John Thomas Callaghan, MD, PHD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

01028895A Issued in IN

Practice address

1481 W 10TH St
Indianapolis, IN 46202-2803

Phone

(317) 988-2624

NPI assigned

Jun 5, 2006

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Other identifiers 2

Electronic endpoints 1

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

Specialty

Internal Medicine

Education

University of Kentucky College of Medicine, 1969

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Iu Health Medical Group LLCGroup PAC ID 9638617913, 4,382 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine, Doctor of Philosophy

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: jcallaghan@direct.iuhealth.org

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.

• Iu Health Medical Group, LLC

  • General Practice Physician
  • Indianapolis, IN
  • NPI 1326893777
  Medicare reassignment Care Compare group NPD
• University Medical Diagnostic Associates, Inc.

  • Internal Medicine Physician
  • Indianapolis, IN
  • NPI 1861441537
  Medicare reassignment NPD

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

{
    "created_epoch": "1149465600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1741046400000",
    "number": "1700825064",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1481 W 10TH ST",
            "city": "INDIANAPOLIS",
            "state": "IN",
            "postal_code": "462022803",
            "telephone_number": "317-988-2624"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1481 W 10TH ST",
            "city": "INDIANAPOLIS",
            "state": "IN",
            "postal_code": "462022803",
            "telephone_number": "317-988-2624"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1701 N Senate Blvd",
            "address_purpose": "LOCATION",
            "city": "Indianapolis",
            "state": "IN",
            "postal_code": "462021239",
            "country_code": "US",
            "telephone_number": "888-484-3258",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CALLAGHAN",
        "first_name": "JOHN",
        "middle_name": "THOMAS",
        "credential": "MD, PHD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-06-05",
        "last_updated": "2025-03-04",
        "certification_date": "2025-03-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208U00000X",
            "taxonomy_group": "",
            "desc": "Clinical Pharmacology",
            "state": "IN",
            "license": "01028895",
            "primary": false
        },
        {
            "code": "208U00000X",
            "taxonomy_group": "",
            "desc": "Clinical Pharmacology",
            "state": "IN",
            "license": "01028895A",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IN",
            "license": "01028895A",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "ANTHEM PTAN",
            "identifier": "000000487351",
            "state": "IN"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "200813030",
            "state": "IN"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "JCALLAGHAN@DIRECT.IUHEALTH.ORG",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "1701 N Senate Blvd",
            "city": "Indianapolis",
            "state": "IN",
            "country_code": "US",
            "postal_code": "462021239",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Kaleigh Renee Calisto
• Ray Calisto, RPH
• Paul M Calkins, MD
• Nicole Marie Call, FNP
• Zoe Call, P.A.
• Casey Joanne Callahan
• Christopher M Callahan, MD
• Cierra Dienne Callahan
• Kyle M Callahan
• Lauren Amanda Callahan

• Internal Medicine Physician in Indianapolis, IN
• Providers in Indianapolis, IN by specialty
• Internal Medicine Physician in Indiana

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 4, 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.