Yvette Lam-Tsai, M.D.
NPI 1518147701ActiveIndividual· Internal Medicine, Gastroenterology· Sun City, AZ
Internal Medicine, Gastroenterology (M.D.) in Sun City, Arizona, trained at State University of New York Downstate Medical Center (class of 2011). Their prescriptions cost Medicare Part D more than their services did: $1,317,228 for 1,476 claims, against $230,109 paid for services in 2024. Madrigal Pharmaceuticals was the largest of 9 companies reporting payments in 2025, $883.81 in all, mostly food and beverage.
Overview
| NPI | 1518147701 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 6, 2007 |
| Last updated in NPPES | Feb 16, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 48670 | AZ |
| Internal Medicine, Gastroenterology | 207RG0100X | 242215 | NY |
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 - Gastroenterology (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 678 |
|---|---|
| Services billed | 7,545 across 60 procedure codes |
| Paid by Medicare | $230,109 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,476 · 3,398 30-day fills |
|---|---|
| Patients | 508 |
| Total drug cost | $1,317,228 |
| Generic share | 81% of claims |
Education and affiliations
| Medical school | State University of New York Downstate Medical Center |
|---|---|
| Graduation year | 2011 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Arizona Digestive Health PCSun City, AZ · 136 clinicians
Hospital affiliations
- Banner Boswell Medical CenterSun City, AZ
- Banner del E. Webb Medical CenterSun City West, AZ
Industry payments (Open Payments)
- 2025$883.81 · 39 payments from 9 companies
- 2024$1,069 · 44 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $273.55 | 10 |
| Genzyme Corporation | $246.91 | 9 |
| Pfizer Inc. | $96.04 | 4 |
| Abbvie Inc. | $88.75 | 5 |
| Gilead Sciences, Inc. | $48.48 | 2 |
What the 2025 payments were for
- Food and Beverage$883.81 · 39 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Gastroenterology providers in Sun City
- 1144243510
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All Internal Medicine, Gastroenterology providers in Arizona →