Adam Christopher Harless, M.D.
NPI 1851653315ActiveIndividual· Internal Medicine, Interventional Cardiology· Hattiesburg, MS
Internal Medicine, Interventional Cardiology (M.D.) with Hattiesburg Clinic PA and 2 other groups, practicing in Hattiesburg, Mississippi. Their prescriptions cost Medicare Part D more than their services did: $1,619,475 for 8,565 claims, against $731,918 paid for services in 2024. Abbott Laboratories was the largest of 11 companies reporting payments in 2025, $1,505 in all, mostly travel and lodging. Lists Forrest General Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1851653315 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 11, 2012 |
| Last updated in NPPES | Sep 16, 2026 |
| Certified by provider | Sep 16, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Interventional Cardiology Primary | 207RI0011X | 25296 | MS |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | 25296 | MS |
| Internal Medicine | 207R00000X | PGY.201682 | LA |
| Internal Medicine, Interventional Cardiology | 207RI0011X | MD.206509 | LA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Interventional Cardiology (MS) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 2,406 |
|---|---|
| Services billed | 9,857 across 130 procedure codes |
| Paid by Medicare | $731,918 |
Part D prescriptions in 2024
| Prescriptions (claims) | 8,565 · 15,558 30-day fills |
|---|---|
| Patients | 928 |
| Total drug cost | $1,619,475 |
| Generic share | 76% of claims |
Education and affiliations
| Graduation year | 2012 |
|---|---|
| Medicare specialty | Interventional Cardiology |
| Secondary specialties | Cardiovascular Disease (Cardiology) |
Medical groups
- Hattiesburg Clinic PAHattiesburg, MS · 537 clinicians
- Forrest County General HospitalHattiesburg, MS · 107 clinicians
- Fgh Physician BillingHattiesburg, MS · 27 clinicians
Hospital affiliations
- Forrest General HospitalHattiesburg, MS
- Highland Community HospitalPicayune, MS
- Marion General HospitalColumbia, MS
- Pearl River County HospitalPoplarville, MS
- South Central Reg Med CtrLaurel, MS
Industry payments (Open Payments)
- 2025$1,505 · 31 payments from 11 companies
- 2024$1,289 · 41 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $1,142 | 16 |
| Medtronic, Inc. | $142.82 | 3 |
| Boston Scientific Corporation | $49.43 | 2 |
| Recor Medical Inc | $39.26 | 2 |
| Novartis Pharmaceuticals Corporation | $28.07 | 2 |
What the 2025 payments were for
- Travel and Lodging$863.71 · 4 payments
- Food and Beverage$641.43 · 27 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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