Nathan Horvat, MD
NPI 1407558877 · Critical Care Medicine (Internal Medicine) Physician · Chicago, IL
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathan Horvat, MD is a Critical Care Medicine (Internal Medicine) Physician provider in Chicago, IL (NPI 1407558877).
Provider details
- NPI number
- 1407558877
- Entity type
- Individual
- Primary specialty
- Critical Care Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 125.082224 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 2160 S 1st AveMaywood, IL 60153-3328Phone: (888) 584-7888
Registry dates
- Enumerated
- 2023-03-20
- Last updated
- 2026-05-07
- Certified
- 2026-05-07
Frequently asked questions
- What is Nathan Horvat's NPI number?
- Nathan Horvat's National Provider Identifier (NPI) is 1407558877, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathan Horvat's specialty?
- Nathan Horvat is listed in the NPPES registry with a primary specialty of Critical Care Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Nathan Horvat located?
- Nathan Horvat's practice location on file with NPPES is 600 S Paulina St Ste 403, Chicago, IL 60612-3806.
- What is Nathan Horvat's phone number?
- The practice phone number listed in the NPPES registry for Nathan Horvat is (312) 942-5000.
- Does Nathan Horvat accept Medicare?
- Nathan Horvat is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathan Horvat's NPI active?
- Yes — Nathan Horvat's NPI (1407558877) is active in the NPPES registry as of the last update on 2026-05-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.