Mark Douglas Porta Jr.
NPI 1275890436ActiveIndividual· Internal Medicine· Shreveport, LA
Internal Medicine in Shreveport, Louisiana, trained at Louisiana State University School of Medicine in New Orleans (class of 2012). Their prescriptions cost Medicare Part D more than their services did: $430,256 for 1,300 claims, against $99,619 paid for services in 2024. Abbvie Inc. was the largest of 17 companies reporting payments in 2025, $1,042 in all, mostly food and beverage.
Overview
| NPI | 1275890436 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Apr 12, 2012 |
| Last updated in NPPES | Jul 30, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 206897 | 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 - Gastroenterology (LA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 214 |
|---|---|
| Services billed | 4,984 across 55 procedure codes |
| Paid by Medicare | $99,619 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,300 · 2,204 30-day fills |
|---|---|
| Patients | 395 |
| Total drug cost | $430,256 |
| Generic share | 80% of claims |
Education and affiliations
| Medical school | Louisiana State University School of Medicine in New Orleans |
|---|---|
| Graduation year | 2012 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Emergency Medicine, Internal Medicine |
Medical groups
- Texas Digestive Disease Consultants, PLLCFlower Mound, TX · 608 clinicians
- Lsuhn Billing LLCLafayette, LA · 206 clinicians
Hospital affiliations
- Baton Rouge General Medical CenterBaton Rouge, LA
- Our Lady of the Lake Regional Medical CenterBaton Rouge, LA
Industry payments (Open Payments)
- 2025$1,042 · 66 payments from 17 companies
- 2024$938.95 · 61 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $253.91 | 21 |
| Ardelyx, Inc. | $170.33 | 10 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $110.99 | 6 |
| Janssen Biotech, Inc. | $84.17 | 4 |
| Takeda Pharmaceuticals U.S.A., Inc. | $56.73 | 3 |
What the 2025 payments were for
- Food and Beverage$1,042 · 66 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 297 internal medicine physicians in Shreveport · All internal medicine physicians in Louisiana