IL 60612
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Nathan Patrick Horvat Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60612 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$138.86 typical visit price
range $60.08 – $183.39
Typical copayment $34.71 (range $15.02 – $45.84)
Most-billed visit code 99204
Established Patient
$105.70 typical visit price
range $18.97 – $148.12
Typical copayment $26.42 (range $4.74 – $37.03)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

ROHAN PISHARODY MD
Psychiatry & Neurology (Neurology)
600 S PAULINA ST STE 403
CHICAGO, IL 60612
Cook County (312) 942-5495
SAMUEL JOHNSON DO
Anesthesiology
600 S PAULINA ST STE 403
CHICAGO, IL 60612
Cook County (312) 942-3134
KAYLA HALL MD
Emergency Medicine
600 S PAULINA ST STE 403
CHICAGO, IL 60612
Cook County (312) 942-5495
RICODEM NAUDEL DESIR MD
Student in an Organized Health Care Education/Training Program
600 S PAULINA ST STE 403
CHICAGO, IL 60612
Cook County (312) 942-7100
JANE EDMUNDS
Internal Medicine
600 S PAULINA ST STE 403
CHICAGO, IL 60612
Cook County (312) 942-7100
ALEXANDER PAUL SUN MD
Surgery
600 S PAULINA ST STE 403
CHICAGO, IL 60612
Cook County (312) 942-7100
IAN KOLATA
Anesthesiology
600 S PAULINA ST STE 403
CHICAGO, IL 60612
Cook County (312) 942-7100
ELIZABETH EVANS M.D.
Internal Medicine (Cardiovascular Disease)
600 S PAULINA ST STE 403
CHICAGO, IL 60612
Cook County (312) 942-5000

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 Nathan Horvat's NPI number?

The NPI number for Nathan Horvat is 1407558877. It was assigned to this individual provider in the NPPES registry on March 20, 2023.

Where is Nathan Horvat located?

Nathan Horvat practices at 600 S Paulina St Ste 403, Chicago, IL 60612. The listed phone number is (312) 942-5000.

What is Nathan Horvat's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.

Is Nathan Horvat enrolled in Medicare?

Yes. Nathan Horvat is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Nathan Horvat was last updated on May 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.