Ilian Orlando Marquez, M.D.
NPI 1710019906ActiveIndividual· Internal Medicine, Nephrology· Pasadena, CA
Internal Medicine, Nephrology (M.D.) in Pasadena, California, trained at University of Texas Medical School at San Antonio (class of 2001). Their prescriptions cost Medicare Part D more than their services did: $337,639 for 1,881 claims, against $173,024 paid for services in 2024. Amgen Inc. was the largest of 12 companies reporting payments in 2025, $1,110 in all, mostly food and beverage.
Overview
| NPI | 1710019906 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 12, 2007 |
| Last updated in NPPES | Mar 6, 2026 |
| Certified by provider | Mar 6, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | A80500 | CA |
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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 329 |
|---|---|
| Services billed | 1,418 across 13 procedure codes |
| Paid by Medicare | $173,024 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,881 · 3,120 30-day fills |
|---|---|
| Patients | 265 |
| Total drug cost | $337,639 |
| Generic share | 79% of claims |
Education and affiliations
| Medical school | University of Texas Medical School at San Antonio |
|---|---|
| Graduation year | 2001 |
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Medical group
- Arroyo Nephrology AssociatesPasadena, CA · 2 clinicians
Hospital affiliations
- Huntington HospitalPasadena, CA
- Usc Arcadia HospitalArcadia, CA
Other facilities
- Davita Eaton Canyon DialysisDialysis facility · Pasadena, CA
- Fmc-Arroyo DialysisDialysis facility · Pasadena, CA
- Liberty Dialysis - West PasadenaDialysis facility · Pasadena, CA
Industry payments (Open Payments)
- 2025$1,110 · 39 payments from 12 companies
- 2024$603.20 · 19 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $412.99 | 12 |
| Ani Pharmaceuticals, Inc. | $134.67 | 8 |
| Madrigal Pharmaceuticals | $120.99 | 1 |
| Aurinia Pharma U.S., Inc. | $87.76 | 4 |
| Novartis Pharmaceuticals Corporation | $85.35 | 3 |
What the 2025 payments were for
- Food and Beverage$1,110 · 39 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 20 nephrologists in Pasadena · All nephrologists in California