Tam T. Nguyen, M.D.
Family Medicine (M.D.) in Union City, California, trained at Pennsylvania State University College of Medicine (class of 2005). Their prescriptions cost Medicare Part D more than their services did: $1,474,034 for 10,015 claims, against $242,744 paid for services in 2024. Abbott Laboratories was the largest of 3 companies reporting payments in 2025, $158.56 in all, mostly food and beverage. A record with the same name and state is on the OIG exclusion list; it carries no NPI, so check it before acting.
Overview
| NPI | 1093929697 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 10, 2007 |
| Last updated in NPPES | Sep 16, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | A96679 | CA |
Exclusion screening
Possible match: verify before acting. The OIG list has a record with the same name in California, but that record carries no NPI, so it may be a different person or business.
| Matched by | Name on OIG list | Exclusion type | Excluded since | Location |
|---|---|---|---|---|
| Name + state | Tam Van Nguyen · Chiropractic | 1128a3 | Jul 19, 2012 | Westminster, CA |
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | Possible (name) | See above |
| 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 - Family Practice (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 430 |
|---|---|
| Services billed | 4,857 across 71 procedure codes |
| Paid by Medicare | $242,744 |
Part D prescriptions in 2024
| Prescriptions (claims) | 10,015 · 24,718 30-day fills |
|---|---|
| Patients | 718 |
| Total drug cost | $1,474,034 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | Pennsylvania State University College of Medicine |
|---|---|
| Graduation year | 2005 |
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- Washington Township Medical FoundationFremont, CA · 117 clinicians
Hospital affiliation
- Washington HospitalFremont, CA
Other facilities
- A1 Pro Home Health Inc.Home health agency · San Leandro, CA
- Amore Home HealthHome health agency · Fremont, CA
- Centerwell Asian American Home HealthHome health agency · Alameda, CA
- Meridian Home HealthHome health agency · Newark, CA
Industry payments (Open Payments)
- 2025$158.56 · 4 payments from 3 companies
- 2024$87.02 · 4 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $104.61 | 1 |
| Novo Nordisk Inc | $32.96 | 2 |
| Abbvie Inc. | $20.99 | 1 |
What the 2025 payments were for
- Food and Beverage$158.56 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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