Wen-Yuan Marieanne Chiang, D.O.
NPI 1295753655ActiveIndividual· Internal Medicine, Nephrology· South Gate, CA
Internal Medicine, Nephrology (D.O.) in South Gate, California, licensed in CA, with an NPI issued in July 2006. Their prescriptions cost Medicare Part D more than their services did: $690,582 for 1,369 claims, against $142,525 paid for services in 2024. Ardelyx, Inc. was the largest of 6 companies reporting payments in 2025, $510.75 in all, mostly food and beverage.
Overview
| NPI | 1295753655 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | Yes |
| NPI issued | Jul 17, 2006 |
| Last updated in NPPES | Jan 28, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 20A8521 | CA |
| Internal Medicine | 207R00000X | 20A8521 | 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 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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 | 102 |
|---|---|
| Services billed | 593 across 7 procedure codes |
| Paid by Medicare | $142,525 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,369 · 2,575 30-day fills |
|---|---|
| Patients | 182 |
| Total drug cost | $690,582 |
| Generic share | 73% of claims |
Education and affiliations
| Graduation year | 1997 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Other facilities
- Davita Imperial Care Dialysis CenterDialysis facility · Lynwood, CA
- Davita Kidney Dialysis Care UnitDialysis facility · Lynwood, CA
- Davita South Gate DialysisDialysis facility · South Gate, CA
Industry payments (Open Payments)
- 2025$510.75 · 19 payments from 6 companies
- 2024$2,842 · 21 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ardelyx, Inc. | $321.78 | 12 |
| Amgen Inc. | $56.88 | 2 |
| Fresenius USA Marketing, Inc. | $45.93 | 2 |
| Novartis Pharmaceuticals Corporation | $33.28 | 1 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $32.89 | 1 |
What the 2025 payments were for
- Food and Beverage$510.75 · 19 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Nephrology providers in South Gate
- 1083649537
- 1033153101