NPIMap

Individual provider Active NPI

Adam Christopher Harless, M.D.

  • Interventional Cardiology Physician
  • Hattiesburg, MS
National Provider Identifier
1851653315
Registry record updated Sep 16, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Interventional Cardiology PhysicianTaxonomy code 207RI0011X
License
25296 Issued in MS
Practice address
415 S 28TH Ave
Hattiesburg, MS 39401-7246
Phone
(601) 579-5463
Fax
(601) 579-5240
NPI assigned
Jun 11, 2012
Last updated
Sep 16, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 16, 2026

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

Specialties & licenses 4

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X PGY.201682 LA
Cardiovascular Disease Physician 207RC0000X 25296 MS
Interventional Cardiology Physician 207RI0011X MD.206509 LA
Interventional Cardiology Physician 207RI0011X 25296 MS Primary

Addresses

Primary practice location

415 S 28TH Ave
Hattiesburg, MS 39401-7246

Mailing address

232 Whiddon Rd
Purvis, MS 39475-4138
Phone (601) 520-0837

Other practice location 1

1514 Jefferson Hwy
New Orleans, LA 70121-2429
Phone (504) 842-3260

Other identifiers 1

IdentifierTypeStateIssuer
06880766MedicaidMS

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address aharless64658@directpatientrecord.com Health Information Exchange (HIE)

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MS
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
I20200709002502 MS Practitioner - Interventional CardiologyPractitioner - Cardiovascular Disease (Cardiology) 0941429963 Reassigns benefits to 4 organizations

Care Compare profile

Medicare Care Compare
Specialty
Interventional CardiologyAlso: Cardiovascular Disease (Cardiology)
Education
Other, 2012
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
FGH Physician BillingGroup PAC ID 1850344946, 27 clinicians
Forrest County General HospitalGroup PAC ID 1052397767, 107 clinicians
Hattiesburg Clinic PAGroup PAC ID 5193706794, 525 clinicians

Practice addresses (Care Compare)

130 Highland Pkwy
Picayune, MS 39466-5574

2807 Arlington Loop
Hattiesburg, MS 39401-7143
Phone (601) 288-3446

300 S 29TH Ave
Hattiesburg, MS 39401-7127
Phone (601) 288-1064

415 S 28TH Ave
Hattiesburg, MS 39401-7246
Phone (601) 264-6000

6051 U S Hwy 49
Hattiesburg, MS 39401-7200
Phone (601) 288-4273

6051 US Hwy 49 S
Hattiesburg, MS 39401-7200
Phone (601) 288-7000

801 Goodyear Blvd
Picayune, MS 39466-3221
Phone (601) 749-0688

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Coronary angioplasty and stenting37
Pacemaker insertion or repair1-10
Varicose vein removal18
Leg revascularization (restoring blood flow)1-10

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
PGY.201682LAMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Forrest County General Hospital CurrentSince Mar 5, 2021 Accepting new patients
FGH Physician Billing Cardiovascular Disease CurrentSince Mar 5, 2021 Accepting new patients
Walthall General Hospital Internal Medicine CurrentSince Mar 5, 2021 Accepting new patients
Walthall General Hospital CurrentSince Mar 5, 2021 Accepting new patients
Forrest County General Hospital Current Accepting new patients
Forrest County General Hospital CurrentSince Mar 5, 2021 Accepting new patients
Hattiesburg Clinic PA CurrentSince Jul 1, 2020 Accepting new patients
Hattiesburg Clinic, PA CurrentSince Jul 1, 2020 Accepting new patients
Forrest County General Hospital Past Accepting new patients
Hattiesburg Clinic, PA Past Accepting new patients

Locations

1560 Sumrall Rd
Columbia, MS 39429
Phone (601) 736-6303

415 S 28th Ave
Hattiesburg, MS 39401
Phone (601) 261-3606

6051 U S Highway 49
Hattiesburg, MS 39401
Phone (601) 288-2690

801 Goodyear Blvd
Picayune, MS 39466
Phone (601) 749-0688

100 Hospital Dr
Tylertown, MS 39667
Phone (601) 876-0455

Interoperability endpoints

  • Direct secure messaging: aharless64658@directpatientrecord.com

Organizations & group practices 10

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 4

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": "1339372800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1789516800000",
    "number": "1851653315",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "232 WHIDDON RD",
            "city": "PURVIS",
            "state": "MS",
            "postal_code": "394754138",
            "telephone_number": "601-520-0837"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "415 S 28TH AVE",
            "city": "HATTIESBURG",
            "state": "MS",
            "postal_code": "394017246",
            "telephone_number": "601-579-5463",
            "fax_number": "601-579-5240"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1514 Jefferson Hwy",
            "address_purpose": "LOCATION",
            "city": "New Orleans",
            "state": "LA",
            "postal_code": "701212429",
            "country_code": "US",
            "telephone_number": "504-842-3260",
            "fax_number": "504-842-3193",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HARLESS",
        "first_name": "ADAM",
        "middle_name": "CHRISTOPHER",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2012-06-11",
        "last_updated": "2026-09-16",
        "certification_date": "2026-09-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "LA",
            "license": "PGY.201682",
            "primary": false
        },
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "MS",
            "license": "25296",
            "primary": false
        },
        {
            "code": "207RI0011X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Interventional Cardiology",
            "state": "LA",
            "license": "MD.206509",
            "primary": false
        },
        {
            "code": "207RI0011X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Interventional Cardiology",
            "state": "MS",
            "license": "25296",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "06880766",
            "state": "MS"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "aharless64658@directpatientrecord.com",
            "affiliation": "N",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "address_1": "415 S 28th Ave",
            "city": "Hattiesburg",
            "state": "MS",
            "country_code": "US",
            "postal_code": "394017246",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Hattiesburg, MS

Sources for this page

Verify at the official NPI Registry.