Karn Wijarnpreecha, M.D., MPH
NPI 1942683008ActiveIndividual· Transplant Surgery· Jacksonville, FL
Transplant Surgery (M.D., MPH) with Mayo Clinic Jacksonville and 1 other group, practicing in Jacksonville, Florida. Their prescriptions cost Medicare Part D more than their services did: $394,939 for 428 claims, against $17,838 paid for services in 2024. Madrigal Pharmaceuticals reported $394.07 in payments in 2025, mostly food and beverage. Lists Banner - University Medical Center Phoenix and 1 other hospital as hospital affiliations.
Overview
| NPI | 1942683008 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D., MPH |
| Sole proprietor | No |
| NPI issued | Jul 7, 2015 |
| Last updated in NPPES | Jun 12, 2026 |
| Certified by provider | Jun 12, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Transplant Surgery Primary | 204F00000X | ME179099 | FL |
| Internal Medicine, Transplant Hepatology | 207RT0003X | 64404 | AZ |
| Internal Medicine, Gastroenterology | 207RG0100X | ME179099 | FL |
| Internal Medicine, Gastroenterology | 207RG0100X | 64404 | AZ |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (AZ); Practitioner - Gastroenterology (FL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 88 |
|---|---|
| Services billed | 173 across 16 procedure codes |
| Paid by Medicare | $17,838 |
Part D prescriptions in 2024
| Prescriptions (claims) | 428 · 896 30-day fills |
|---|---|
| Patients | 122 |
| Total drug cost | $394,939 |
| Generic share | 80% of claims |
Education and affiliations
| Graduation year | 2013 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Mayo Clinic JacksonvilleJacksonville, FL · 1,615 clinicians
- Banner - University Super Specialists LLCPhoenix, AZ · 34 clinicians
Hospital affiliations
- Banner - University Medical Center PhoenixPhoenix, AZ
- Mayo ClinicJacksonville, FL
Industry payments (Open Payments)
- 2025$394.07 · 3 payments from 1 company
- 2024$103.89 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $394.07 | 3 |
What the 2025 payments were for
- Food and Beverage$394.07 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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