Carl E. Dukes, MD
NPI 1154334464ActiveIndividual· Internal Medicine, Nephrology· San Antonio, TX
Internal Medicine, Nephrology (MD) in San Antonio, Texas, trained at University of Rochester School of Medicine and Dentistry (class of 1976). Their prescriptions cost Medicare Part D more than their services did: $1,159,082 for 3,670 claims, against $77,440 paid for services in 2024. Bayer Healthcare Pharmaceuticals Inc. was the largest of 23 companies reporting payments in 2025, $17,735 in all, mostly speaking and faculty fees.
Overview
| NPI | 1154334464 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Aug 15, 2006 |
| Last updated in NPPES | Jun 3, 2020 |
| Certified by provider | Jun 3, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | F8471 | TX |
| Specialist | 174400000X | F8471 | TX |
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 (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 234 |
|---|---|
| Services billed | 1,095 across 16 procedure codes |
| Paid by Medicare | $77,440 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,670 · 7,248 30-day fills |
|---|---|
| Patients | 339 |
| Total drug cost | $1,159,082 |
| Generic share | 74% of claims |
Education and affiliations
| Medical school | University of Rochester School of Medicine and Dentistry |
|---|---|
| Graduation year | 1976 |
| Medicare specialty | Nephrology |
| Telehealth | Offers telehealth |
Medical group
- M Reza Mizani MD PASan Antonio, TX · 28 clinicians
Other facilities
- Usrc Houston Street DialysisDialysis facility · San Antonio, TX
Industry payments (Open Payments)
- 2025$17,735 · 144 payments from 23 companies
- 2024$11,182 · 140 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bayer Healthcare Pharmaceuticals Inc. | $10,274 | 28 |
| Astrazeneca Pharmaceuticals LP | $4,563 | 19 |
| Opko Pharmaceuticals, LLC | $415.72 | 23 |
| Amgen Inc. | $382.96 | 11 |
| Travere Therapeutics, Inc. | $381.57 | 8 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$12,784 · 5 payments
- Food and Beverage$4,198 · 130 payments
- Travel and Lodging$752.41 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 168 nephrologists in San Antonio · All nephrologists in Texas