Individual provider Active NPI

Mark T Upton, M.D.

  • Cardiovascular Disease Physician
  • Chicago, IL
National Provider Identifier
1114993250
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Cardiovascular Disease PhysicianTaxonomy code 207RC0000X
Practice address
233 E Erie St
Suite 412
Chicago, IL 60611-2926
Phone
(312) 573-0973
Fax
(312) 573-0973
NPI assigned
Feb 28, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 13, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Cardiovascular Disease Physician 207RC0000X IL Primary

Addresses

Primary practice location

233 E Erie St
Suite 412
Chicago, IL 60611-2926

Mailing address

1730 Park St
Suite 101
Naperville, IL 60563-2688
Phone (630) 718-0200

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Solace Health Medical Group Inc PastSince Mar 12, 2024 Accepting new patients

Organizations & group practices 1

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.

NPI Registry JSON

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

{
    "created_epoch": "1141084800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1114993250",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1730 PARK ST",
            "address_2": "SUITE 101",
            "city": "NAPERVILLE",
            "state": "IL",
            "postal_code": "605632688",
            "telephone_number": "630-718-0200",
            "fax_number": "630-718-0900"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "233 E ERIE ST",
            "address_2": "SUITE 412",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606112926",
            "telephone_number": "312-573-0973",
            "fax_number": "312-573-0973"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "UPTON",
        "first_name": "MARK",
        "middle_name": "T",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-02-28",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "IL",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Chicago, IL

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.