Individual provider Active NPI

Mark S O'Brien, MD

  • Family Medicine Physician
  • Carmel, IN
National Provider Identifier
1124129267
Registry record updated Jan 6, 2021
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Medicine PhysicianTaxonomy code 207Q00000X
License
01037757A Issued in IN
Practice address
11725 N Illinois St Ste 250
Carmel, IN 46032-3015
Phone
(317) 688-5300
Fax
(317) 688-5313
NPI assigned
Sep 25, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 6, 2021

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Family Medicine Physician 207Q00000X 01037757A IN Primary
Preventive Medicine/Occupational Environmental Medicine Physician 2083P0500X 01037757A IN

Addresses

Primary practice location

11725 N Illinois St Ste 250
Carmel, IN 46032-3015

Mailing address

250 N Shadeland Ave
Indianapolis, IN 46219-4959

Other practice location 1

409 E Washington St
Butler, IN 46721-1175
Phone (260) 868-5843

Other identifiers 1

IdentifierTypeStateIssuer
200033390MedicaidIN

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address MOBRIEN7@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
I20090330000617 IN Practitioner - Family PracticePractitioner - Preventive Medicine 5496812877 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Family PracticeAlso: Preventive Medicine
Education
Indiana University School of Medicine, 1988
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
  • Iu Health West Hospital Hospital, Avon, IN, CCN 150158

Procedures performed for Medicare patients

ProcedureNumber of procedures
Removal of skin lesions1-10
Removal of nail tissue1-10
Removal or shaving of skin growth1-10
Skin biopsy1-10

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Iu Health Medical Group, LLC CurrentSince Jul 1, 2025 Accepting new patients
Pic Indiana PC CurrentSince Mar 15, 2014 Accepting new patients
Indiana University Health Care Associates, Inc CurrentSince Feb 1, 2019 Accepting new patients
Parkview Hospital, Inc. Past Accepting new patients
University Medical Diagnostic Associates, Inc. Past Accepting new patients

Locations

5208 Reliable Pkwy
Chicago, IL 60686

306 E Maumee St
Angola, IN 46703
Phone (260) 667-5335

416 E Maumee St
Angola, IN 46703
Phone (260) 665-2141

11725 Illinois St
Ste 250
Carmel, IN 46032
Phone (317) 688-5300

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

924 W Pike St
Goshen, IN 46526
Phone (574) 312-7056

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

1701 N Senate Blvd
Bldg C6
Indianapolis, IN 46202
Phone (913) 962-2000

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

Interoperability endpoints

  • Direct secure messaging: mobrien7@direct.iuhealth.org

Organizations & group practices 5

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": "1159142400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1609891200000",
    "number": "1124129267",
    "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": "11725 N ILLINOIS ST STE 250",
            "city": "CARMEL",
            "state": "IN",
            "postal_code": "460323015",
            "telephone_number": "317-688-5300",
            "fax_number": "317-688-5313"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "409 E Washington St",
            "address_purpose": "LOCATION",
            "city": "Butler",
            "state": "IN",
            "postal_code": "467211175",
            "country_code": "US",
            "telephone_number": "260-868-5843",
            "fax_number": "260-868-5844",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "O'BRIEN",
        "first_name": "MARK",
        "middle_name": "S",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-09-25",
        "last_updated": "2021-01-06",
        "certification_date": "2021-01-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "IN",
            "license": "01037757A",
            "primary": true
        },
        {
            "code": "2083P0500X",
            "taxonomy_group": "",
            "desc": "Preventive Medicine, Preventive Medicine/Occupational Environmental Medicine",
            "state": "IN",
            "license": "01037757A",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "200033390",
            "state": "IN"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "MOBRIEN7@direct.iuhealth.org",
            "affiliation": "N",
            "address_1": "11725 N Illinois St Ste 250",
            "city": "Carmel",
            "state": "IN",
            "country_code": "US",
            "postal_code": "460323015",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Carmel, IN

Sources for this page

Verify at the official NPI Registry.