An Quoc Dang, M.D.
NPI 1952302564ActiveIndividual· Internal Medicine, Nephrology· Garden Grove, CA
Internal Medicine, Nephrology (M.D.) in Garden Grove, California, trained at University of California, Geffen School of Medicine (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $298,942 for 2,252 claims, against $105,192 paid for services in 2024. Servier Pharmaceuticals LLC reported $19.22 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1952302564 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Aug 4, 2005 |
| Last updated in NPPES | Oct 22, 2026 |
| Certified by provider | Oct 22, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | A65421 | CA |
| Internal Medicine | 207R00000X | A65421 | 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 - Nephrology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 226 |
|---|---|
| Services billed | 904 across 17 procedure codes |
| Paid by Medicare | $105,192 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,252 · 3,965 30-day fills |
|---|---|
| Patients | 186 |
| Total drug cost | $298,942 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | University of California, Geffen School of Medicine |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Hospital affiliations
- Memorialcare Orange Coast Medical CenterFountain Valley, CA
- Uci Health-OrangeOrange, CA
Other facilities
- Davita Westminster South DialysisDialysis facility · Westminster, CA
- Rai - Goldenwest - WestminsterDialysis facility · Westminster, CA
- Rai - New Hope - Fountain ValleyDialysis facility · Fountain Valley, CA
- Rai-Harbor Blvd - Garden GroveDialysis facility · Garden Grove, CA
Industry payments (Open Payments)
- 2025$19.22 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Servier Pharmaceuticals LLC | $19.22 | 1 |
What the 2025 payments were for
- Food and Beverage$19.22 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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