Individual provider Active NPI

Mark D'Alesio, MD

  • Hospitalist Physician
  • Chicago, IL
National Provider Identifier
1659063543
Registry record updated Sep 1, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Hospitalist PhysicianTaxonomy code 208M00000X
License
036.179648 Issued in IL
Practice address
5841 S Maryland Ave
Chicago, IL 60637-1443
Phone
(773) 702-1000
NPI assigned
May 22, 2023
Last updated
Sep 1, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 1, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Hospitalist Physician 208M00000X 036.179648 IL Primary

Addresses

Primary practice location

5841 S Maryland Ave
Chicago, IL 60637-1443

Mailing address

150 Harvester Dr Ste 300
Burr Ridge, IL 60527-5965
Phone (773) 702-1150

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in PA
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
I20230718003748 PA Order and Referring Only - Internal MedicinePractitioner - Internal Medicine 7911367214

National Provider Directory

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

Interoperability endpoints

  • Direct secure messaging: mark.dalesio@upmcdirect.com

NPI Registry JSON

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

{
    "created_epoch": "1684713600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1788220800000",
    "number": "1659063543",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "150 HARVESTER DR STE 300",
            "city": "BURR RIDGE",
            "state": "IL",
            "postal_code": "605275965",
            "telephone_number": "773-702-1150"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5841 S MARYLAND AVE",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606371443",
            "telephone_number": "773-702-1000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "D'ALESIO",
        "first_name": "MARK",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2023-05-22",
        "last_updated": "2026-09-01",
        "certification_date": "2026-09-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "IL",
            "license": "036.179648",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Chicago, IL

Sources for this page

Verify at the official NPI Registry.