Yakuan Yvonne Chen, M.D.
NPI 1306959135ActiveIndividual· Internal Medicine, Nephrology· Oakland, CA
Internal Medicine, Nephrology (M.D.) in Oakland, California, trained at Albert Einstein College of Medicine of Yeshiva University (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $1,105,346 for 3,022 claims, against $311,397 paid for services in 2024. Otsuka America Pharmaceutical, Inc. was the largest of 16 companies reporting payments in 2025, $2,082 in all, mostly food and beverage.
Overview
| NPI | 1306959135 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 16, 2006 |
| Last updated in NPPES | Jan 4, 2024 |
| Certified by provider | Jan 4, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | A70467 | CA |
| Specialist | 174400000X | A70467 | 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 | 611 |
|---|---|
| Services billed | 2,812 across 26 procedure codes |
| Paid by Medicare | $311,397 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,022 · 5,664 30-day fills |
|---|---|
| Patients | 336 |
| Total drug cost | $1,105,346 |
| Generic share | 63% of claims |
Education and affiliations
| Medical school | Albert Einstein College of Medicine of Yeshiva University |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Nephrology |
| Telehealth | Offers telehealth |
Medical group
- West Coast KidneyDaly City, CA · 56 clinicians
Hospital affiliations
- Alameda HospitalAlameda, CA
- Alta Bates Summit Medical CenterOakland, CA
- Alta Bates Summit Medical Center - Alta Bates CampBerkeley, CA
- Eden Medical CenterCastro Valley, CA
- Highland HospitalOakland, CA
Other facilities
- Davita Oakland DialysisDialysis facility · Oakland, CA
- Rai-Telegraph-PeraltaDialysis facility · Oakland, CA
- Shc Wb San LeandroDialysis facility · San Leandro, CA
- Asian Network Pacific Home Care, IncHome health agency · Oakland, CA
- Centerwell Asian American Home HealthHome health agency · Alameda, CA
Industry payments (Open Payments)
- 2025$2,082 · 74 payments from 16 companies
- 2024$4,693 · 68 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Otsuka America Pharmaceutical, Inc. | $310.01 | 8 |
| Amgen Inc. | $295.92 | 11 |
| Mallinckrodt Hospital Products Inc. | $246.62 | 9 |
| Fresenius USA Marketing, Inc. | $211.63 | 9 |
| Travere Therapeutics, Inc. | $179.02 | 6 |
What the 2025 payments were for
- Food and Beverage$2,061 · 73 payments
- Education$21.25 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Nephrology providers in Oakland
- 1699852327
- 1265527980
- 1568952356
- 1891912689
- 1740221514
- 1700017175
- 1588800080
- 1801359260
- 1235132580
- 1588198204
- 1881199727
- 1720166507