Mark Steven Russo, MD, PHD
NPI 1316934326ActiveIndividual· Internal Medicine, Nephrology· Naples, FL
Internal Medicine, Nephrology (MD, PHD) in Naples, Florida, trained at State University of New York Downstate Medical Center (class of 1995). 980 Medicare patients in 2024, $312,325 paid; nearly all of their 1,786 Part D prescriptions were generic (93%). Novartis Pharmaceuticals Corporation was the largest of 20 companies reporting payments in 2025, $3,088 in all, mostly food and beverage.
Overview
| NPI | 1316934326 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, PHD |
| Sole proprietor | No |
| NPI issued | Oct 4, 2005 |
| Last updated in NPPES | Sep 11, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 83306 | FL |
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 (FL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 980 |
|---|---|
| Services billed | 2,680 across 24 procedure codes |
| Paid by Medicare | $312,325 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,786 · 4,733 30-day fills |
|---|---|
| Patients | 415 |
| Total drug cost | $187,317 |
| Generic share | 93% of claims |
Education and affiliations
| Medical school | State University of New York Downstate Medical Center |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Medical group
- Naples Nephrology P ANaples, FL · 7 clinicians
Hospital affiliations
- Lee Memorial HospitalFort Myers, FL
- Naples Community HospitalNaples, FL
- Physicians Regional Medical Center - Pine RidgeNaples, FL
Other facilities
- Davita Ave Maria DialysisDialysis facility · Ave Maria, FL
- Davita Bonita Springs DialysisDialysis facility · Bonita Springs, FL
- Usrc MustangDialysis facility · Naples, FL
- Usrc Uptown Naples DialysisDialysis facility · Naples, FL
- Trilogy Home HealthcareHome health agency · Estero, FL
Industry payments (Open Payments)
- 2025$3,088 · 85 payments from 20 companies
- 2024$3,564 · 55 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $545.75 | 12 |
| Akebia Therapeutics Inc | $541.18 | 17 |
| Calliditas Therapeutics US Inc. | $508.33 | 9 |
| Mallinckrodt Hospital Products Inc. | $357.34 | 13 |
| Baxter Healthcare | $214.26 | 2 |
What the 2025 payments were for
- Food and Beverage$3,088 · 85 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 30 nephrologists in Naples · All nephrologists in Florida