Stephen Lui, M.D.
NPI 1891770384ActiveIndividual· Internal Medicine, Nephrology· Lynwood, CA
Internal Medicine, Nephrology (M.D.) in Lynwood, California, trained at University of Chicago, Pritzker School of Medicine (class of 2002). Their prescriptions cost Medicare Part D more than their services did: $95,451 for 634 claims, against $24,596 paid for services in 2024. Ardelyx, Inc. was the largest of 3 companies reporting payments in 2025, $128.62 in all, mostly food and beverage.
Overview
| NPI | 1891770384 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Dec 7, 2005 |
| Last updated in NPPES | Jul 8, 2022 |
| Certified by provider | Jun 29, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | A87511 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 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 | 114 |
|---|---|
| Services billed | 629 across 58 procedure codes |
| Paid by Medicare | $24,596 |
Part D prescriptions in 2024
| Prescriptions (claims) | 634 · 1,014 30-day fills |
|---|---|
| Patients | 84 |
| Total drug cost | $95,451 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | University of Chicago, Pritzker School of Medicine |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Hospital affiliations
- Coast Plaza HospitalNorwalk, CA
- Memorialcare Long Beach Medical CenterLong Beach, CA
- Saint Francis Medical CenterLynwood, CA
Other facilities
- Centro de Cuidado Renal, LLCDialysis facility · Huntington Park, CA
- Davita Kidney Dialysis Care UnitDialysis facility · Lynwood, CA
- Davita United Dialysis CenterDialysis facility · Long Beach, CA
- Fmc-Paramount Hope Dialysis CenterDialysis facility · Paramount, CA
- Peritoneal Dialysis Center of America, Inc.Dialysis facility · Montebello, CA
- Kindred Hospital -- la MiradaLong-term care hospital · La Mirada, CA
Industry payments (Open Payments)
- 2025$128.62 · 5 payments from 3 companies
- 2024$23.30 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ardelyx, Inc. | $81.99 | 3 |
| Fresenius USA Marketing, Inc. | $23.57 | 1 |
| Akebia Therapeutics Inc | $23.06 | 1 |
What the 2025 payments were for
- Food and Beverage$128.62 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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