Tan Michael Nguyen, MD
NPI 1003256843ActiveIndividual· Internal Medicine· Sunnyvale, CA
Internal Medicine (MD) in Sunnyvale, California, trained at Albert Einstein College of Medicine of Yeshiva University (class of 2013). Their prescriptions cost Medicare Part D more than their services did: $261,912 for 2,445 claims, against $77,123 paid for services in 2024.
Overview
| NPI | 1003256843 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 25, 2013 |
| Last updated in NPPES | Oct 10, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A140731 | CA |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | NY |
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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 276 |
|---|---|
| Services billed | 892 across 40 procedure codes |
| Paid by Medicare | $77,123 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,445 · 6,060 30-day fills |
|---|---|
| Patients | 310 |
| Total drug cost | $261,912 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | Albert Einstein College of Medicine of Yeshiva University |
|---|---|
| Graduation year | 2013 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Sutter Bay Medical FoundationFremont, CA · 3,829 clinicians
Hospital affiliation
- El Camino HealthMountain View, CA
Other facilities
- Sutter Care at HomeHome health agency · Saratoga, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 52 internal medicine physicians in Sunnyvale · All internal medicine physicians in California