Ha Son Nguyen, M.D.
NPI 1447275631ActiveIndividual· Obstetrics & Gynecology· Garden Grove, CA
Obstetrics & Gynecology (M.D.) in Garden Grove, California, trained at Northwestern University Feinberg Medical School (class of 1986). Their prescriptions cost Medicare Part D more than their services did: $8,623 for 117 claims, against $1,681 paid for services in 2024. Sumitomo Pharma America, Inc. was the largest of 12 companies reporting payments in 2025, $1,269 in all, mostly food and beverage.
Overview
| NPI | 1447275631 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 12, 2006 |
| Last updated in NPPES | Aug 3, 2026 |
| Certified by provider | Aug 3, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | G67118 | 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 - Obstetrics/Gynecology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 15 |
|---|---|
| Services billed | 18 across 6 procedure codes |
| Paid by Medicare | $1,681 |
Part D prescriptions in 2024
| Prescriptions (claims) | 117 · 200 30-day fills |
|---|---|
| Patients | 39 |
| Total drug cost | $8,623 |
| Generic share | 79% of claims |
Education and affiliations
| Medical school | Northwestern University Feinberg Medical School |
|---|---|
| Graduation year | 1986 |
| Medicare specialty | Obstetrics/Gynecology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- The Roads Foundation, IncCompton, CA · 61 clinicians
Hospital affiliations
- College Medical CenterLong Beach, CA
- St Mary Medical CenterLong Beach, CA
Industry payments (Open Payments)
- 2025$1,269 · 24 payments from 12 companies
- 2024$860.97 · 31 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sumitomo Pharma America, Inc. | $367.23 | 6 |
| Ucb, Inc. | $125.01 | 1 |
| Mayne Pharma Commercial LLC | $122.03 | 1 |
| Novo Nordisk Inc | $118.96 | 1 |
| Biogen, Inc. | $114.21 | 1 |
What the 2025 payments were for
- Food and Beverage$1,263 · 23 payments
- Education$5.41 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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