Individual provider Active NPI

Mark Orman Hardin, M.D.

  • Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician
  • Little Rock, AR
National Provider Identifier
1861697815
Registry record updated Jun 24, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianTaxonomy code 208G00000X
License
E-14521 Issued in AR
Practice address
9601 Baptist Health Dr Ste 200
Little Rock, AR 72205-6342
Phone
(501) 223-2860
Fax
(501) 223-2258
NPI assigned
Jun 19, 2007
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 24, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician 208G00000X E-14521 AR Primary
Surgery Physician 208600000X E-14521 AR

Addresses

Primary practice location

9601 Baptist Health Dr Ste 200
Little Rock, AR 72205-6342

Mailing address

11001 Executive Center Dr Ste 200
Little Rock, AR 72211-4393
Phone (501) 223-2860

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in AR
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
I20210729001470 AR Practitioner - Thoracic SurgeryPractitioner - General Surgery 1658699699 Reassigns benefits to 4 organizations

Care Compare profile

Medicare Care Compare
Specialty
Thoracic SurgeryAlso: General Surgery
Education
University of Arkansas College of Medicine, 2007
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
University of Arkansas for Medical SciencesGroup PAC ID 4082528955, 1,159 clinicians
Arkansas Health GroupGroup PAC ID 7911802079, 645 clinicians

Practice addresses (Care Compare)

4301 W Markam St
Little Rock, AR 72205-7101
Phone (501) 686-8000

9601 Baptist Health Dr
Suite 200
Little Rock, AR 72205-6342
Phone (501) 223-2860

Hospital & facility affiliations

  • University of Arkansas Medical Sciences Hospital, Little Rock, AR, CCN 040016
  • Baptist Health Medical Center-Little Rock Hospital, Little Rock, AR, CCN 040114
  • Baptist Health Medical Center North Little Rock Hospital, North Little Rock, AR, CCN 040036

Procedures performed for Medicare patients

ProcedureNumber of procedures
Coronary artery bypass graft (CABG)17
Pacemaker insertion or repair1-10

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
E-14521ARMDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician

Practice roles

OrganizationSpecialtyStatusNew patients
University of Arkansas for Medical Sciences CurrentSince Jun 1, 2024 Accepting new patients
Arkansas Health Group Surgery CurrentSince Mar 1, 2026 Accepting new patients
Arkansas Heart Hospital Rural Health Services, LLC CurrentSince Aug 1, 2021 Accepting new patients
University of Arkansas for Medical Sciences CurrentSince Jun 1, 2024 Accepting new patients
Arkansas Health Group Surgery CurrentSince Mar 1, 2026 Accepting new patients
University of Arkansas for Medical Sciences Surgery Current Accepting new patients
Arkansas Heart Hospital, LLC CurrentSince Aug 1, 2021 Accepting new patients
Arkansas Heart Hospital, LLC CurrentSince Aug 1, 2021 Accepting new patients

Locations

4301 W Markham St
#783
Little Rock, AR 72205
Phone (501) 603-1278

11001 Executive Center Dr
Ste 200
Little Rock, AR 72211
Phone (501) 812-7215

9601 Baptist Health Dr
Ste 200
Little Rock, AR 72205
Phone (501) 224-5666

7 Shackleford West Blvd
Little Rock, AR 72211
Phone (501) 614-3671

4301 W Markham St
Little Rock, AR 72205
Phone (501) 603-1278

Organizations & group practices 8

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": "1182211200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1782259200000",
    "number": "1861697815",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "11001 EXECUTIVE CENTER DR STE 200",
            "city": "LITTLE ROCK",
            "state": "AR",
            "postal_code": "722114393",
            "telephone_number": "501-223-2860",
            "fax_number": "501-223-2258"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "9601 BAPTIST HEALTH DR STE 200",
            "city": "LITTLE ROCK",
            "state": "AR",
            "postal_code": "722056342",
            "telephone_number": "501-223-2860",
            "fax_number": "501-223-2258"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HARDIN",
        "first_name": "MARK",
        "middle_name": "ORMAN",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-06-19",
        "last_updated": "2026-06-24",
        "certification_date": "2026-06-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208G00000X",
            "taxonomy_group": "",
            "desc": "Thoracic Surgery (Cardiothoracic Vascular Surgery)",
            "state": "AR",
            "license": "E-14521",
            "primary": true
        },
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "AR",
            "license": "E-14521",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Little Rock, AR

Sources for this page

Verify at the official NPI Registry.