Katherine Shuang-Chyuang Tsai, M.D.
NPI 1316084205ActiveIndividual· Internal Medicine· Denver, CO
Internal Medicine (M.D.) in Denver, Colorado, trained at University of California, Irvine, California College of Medicine (class of 1999). Their prescriptions cost Medicare Part D more than their services did: $970,504 for 1,605 claims, against $278,056 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 27 companies reporting payments in 2025, $4,147 in all, mostly food and beverage.
Overview
| NPI | 1316084205 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 31, 2007 |
| Last updated in NPPES | Mar 29, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 2006008803 | MO |
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 - Allergy/Immunology (CO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 250 |
|---|---|
| Services billed | 16,470 across 26 procedure codes |
| Paid by Medicare | $278,056 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,605 · 2,394 30-day fills |
|---|---|
| Patients | 308 |
| Total drug cost | $970,504 |
| Generic share | 64% of claims |
Education and affiliations
| Medical school | University of California, Irvine, California College of Medicine |
|---|---|
| Graduation year | 1999 |
| Medicare specialty | Allergy/Immunology |
Medical group
- Colorado Allergy and Asthma Centers PCDenver, CO · 25 clinicians
Hospital affiliation
- Centura Health-St Anthony North Health CampusWestminster, CO
Industry payments (Open Payments)
- 2025$4,147 · 231 payments from 27 companies
- 2024$2,713 · 152 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $790.96 | 57 |
| Novartis Pharmaceuticals Corporation | $455.80 | 22 |
| Regeneron Healthcare Solutions, Inc. | $369.47 | 20 |
| Glaxosmithkline, LLC. | $335.04 | 15 |
| Csl Behring | $233.44 | 12 |
What the 2025 payments were for
- Food and Beverage$4,147 · 231 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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