Individual provider Active NPI

Marissa Just, M.D.

  • Pediatric Hematology & Oncology Physician
  • Indianapolis, IN
National Provider Identifier
1912325028
Registry record updated Feb 14, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Pediatric Hematology & Oncology PhysicianTaxonomy code 2080P0207X
License
01086329A Issued in IN
Practice address
705 Riley Hospital Dr
Indianapolis, IN 46202-5109
Phone
(317) 944-2143
Fax
(317) 944-3107
NPI assigned
Apr 4, 2014
Sex
Female
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 2

Specialty (taxonomy)CodeLicenseStatePrimary
Pediatrics Physician 208000000X 2017-00863 NC
Pediatric Hematology & Oncology Physician 2080P0207X 01086329A IN Primary

Addresses

Primary practice location

705 Riley Hospital Dr
Indianapolis, IN 46202-5109

Mailing address

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

Other identifiers 1

IdentifierTypeStateIssuer
300052899MedicaidIN

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
I20210816000733 IN Practitioner - Pediatric MedicinePractitioner - Hematology/Oncology 0648674531 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Hematology/OncologyAlso: Pediatric Medicine
Education
Other, 2014
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Iu Health Medical Group Riley Specialists LLCGroup PAC ID 9638669815, 285 clinicians

Practice addresses (Care Compare)

705 Riley Hospital Dr
Indianapolis, IN 46202-5109
Phone (888) 484-3258

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
2017-00863NCMDPediatrics Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Beacon Medical Group, Inc. Current Accepting new patients
Beacon Medical Group Inc CurrentSince Apr 1, 2024 Accepting new patients
Beacon Medical Group, Inc. Pediatric Hematology-Oncology CurrentSince Apr 1, 2024 Accepting new patients
University Pediatric Associates, Inc. Pediatrics CurrentSince Sep 1, 2021 Accepting new patients
Iu Health Medical Group Riley Specialists, LLC Pediatrics Past Accepting new patients
Major Hospital Past Accepting new patients

Locations

3245 Health Dr
Ste 100
Granger, IN 46530
Phone (574) 647-2129

705 Riley Hospital Dr
Indianapolis, IN 46202
Phone (317) 274-4779

100 Navarre Pl
Ste 5550
South Bend, IN 46601
Phone (574) 234-5123

Organizations & group practices 6

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": "1396569600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771027200000",
    "number": "1912325028",
    "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",
            "city": "INDIANAPOLIS",
            "state": "IN",
            "postal_code": "462025109",
            "telephone_number": "317-944-2143",
            "fax_number": "317-944-3107"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "JUST",
        "first_name": "MARISSA",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2014-04-04",
        "last_updated": "2026-02-14",
        "certification_date": "2026-02-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "NC",
            "license": "2017-00863",
            "primary": false
        },
        {
            "code": "2080P0207X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Pediatric Hematology-Oncology",
            "state": "IN",
            "license": "01086329A",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "300052899",
            "state": "IN"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Indianapolis, IN

Sources for this page

Verify at the official NPI Registry.