Joseph J Hennessy, M.D.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

036082176 Issued in IL

Practice address

1520 W Harrison St
Chicago, IL 60607-3106

Phone

(312) 942-3192

NPI assigned

Feb 22, 2006

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

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.

Opted out of Medicare

Yes, effective Oct 1, 2008 through Oct 1, 2026

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: joseph.hennessy.1@3547.direct.athenahealth.com
• Direct secure messaging: joseph.hennessy.1@28513.direct.athenahealth.com

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.

• West Loop University Medicine, LTD.

  • Internal Medicine Physician
  • Chicago, IL
  • NPI 1730154030
  NPD Authorized official
• MD2 Chicago

  • Exclusive Provider Organization
  • Chicago, IL
  • NPI 1568742542
  NPD (past) Authorized official

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

{
    "created_epoch": "1140566400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1772668800000",
    "number": "1265407209",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1520 W HARRISON ST",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606073106",
            "telephone_number": "312-942-3192"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1520 W HARRISON ST",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606073106",
            "telephone_number": "312-942-3192"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "676 N Michigan Ave",
            "address_2": "Suite 3120",
            "address_purpose": "LOCATION",
            "city": "Chicago",
            "state": "IL",
            "postal_code": "606112883",
            "country_code": "US",
            "telephone_number": "312-780-2301",
            "fax_number": "312-780-2304",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HENNESSY",
        "first_name": "JOSEPH",
        "middle_name": "J",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-02-22",
        "last_updated": "2026-03-05",
        "certification_date": "2026-03-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IL",
            "license": "036082176",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "036082176",
            "state": "IL"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Brenna Lauren Hennessey, PA-C
• Elizabeth Hennessey, L.C.P.C, A.T.R.
• Raquel Hennessey, MSW, LCSW
• Catherine Hennessy Price, LCSW
• John Hennessy
• Kayla A Hennessy, DPT
• Maeve Hennessy
• Margaret Hennessy
• Patrick Hennessy, MPT
• Terah Hennick, MD

• Internal Medicine Physician in Chicago, IL
• Providers in Chicago, IL by specialty
• Internal Medicine Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 5, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring; Opt Out Affidavits.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.