Nan Jiang, MD
NPI 1407883259ActiveIndividual· Family Medicine· Houston, TX
Family Medicine (MD) with Wangandjiang, MD, PA, practicing in Houston, Texas. Their prescriptions cost Medicare Part D more than their services did: $515,974 for 4,406 claims, against $94,691 paid for services in 2024. Amgen Inc. was the largest of 14 companies reporting payments in 2025, $975.92 in all, mostly food and beverage. Lists Memorial Hermann - Texas Medical Center and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1407883259 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 27, 2006 |
| Last updated in NPPES | Jun 18, 2026 |
| Certified by provider | Jun 18, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | L6965 | TX |
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 - Family Practice (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 264 |
|---|---|
| Services billed | 1,404 across 27 procedure codes |
| Paid by Medicare | $94,691 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,406 · 10,970 30-day fills |
|---|---|
| Patients | 663 |
| Total drug cost | $515,974 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 1992 |
|---|---|
| Medicare specialty | Family Practice |
| Secondary specialties | Geriatric Medicine |
| Telehealth | Offers telehealth |
Medical group
- Wangandjiang, MD, PAHouston, TX · 14 clinicians
Hospital affiliations
- Memorial Hermann - Texas Medical CenterHouston, TX
- Memorial Hermann Hospital SystemHouston, TX
- Memorial Hermann Katy HospitalKaty, TX
- Memorial Hermann Memorial City HospitalHouston, TX
Industry payments (Open Payments)
- 2025$975.92 · 52 payments from 14 companies
- 2024$1,243 · 59 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $205.79 | 6 |
| Astrazeneca Pharmaceuticals LP | $162.18 | 16 |
| Novo Nordisk Inc | $131.67 | 6 |
| Gilead Sciences, Inc. | $101.29 | 4 |
| Lilly USA, LLC | $71.51 | 4 |
What the 2025 payments were for
- Food and Beverage$975.92 · 52 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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