Lan Ngoc Quang, M.D.
NPI 1437354347ActiveIndividual· Internal Medicine· Stockton, CA
Internal Medicine (M.D.) in Stockton, California, trained at Hahnemann University College of Medicine (class of 2007). Their prescriptions cost Medicare Part D more than their services did: $1,745,522 for 2,564 claims, against $182,020 paid for services in 2024. Lilly USA, LLC was the largest of 24 companies reporting payments in 2025, $3,262 in all, mostly food and beverage.
Overview
| NPI | 1437354347 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 19, 2007 |
| Last updated in NPPES | Feb 2, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A111373 | CA |
| Internal Medicine | 207R00000X | MT191351 | PA |
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 - Nephrology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 360 |
|---|---|
| Services billed | 1,231 across 16 procedure codes |
| Paid by Medicare | $182,020 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,564 · 6,014 30-day fills |
|---|---|
| Patients | 412 |
| Total drug cost | $1,745,522 |
| Generic share | 64% of claims |
Education and affiliations
| Medical school | Hahnemann University College of Medicine |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | Nephrology |
| Telehealth | Offers telehealth |
Hospital affiliations
- Dameron HospitalStockton, CA
- Memorial Medical CenterModesto, CA
- St Joseph's Medical Center of StocktonStockton, CA
Other facilities
- Davita Delta Sierra Dialysis CenterDialysis facility · Stockton, CA
- Davita Port City DialysisDialysis facility · Stockton, CA
- Davita Stockton Home Training DialysisDialysis facility · Stockton, CA
- Davita Stockton Kidney CenterDialysis facility · Stockton, CA
- Fresenius N. California - StocktonDialysis facility · Stockton, CA
Industry payments (Open Payments)
- 2025$3,262 · 154 payments from 24 companies
- 2024$3,425 · 183 payments from 27 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $401.61 | 16 |
| Amgen Inc. | $376.07 | 18 |
| Fresenius USA Marketing, Inc. | $319.38 | 18 |
| Novartis Pharmaceuticals Corporation | $246.37 | 9 |
| Bayer Healthcare Pharmaceuticals Inc. | $234.66 | 13 |
What the 2025 payments were for
- Food and Beverage$3,205 · 151 payments
- Education$56.69 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 117 internal medicine physicians in Stockton · All internal medicine physicians in California