Alexander Y. Chen, MD
NPI 1538248281ActiveIndividual· Internal Medicine, Cardiovascular Disease· Redwood City, CA
Internal Medicine, Cardiovascular Disease (MD) in Redwood City, California, trained at University of California, Davis School of Medicine (class of 1999). Their prescriptions cost Medicare Part D more than their services did: $1,064,684 for 1,284 claims, against $3,332 paid for services in 2024. Medicomp Inc reported $50.38 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1538248281 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 3, 2006 |
| Last updated in NPPES | Dec 13, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | A73705 | 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 - Cardiovascular Disease (Cardiology) (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 63 |
|---|---|
| Services billed | 93 across 15 procedure codes |
| Paid by Medicare | $3,332 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,284 · 3,793 30-day fills |
|---|---|
| Patients | 367 |
| Total drug cost | $1,064,684 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | University of California, Davis School of Medicine |
|---|---|
| Graduation year | 1999 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Secondary specialties | Internal Medicine |
Medical group
- Permanente Medical Group IncOakland, CA · 10,996 clinicians
Hospital affiliation
- Kaiser Foundation Hospital - Redwood CityRedwood City, CA
Industry payments (Open Payments)
- 2025$50.38 · 3 payments from 1 company
- 2024$25.43 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medicomp Inc | $50.38 | 3 |
What the 2025 payments were for
- Food and Beverage$50.38 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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