NPIMap

Individual provider Active NPI

Aaron C Spalding, MD PHD

  • Radiation Oncology Physician
  • Louisville, KY
National Provider Identifier
1114983871
Registry record updated Mar 25, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Radiation Oncology PhysicianTaxonomy code 2085R0001X
License
42294 Issued in KY
Practice address
676 S Floyd St FL 1
Louisville, KY 40202-1840
Phone
(502) 629-4555
Fax
(502) 629-4599
NPI assigned
Apr 21, 2006
Last updated
Mar 25, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Mar 25, 2026

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

Specialties & licenses 4

Specialty (taxonomy)CodeLicenseStatePrimary
Radiation Oncology Physician 2085R0001X 01059740A IN
Internal Medicine Physician 207R00000X 01059740A IN
Radiation Oncology Physician 2085R0001X 4301081806 MI
Radiation Oncology Physician 2085R0001X 42294 KY Primary

Addresses

Primary practice location

676 S Floyd St FL 1
Louisville, KY 40202-1840

Mailing address

PO Box 776347
Chicago, IL 60677-6347
Phone (502) 588-9490

Other identifiers 3

IdentifierTypeStateIssuer
710067120MedicaidKY
50022085OtherKYPASSPORT
200508490MedicaidIN

Electronic endpoints 2

TypeEndpointUseAffiliation
Direct Messaging Address aspalding21225@direct.nortonhealthcare.org
FHIR URL https://epicsoap.nortonhealthcare.org/

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in KY
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20090113000761 KY Practitioner - Radiation Oncology 2264488907 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Radiation Oncology
Education
University of Colorado School of Medicine, Denver, 2003
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Norton Hospitals, IncGroup PAC ID 9830001528, 137 clinicians

Practice addresses (Care Compare)

315 E Broadway
FL 4
Louisville, KY 40202-3700
Phone (502) 272-5165

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
83.73 of 100Reported as group
Quality
73.7
Promoting interoperability
100
Improvement activities
40
Cost
60.18

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
42294KYMDRadiation Oncology Physician
4301081806MIMDRadiation Oncology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Community Medical Associates, Inc. Past Accepting new patients

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 17

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

View all 17

NPI Registry JSON

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

{
    "created_epoch": "1145577600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1774396800000",
    "number": "1114983871",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 776347",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606776347",
            "telephone_number": "502-588-9490",
            "fax_number": "502-272-5116"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "676 S FLOYD ST FL 1",
            "city": "LOUISVILLE",
            "state": "KY",
            "postal_code": "402021840",
            "telephone_number": "502-629-4555",
            "fax_number": "502-629-4599"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SPALDING",
        "first_name": "AARON",
        "middle_name": "C",
        "credential": "MD PHD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-04-21",
        "last_updated": "2026-03-25",
        "certification_date": "2026-03-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0001X",
            "taxonomy_group": "",
            "desc": "Radiology, Radiation Oncology",
            "state": "IN",
            "license": "01059740A",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IN",
            "license": "01059740A",
            "primary": false
        },
        {
            "code": "2085R0001X",
            "taxonomy_group": "",
            "desc": "Radiology, Radiation Oncology",
            "state": "MI",
            "license": "4301081806",
            "primary": false
        },
        {
            "code": "2085R0001X",
            "taxonomy_group": "",
            "desc": "Radiology, Radiation Oncology",
            "state": "KY",
            "license": "42294",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "710067120",
            "state": "KY"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "PASSPORT",
            "identifier": "50022085",
            "state": "KY"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "200508490",
            "state": "IN"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "aspalding21225@direct.nortonhealthcare.org",
            "affiliation": "N",
            "address_1": "4001 Dutchmans Lane",
            "address_2": "Suite G02",
            "city": "Louisville",
            "state": "KY",
            "country_code": "US",
            "postal_code": "40207",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicsoap.nortonhealthcare.org/",
            "affiliation": "N",
            "address_1": "4001 Dutchmans Lane",
            "address_2": "Suite G02",
            "city": "Louisville",
            "state": "KY",
            "country_code": "US",
            "postal_code": "40207",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Louisville, KY

Sources for this page

Verify at the official NPI Registry.