Rebecca Wanting Tsang, M.D., M.P.H.
NPI 1043531528ActiveIndividual· Internal Medicine, Gastroenterology· Evanston, IL
Internal Medicine, Gastroenterology (M.D., M.P.H.) with Endeavor Health Medical Group and 1 other group, practicing in Evanston, Illinois. In 2024 Medicare paid $118,478 for 681 patients, and Part D covered 1,030 of their prescriptions, 84% of them generic. Lists Northshore University Healthsystem - Evanston Hospital as a hospital affiliation.
Overview
| NPI | 1043531528 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D., M.P.H. |
| Sole proprietor | Yes |
| NPI issued | Jun 18, 2010 |
| Last updated in NPPES | Mar 18, 2026 |
| Certified by provider | Mar 18, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 036.132789 | IL |
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 - Gastroenterology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 681 |
|---|---|
| Services billed | 1,176 across 45 procedure codes |
| Paid by Medicare | $118,478 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,030 · 1,627 30-day fills |
|---|---|
| Patients | 552 |
| Total drug cost | $102,363 |
| Generic share | 84% of claims |
Education and affiliations
| Graduation year | 2010 |
|---|---|
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical groups
- Endeavor Health Medical GroupEvanston, IL · 3,350 clinicians
- Endoscopy Center of the North Shore LLCEvanston, IL · 5 clinicians
Hospital affiliation
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 19 gastroenterologists in Evanston · All gastroenterologists in Illinois