Individual provider Active NPI

Douglas K Rex, M.D.

  • Gastroenterology Physician
  • Indianapolis, IN
National Provider Identifier
1164486643
Registry record updated Mar 4, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Gastroenterology PhysicianTaxonomy code 207RG0100X
License
01029838A Issued in IN
Practice address
550 University Blvd
Uh 4100
Indianapolis, IN 46202-5149
Phone
(317) 278-8741
NPI assigned
Apr 13, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Mar 4, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Gastroenterology Physician 207RG0100X 01029838A IN Primary

Addresses

Primary practice location

550 University Blvd
Uh 4100
Indianapolis, IN 46202-5149

Mailing address

250 N Shadeland Ave
Indianapolis, IN 46219-4959

Other practice location 1

1701 N Senate Blvd
Indianapolis, IN 46202-1239
Phone (888) 484-3258

Other identifiers 1

IdentifierTypeStateIssuer
100239400MedicaidIN

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address DREX@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
I20040507001084 IN Practitioner - Gastroenterology 7719976471 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Gastroenterology
Education
Indiana University School of Medicine, 1980
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)

1701 N Senate Blvd
Indianapolis, IN 46202-1239
Phone (888) 484-3258

Hospital & facility affiliations

  • Indiana University Health Hospital, Indianapolis, IN, CCN 150056
  • Indiana University Health North Hospital Hospital, Carmel, IN, CCN 150161
  • Indiana University Health Arnett Hospital Hospital, Lafayette, IN, CCN 150173

Merit-based Incentive Payment System (MIPS)

Final score
71.26 of 100Reported as individual
Quality
61.66
Improvement activities
40
Cost
74.5

Procedures performed for Medicare patients

ProcedureNumber of procedures
Colonoscopy277
Upper gastrointestinal (GI) endoscopy for acid reflux160

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
01029838AINMDGastroenterology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Iu Health Medical Group, LLC CurrentSince Apr 1, 2025 Accepting new patients
University Medical Diagnostic Associates, Inc. Gastroenterology CurrentSince Jan 1, 1995 Accepting new patients
Lima Memorial Joint Operating Company Past Accepting new patients
Major Hospital Past Accepting new patients

Locations

7301 Solutions Ctr
Chicago, IL 60677

10300 N Illinois St
Ste 1200
Carmel, IN 46290
Phone (317) 948-5000

720 N Lincoln St
Greensburg, IN 47240
Phone (812) 522-2349

1232 W Michigan St
#100
Indianapolis, IN 46202

250 N Shadeland Ave
Indianapolis, IN 46219
Phone (317) 948-9174

550 University Blvd
#4100
Indianapolis, IN 46202
Phone (317) 274-3106

550 University Blvd
Indianapolis, IN 46202
Phone (217) 274-5000

1701 Senate Blvd
Indianapolis, IN 46202
Phone (317) 612-2754

Interoperability endpoints

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

Organizations & group practices 4

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.

Hospital & facility affiliations 3

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

NPI Registry JSON

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

{
    "created_epoch": "1144886400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1741046400000",
    "number": "1164486643",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "250 N SHADELAND AVE",
            "city": "INDIANAPOLIS",
            "state": "IN",
            "postal_code": "462194959"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "550 UNIVERSITY BLVD",
            "address_2": "UH 4100",
            "city": "INDIANAPOLIS",
            "state": "IN",
            "postal_code": "462025149",
            "telephone_number": "317-278-8741"
        }
    ],
    "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": "REX",
        "first_name": "DOUGLAS",
        "middle_name": "K",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-04-13",
        "last_updated": "2025-03-04",
        "certification_date": "2025-03-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "IN",
            "license": "01029838A",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "100239400",
            "state": "IN"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "DREX@direct.iuhealth.org",
            "affiliation": "N",
            "address_1": "550 University Blvd",
            "address_2": "UH 4100",
            "city": "Indianapolis",
            "state": "IN",
            "country_code": "US",
            "postal_code": "462025149",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Indianapolis, IN

Sources for this page

Verify at the official NPI Registry.