Janet Chin-I Tsang, MD
Internal Medicine, Clinical Cardiac Electrophysiology (MD) with Medstar Medical Group II LLC and 1 other group, practicing in Baltimore, Maryland. Their prescriptions cost Medicare Part D more than their services did: $348,195 for 1,161 claims, against $162,619 paid for services in 2024. Lantheus Medical Imaging, Inc. was the largest of 2 companies reporting payments in 2025, $79.05 in all, mostly food and beverage. Lists Medstar Franklin Square Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1306038187 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Aug 15, 2007 |
| Last updated in NPPES | Jun 8, 2023 |
| Certified by provider | Jun 8, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Clinical Cardiac Electrophysiology Primary | 207RC0001X | 6926420 | WI |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | 105048 | CA |
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 - Cardiovascular Disease (Cardiology) (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 815 |
|---|---|
| Services billed | 1,975 across 32 procedure codes |
| Paid by Medicare | $162,619 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,161 · 3,171 30-day fills |
|---|---|
| Patients | 271 |
| Total drug cost | $348,195 |
| Generic share | 77% of claims |
Education and affiliations
| Graduation year | 2007 |
|---|---|
| Medicare specialty | Cardiovascular Disease (Cardiology) |
Medical groups
- Medstar Medical Group II LLCWashington, DC · 3,767 clinicians
- Medstar Heart Institute LLCBaltimore, MD · 301 clinicians
Hospital affiliations
- Medstar Franklin Square Medical CenterRosedale, MD
- Medstar Good Samaritan HospitalBaltimore, MD
- Medstar Harbor HospitalBaltimore, MD
- Medstar Union Memorial HospitalBaltimore, MD
- Mercy Medical Center IncBaltimore, MD
Industry payments (Open Payments)
- 2025$79.05 · 4 payments from 2 companies
- 2024$61.18 · 3 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lantheus Medical Imaging, Inc. | $60.95 | 3 |
| Philips North America LLC | $18.10 | 1 |
What the 2025 payments were for
- Food and Beverage$79.05 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 32 Internal Medicine, Clinical Cardiac Electrophysiology providers in Baltimore · All Internal Medicine, Clinical Cardiac Electrophysiology providers in Maryland