Lisa Lai Chan, M.D.
NPI 1992860829ActiveIndividual· Internal Medicine· Cypress, TX
Internal Medicine (M.D.) in Cypress, Texas, trained at University of Texas Medical School at San Antonio (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $545,412 for 3,695 claims, against $57,648 paid for services in 2024. Novo Nordisk Inc was the largest of 18 companies reporting payments in 2025, $1,605 in all, mostly food and beverage.
Overview
| NPI | 1992860829 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Dec 22, 2006 |
| Last updated in NPPES | Oct 2, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | K2321 | 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 - Internal Medicine (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 184 |
|---|---|
| Services billed | 939 across 31 procedure codes |
| Paid by Medicare | $57,648 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,695 · 9,580 30-day fills |
|---|---|
| Patients | 436 |
| Total drug cost | $545,412 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | University of Texas Medical School at San Antonio |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Internal Medicine |
Medical group
- St Michael Medical Clinic P ACypress, TX · 3 clinicians
Hospital affiliations
- HCA Houston Healthcare TomballTomball, TX
- Houston Methodist Cypress HospitalCypress, TX
- Houston Methodist Willowbrook HospitalHouston, TX
- Memorial Hermann - Texas Medical CenterHouston, TX
- Memorial Hermann Memorial City HospitalHouston, TX
Industry payments (Open Payments)
- 2025$1,605 · 88 payments from 18 companies
- 2024$1,463 · 92 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $487.32 | 20 |
| Glaxosmithkline, LLC. | $155.57 | 13 |
| Amgen Inc. | $154.10 | 11 |
| Astellas Pharma US Inc | $135.14 | 6 |
| Bayer Healthcare Pharmaceuticals Inc. | $122.53 | 7 |
What the 2025 payments were for
- Food and Beverage$1,605 · 88 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 67 internal medicine physicians in Cypress · All internal medicine physicians in Texas