Justin T Mao, MD

Primary specialty

Clinical Cardiac Electrophysiology PhysicianTaxonomy code 207RC0001X

License

036-124995 Issued in IL

Practice address

3825 Highland Ave FL Tower24
Downers Grove, IL 60515-1552

Phone

(630) 719-4799

Fax

(630) 963-7420

NPI assigned

Jun 9, 2005

Last updated

Apr 21, 2025By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 5

Addresses

Electronic endpoints 2

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

Specialty

Cardiac ElectrophysiologyAlso: Cardiac Surgery

Education

Other, 2001

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Advocate Health and Hospitals CorporationGroup PAC ID 7810800935, 3,081 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Advocate Good Samaritan Hospital Hospital, Downers Grove, IL, CCN 140288
• Edward Hospital Hospital, Naperville, IL, CCN 140231

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://fhirprd.edward.org/fhirprd/api/FHIR/R4/
• Direct secure messaging: jmao208661@direct.myadvocateaurora.org

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

• Advocate Health and Hospitals Corporation

  dba Advocate Medical Group

  • Multi-Specialty Clinic/Center
  • Oak Brook, IL
  • NPI 1700824455
  Medicare reassignment Care Compare group NPD
• Edward Hospital

  • General Acute Care Hospital
  • Naperville, IL
  • NPI 1013969013
  Medicare reassignment NPD
• Elmhurst Memorial Hospital

  dba Endeavor Health Elmhurst Hospital

  • General Acute Care Hospital
  • Elmhurst, IL
  • NPI 1548306343
  Medicare reassignment NPD
• Naperville Psychiatric Ventures

  dba Linden Oaks Hospital

  • Psychiatric Hospital
  • Naperville, IL
  • NPI 1871628362
  Medicare reassignment NPD
• Advocate Health and Hospitals Corporation

  dba Advocate Medical Group (Dreyer)

  • Multi-Specialty Clinic/Center
  • Aurora, IL
  • NPI 1003542184
  Medicare reassignment
• Advocate Health & Hospitals Corporation

  dba Advocate Christ Medical Group

  • Medical Specialty Clinic/Center
  • Oak Lawn, IL
  • NPI 1912936014
  NPD
• Advocate Health and Hospitals Corporation

  dba Advocate Children's Hospital

  • Children's Hospital
  • Oak Lawn, IL
  • NPI 1508315516
  NPD
• Edward Hospital

  • Home Health Agency
  • Naperville, IL
  • NPI 1912930645

  Cardiovascular Disease

  NPD
• Naperville Psychiatric Ventures

  dba Endeavor Health Linden Oaks Hospital

  • Psychiatric Hospital
  • Naperville, IL
  • NPI 1619910460
  NPD
• Midwest Heart Specialists, LTD

  • Cardiovascular Disease Physician
  • Downers Grove, IL
  • NPI 1417908765

  Internal Medicine

  NPD (past)
• Mt Auburn Prof Services

  dba Sleep Disorders Center

  • Sleep Disorder Diagnostic Clinic/Center
  • Cambridge, MA
  • NPI 1326202797
  NPD (past)

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

• Advocate Health and Hospitals Corporation

  dba Advocate Good Samaritan Hospital

  • General Acute Care Hospital
  • Downers Grove, IL
  • NPI 1578670543
  Care Compare affiliation
• Edward Hospital

  dba Endeavor Health Edward Hospital

  • General Acute Care Hospital
  • Naperville, IL
  • NPI 1427069632
  Care Compare affiliation

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

{
    "created_epoch": "1118275200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1745193600000",
    "number": "1427052273",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "29373 NETWORK PL",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606731293",
            "telephone_number": "847-390-5900"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3825 HIGHLAND AVE FL TOWER24",
            "city": "DOWNERS GROVE",
            "state": "IL",
            "postal_code": "605151552",
            "telephone_number": "630-719-4799",
            "fax_number": "630-963-7420"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1340 Charles St Ste 300",
            "address_purpose": "LOCATION",
            "city": "Rockford",
            "state": "IL",
            "postal_code": "611042200",
            "country_code": "US",
            "telephone_number": "815-490-5888",
            "fax_number": "815-490-5898",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MAO",
        "first_name": "JUSTIN",
        "middle_name": "T",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-06-09",
        "last_updated": "2025-04-21",
        "certification_date": "2025-04-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MA",
            "license": "219331",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IL",
            "license": "036-124995",
            "primary": false
        },
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "IL",
            "license": "036-124995",
            "primary": false
        },
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "MI",
            "license": "225456",
            "primary": false
        },
        {
            "code": "207RC0001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Clinical Cardiac Electrophysiology",
            "state": "IL",
            "license": "036-124995",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "jmao208661@direct.myadvocateaurora.org",
            "affiliation": "N",
            "address_1": "3825 Highland Ave Fl Tower24",
            "city": "Downers Grove",
            "state": "IL",
            "country_code": "US",
            "postal_code": "605151552",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/",
            "affiliation": "N",
            "address_1": "3825 Highland Ave Fl Tower24",
            "city": "Downers Grove",
            "state": "IL",
            "country_code": "US",
            "postal_code": "605151552",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Karen Marie Manning, CPNP
• Gretchen Manske
• Sonya Mansour
• Christine Manuel, LCSW
• Katherine Manusos, RN, IBCLC
• Marc a Schneider, Psy D (Center for Effective Psychology)
• John Gerard Marchese, D.D.S
• Beverlee J Marcoski, OTR/L
• Margaret Mardis, MS LCPC
• Joseph Clarence Marek, MD

• Clinical Cardiac Electrophysiology Physician in Downers Grove, IL
• Providers in Downers Grove, IL by specialty
• Clinical Cardiac Electrophysiology Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 21, 2025; 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.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.