Marwan Kaskas, MD
NPI 1831184407ActiveIndividual· Internal Medicine, Nephrology· Shreveport, LA
Internal Medicine, Nephrology (MD) with Northwest Louisiana Nephrology, LLC, practicing in Shreveport, Louisiana. Their prescriptions cost Medicare Part D more than their services did: $582,348 for 2,556 claims, against $222,555 paid for services in 2024. Fresenius USA Marketing, Inc. was the largest of 20 companies reporting payments in 2025, $1,359 in all, mostly food and beverage. Lists Christus Shreveport-Bossier Health System and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1831184407 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 20, 2005 |
| Last updated in NPPES | Jul 1, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 09084R | 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 - Nephrology (LA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 724 |
|---|---|
| Services billed | 2,571 across 26 procedure codes |
| Paid by Medicare | $222,555 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,556 · 4,743 30-day fills |
|---|---|
| Patients | 325 |
| Total drug cost | $582,348 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 1985 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Medical group
- Northwest Louisiana Nephrology, LLCShreveport, LA · 23 clinicians
Hospital affiliations
- Christus Shreveport-Bossier Health SystemShreveport, LA
- Desoto Regional Health SystemMansfield, LA
- Natchitoches Regional Medical CenterNatchitoches, LA
- Springhill Medical CenterSpringhill, LA
- Willis Knighton Medical CenterShreveport, LA
Other facilities
- Fmcna - East Natchitoches DialysisDialysis facility · Natchitoches, LA
- Fmcna - ManyDialysis facility · Many, LA
- Fmcna - South ShreveportDialysis facility · Shreveport, LA
Industry payments (Open Payments)
- 2025$1,359 · 69 payments from 20 companies
- 2024$1,837 · 98 payments from 19 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Fresenius USA Marketing, Inc. | $449.60 | 23 |
| Calliditas Therapeutics US Inc. | $135.35 | 7 |
| Novartis Pharmaceuticals Corporation | $118.42 | 6 |
| Genzyme Corporation | $78.07 | 3 |
| Otsuka America Pharmaceutical, Inc. | $69.84 | 3 |
What the 2025 payments were for
- Food and Beverage$1,309 · 66 payments
- Education$49.90 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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