Andrew Chu, M.D.
NPI 1861816639ActiveIndividual· Internal Medicine, Critical Care Medicine· Walnut Creek, CA
Internal Medicine, Critical Care Medicine (M.D.) with Permanente Medical Group Inc, practicing in Walnut Creek, California. Their prescriptions cost Medicare Part D more than their services did: $245,483 for 565 claims, against $1,833 paid for services in 2024. Boehringer Ingelheim Pharmaceuticals, Inc. reported $15.82 in payments in 2025, mostly food and beverage. Lists Kaiser Foundation Hospital - Antioch and 1 other hospital as hospital affiliations.
Overview
| NPI | 1861816639 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Feb 13, 2014 |
| Last updated in NPPES | Sep 11, 2023 |
| Certified by provider | Sep 11, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Critical Care Medicine Primary | 207RC0200X | 188115 | CA |
| Internal Medicine, Critical Care Medicine | 207RC0200X | 304680 | NY |
| Internal Medicine, Critical Care Medicine | 207RC0200X | 01088979A | IN |
| Internal Medicine, Pulmonary Disease | 207RP1001X | 188115 | CA |
| Internal Medicine, Pulmonary Disease | 207RP1001X | 304680 | NY |
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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 12 |
|---|---|
| Services billed | 27 across 8 procedure codes |
| Paid by Medicare | $1,833 |
Part D prescriptions in 2024
| Prescriptions (claims) | 565 · 1,002 30-day fills |
|---|---|
| Patients | 154 |
| Total drug cost | $245,483 |
| Generic share | 72% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Internal Medicine |
| Secondary specialties | Critical Care (Intensivists), Pulmonary Disease |
Medical group
- Permanente Medical Group IncOakland, CA · 10,996 clinicians
Hospital affiliations
- Kaiser Foundation Hospital - AntiochAntioch, CA
- Kaiser Foundation Hospital - Walnut CreekWalnut Creek, CA
Industry payments (Open Payments)
- 2025$15.82 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boehringer Ingelheim Pharmaceuticals, Inc. | $15.82 | 1 |
What the 2025 payments were for
- Food and Beverage$15.82 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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