Individual provider Active NPI

Matthew August Kardatzke, M.D.

  • Neonatal-Perinatal Medicine Physician
  • Indianapolis, IN
National Provider Identifier
1336465137
Registry record updated Feb 14, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Neonatal-Perinatal Medicine PhysicianTaxonomy code 2080N0001X
License
01072311 Issued in IN
Practice address
705 Riley Hospital Dr
RR 208
Indianapolis, IN 46202-5109
Phone
(317) 274-4715
Fax
(317) 274-2065
NPI assigned
Apr 19, 2010
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Feb 14, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Neonatal-Perinatal Medicine Physician 2080N0001X 01072311 IN Primary

Addresses

Primary practice location

705 Riley Hospital Dr
RR 208
Indianapolis, IN 46202-5109

Mailing address

PO Box 719094
Chicago, IL 60677-9318
Phone (317) 777-6435

Other practice location 1

7979 N Shadeland Ave Ste 310
Indianapolis, IN 46250-2042
Phone (317) 621-5733

Other identifiers 1

IdentifierTypeStateIssuer
201124520MedicaidIN

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address mkardatz@direct.iuhealth.org

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in IN
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
I20140717001300 IN Order and Referring Only - Pediatric MedicinePractitioner - Pediatric Medicine 9931325594

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
01072311INMDNeonatal-Perinatal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Iu Health Medical Group Riley Specialists, LLC Past Accepting new patients
University Pediatric Associates, Inc. PastSince Feb 7, 2021 Accepting new patients

Interoperability endpoints

  • Direct secure messaging: mkardatzke199399@ecommunitydirect.com

Organizations & group practices 2

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": "1271635200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771027200000",
    "number": "1336465137",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 719094",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606779318",
            "telephone_number": "317-777-6435",
            "fax_number": "317-777-6644"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "705 RILEY HOSPITAL DR",
            "address_2": "RR 208",
            "city": "INDIANAPOLIS",
            "state": "IN",
            "postal_code": "462025109",
            "telephone_number": "317-274-4715",
            "fax_number": "317-274-2065"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "7979 N Shadeland Ave Ste 310",
            "address_purpose": "LOCATION",
            "city": "Indianapolis",
            "state": "IN",
            "postal_code": "462502042",
            "country_code": "US",
            "telephone_number": "317-621-5733",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "KARDATZKE",
        "first_name": "MATTHEW",
        "middle_name": "AUGUST",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2010-04-19",
        "last_updated": "2026-02-14",
        "certification_date": "2026-02-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2080N0001X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Neonatal-Perinatal Medicine",
            "state": "IN",
            "license": "01072311",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "201124520",
            "state": "IN"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "mkardatz@direct.iuhealth.org",
            "affiliation": "N",
            "address_1": "705 Riley Hospital Dr",
            "address_2": "RR 208",
            "city": "Indianapolis",
            "state": "IN",
            "country_code": "US",
            "postal_code": "462025109",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Indianapolis, IN

Sources for this page

Verify at the official NPI Registry.