Eric M. Chen, MD
NPI 1558440222ActiveIndividual· Allergy & Immunology· Walnut Creek, CA
Allergy & Immunology (MD) in Walnut Creek, California, licensed in CA, with an NPI issued in November 2006. Part D covered 292 prescriptions written in 2024, 80% of them generic. Beta Bionics, Inc. was the largest of 2 companies reporting payments in 2025, $147.12 in all, mostly food and beverage.
Overview
| NPI | 1558440222 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 3, 2006 |
| Last updated in NPPES | Dec 6, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Allergy & Immunology Primary | 207K00000X | A68015 | 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 - Allergy/Immunology (CA) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 292 · 443 30-day fills |
|---|---|
| Patients | 89 |
| Total drug cost | $541,983 |
| Generic share | 80% of claims |
Industry payments (Open Payments)
- 2025$147.12 · 2 payments from 2 companies
- 2024$116.52 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Beta Bionics, Inc. | $117.45 | 1 |
| Incyte Corporation | $29.67 | 1 |
What the 2025 payments were for
- Food and Beverage$147.12 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Allergy & Immunology providers in Walnut Creek
- 1871550590
- 1386786408
- 1740282425
- 1619596152
- 1720164536
- 1407148943
- 1073776555
- 1033111729
- 1922091362
- 1114910551
- 1497833594
- 1023010030