Chistopher Nguyen Do, M.D.
NPI 1407876659ActiveIndividual· Internal Medicine· San Jose, CA
Internal Medicine (M.D.) in San Jose, California, trained at Texas Tech University Health Science Center School of Medicine (class of 1994). Their prescriptions cost Medicare Part D more than their services did: $1,914,463 for 20,498 claims, against $1,078,891 paid for services in 2024. Amgen Inc. was the largest of 9 companies reporting payments in 2025, $1,274 in all, mostly food and beverage.
Overview
| NPI | 1407876659 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jul 20, 2006 |
| Last updated in NPPES | Apr 28, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 00A628770 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 508 |
|---|---|
| Services billed | 17,808 across 66 procedure codes |
| Paid by Medicare | $1,078,891 |
Part D prescriptions in 2024
| Prescriptions (claims) | 20,498 · 45,998 30-day fills |
|---|---|
| Patients | 1,112 |
| Total drug cost | $1,914,463 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | Texas Tech University Health Science Center School of Medicine |
|---|---|
| Graduation year | 1994 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Hospital affiliation
- Santa Clara Valley Medical CenterSan Jose, CA
Other facilities
- Best Home Health Providers, IncHome health agency · Hayward, CA
- Centerwell Asian American Home HealthHome health agency · Alameda, CA
- Helenium Home Health, Inc.Home health agency · San Jose, CA
- Sequoia Home HealthHome health agency · Milpitas, CA
- Universal Home Health, LLCHome health agency · Menlo Park, CA
Industry payments (Open Payments)
- 2025$1,274 · 46 payments from 9 companies
- 2024$789.28 · 33 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $517.69 | 8 |
| Astrazeneca Pharmaceuticals LP | $264.29 | 22 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $185.86 | 9 |
| Bayer Healthcare Pharmaceuticals Inc. | $150.00 | 1 |
| Novo Nordisk Inc | $44.76 | 2 |
What the 2025 payments were for
- Food and Beverage$1,274 · 46 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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