Karl Mareth, MD
NPI 1083061808ActiveIndividual· Internal Medicine, Gastroenterology· Jasper, GA
Internal Medicine, Gastroenterology (MD) in Jasper, Georgia, trained at Texas Tech University Health Science Center School of Medicine (class of 2016). Their prescriptions cost Medicare Part D more than their services did: $275,658 for 707 claims, against $107,343 paid for services in 2024. Abbvie Inc. was the largest of 17 companies reporting payments in 2025, $1,396 in all, mostly food and beverage.
Overview
| NPI | 1083061808 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 22, 2016 |
| Last updated in NPPES | Jan 12, 2024 |
| Certified by provider | Jan 12, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 92309 | GA |
| Internal Medicine | 207R00000X | ME134605 | FL |
| Internal Medicine, Gastroenterology | 207RG0100X | 34875 | OK |
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 - Gastroenterology (GA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 419 |
|---|---|
| Services billed | 1,378 across 29 procedure codes |
| Paid by Medicare | $107,343 |
Part D prescriptions in 2024
| Prescriptions (claims) | 707 · 1,018 30-day fills |
|---|---|
| Patients | 364 |
| Total drug cost | $275,658 |
| Generic share | 81% of claims |
Education and affiliations
| Medical school | Texas Tech University Health Science Center School of Medicine |
|---|---|
| Graduation year | 2016 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical group
- Digestive Healthcare of GeorgiaAtlanta, GA · 33 clinicians
Hospital affiliations
- Northside Hospital CherokeeCanton, GA
- Piedmont Hospital, IncAtlanta, GA
- Piedmont Mountainside Hospital IncJasper, GA
- Union General HospitalBlairsville, GA
Industry payments (Open Payments)
- 2025$1,396 · 73 payments from 17 companies
- 2024$1,184 · 56 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $290.05 | 23 |
| Janssen Biotech, Inc. | $172.23 | 8 |
| Takeda Pharmaceuticals U.S.A., Inc. | $161.30 | 8 |
| Genzyme Corporation | $136.54 | 5 |
| Lilly USA, LLC | $119.96 | 5 |
What the 2025 payments were for
- Food and Beverage$1,370 · 71 payments
- Education$26.41 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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