Andy Huy Nguyen, D.O.
Internal Medicine (D.O.) in Encinitas, California, trained at Touro Un Col of Osteopathic Medicine, Henderson (class of 2011). Their prescriptions cost Medicare Part D more than their services did: $1,259,646 for 11,581 claims, against $43,828 paid for services in 2024. Abbott Laboratories was the largest of 6 companies reporting payments in 2025, $292.08 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 | 1053748459 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Sep 30, 2013 |
| Last updated in NPPES | Feb 25, 2020 |
| Certified by provider | Feb 25, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 14947 | CA |
| Hospitalist | 208M00000X | 1876 | NV |
| Hospitalist | 208M00000X | 20A14947 | 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 | Andy Huan Nguyen · Chiropractic | 1128b4 | Apr 18, 2013 | San Jose, CA |
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | Possible (name) | See above |
| 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); Practitioner - Internal Medicine (CO); Practitioner - Internal Medicine (IL); Practitioner - Internal Medicine (MO); Practitioner - Internal Medicine (OK); Practitioner - Internal Medicine (TN); Practitioner - Internal Medicine (TX); Practitioner - Internal Medicine (WA); Practitioner - Internal Medicine (WY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 92 |
|---|---|
| Services billed | 554 across 4 procedure codes |
| Paid by Medicare | $43,828 |
Part D prescriptions in 2024
| Prescriptions (claims) | 11,581 · 20,881 30-day fills |
|---|---|
| Patients | 528 |
| Total drug cost | $1,259,646 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | Touro Un Col of Osteopathic Medicine, Henderson |
|---|---|
| Graduation year | 2011 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Hospitalist Medicine Physicians of Texas PLLCHumble, TX · 686 clinicians
- South Sound Inpatient Physicians PLLCArlington, WA · 422 clinicians
- Sound Physicians of Illinois LLCLake Saint Louis, MO · 193 clinicians
- Hospitalist Medicine Physicians of California IncOceanside, CA · 123 clinicians
- Sound Physicians of Wyoming LLCCasper, WY · 44 clinicians
- Cogent Healthcare of Tennessee, PCDyersburg, TN · 34 clinicians
- Inpatient Services, PCCentennial, CO · 10 clinicians
- Nr Medical AssociatesSan Diego, CA · 7 clinicians
Other facilities
- Friendship Village Sunset HillsNursing home · Saint Louis, MO
- Focused Care at WebsterNursing home · Webster, TX
- Stillwater Post-AcuteNursing home · El Cajon, CA
- Somerset Post Acute CareNursing home · El Cajon, CA
Industry payments (Open Payments)
- 2025$292.08 · 8 payments from 6 companies
- 2024$61.24 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $148.68 | 2 |
| Amgen Inc. | $45.03 | 2 |
| Regeneron Healthcare Solutions, Inc. | $29.56 | 1 |
| Vertex Pharmaceuticals Incorporated | $24.69 | 1 |
| Janssen Scientific Affairs, LLC | $23.92 | 1 |
What the 2025 payments were for
- Food and Beverage$292.08 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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