Individual provider Active NPI

Robert Vargas, MD

  • Internal Medicine Physician
  • Chicago, IL
National Provider Identifier
1861130163
Registry record updated Feb 3, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
036-175209 Issued in IL
Practice address
1620 W Harrison St
Chicago, IL 60612-3801
Phone
(312) 942-5000
NPI assigned
May 25, 2022
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Feb 3, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Hospitalist Physician 208M00000X 036-175209 IL
Internal Medicine Physician 207R00000X 036-175209 IL Primary

Addresses

Primary practice location

1620 W Harrison St
Chicago, IL 60612-3801

Mailing address

1620 W Harrison St
Chicago, IL 60612-3801
Phone (312) 942-5000

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in IL
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20260204003159 IL Practitioner - HospitalistPractitioner - Internal Medicine 3476936899 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
HospitalistAlso: Internal Medicine
Education
University of Nevada School of Medicine, 2022
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Rush University Medical GroupGroup PAC ID 5496658874, 1,521 clinicians

Practice addresses (Care Compare)

1620 W Harrison St
Chicago, IL 60612-3801
Phone (312) 942-3034

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
036-175209ILMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Rush University Medical Center CurrentSince Dec 27, 2025 Accepting new patients
Rush University Medical Group Internal Medicine CurrentSince Dec 27, 2025 Accepting new patients
Larabida Childrens Hospital Past Accepting new patients

Locations

75 Remittance Dr
Dept 1611
Chicago, IL 60675

1700 W Van Buren St
#500
Chicago, IL 60612
Phone (312) 563-2875

1620 W Harrison St
Chicago, IL 60612
Phone (312) 942-4200

1700 W Van Buren St
Ste 500
Chicago, IL 60612
Phone (312) 563-2875

Interoperability endpoints

  • Direct secure messaging: robert.vargas.1@3547.direct.athenahealth.com

Organizations & group practices 3

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

Hospital & facility affiliations 2

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1653436800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770076800000",
    "number": "1861130163",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1620 W HARRISON ST",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606123801",
            "telephone_number": "312-942-5000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1620 W HARRISON ST",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606123801",
            "telephone_number": "312-942-5000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "VARGAS",
        "first_name": "ROBERT",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2022-05-25",
        "last_updated": "2026-02-03",
        "certification_date": "2026-02-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "IL",
            "license": "036-175209",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IL",
            "license": "036-175209",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Chicago, IL

Sources for this page

Verify at the official NPI Registry.