Weijing Sun, MD
NPI 1811925316ActiveIndividual· Internal Medicine, Medical Oncology· Westwood, KS
Internal Medicine, Medical Oncology (MD) with University of Kansas Hospital Authority, practicing in Westwood, Kansas. Their prescriptions cost Medicare Part D more than their services did: $1,373,212 for 466 claims, against $63,048 paid for services in 2024. Ipsen Biopharmaceuticals, Inc was the largest of 6 companies reporting payments in 2025, $33,153 in all, mostly speaking and faculty fees. Lists University of Kansas Health System - St Francis Campus and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1811925316 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 30, 2006 |
| Last updated in NPPES | Sep 18, 2023 |
| Certified by provider | Sep 18, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | 04-40176 | KS |
| Internal Medicine, Medical Oncology | 207RX0202X | 2017033854 | 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 - Medical Oncology (KS) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 205 |
|---|---|
| Services billed | 946 across 11 procedure codes |
| Paid by Medicare | $63,048 |
Part D prescriptions in 2024
| Prescriptions (claims) | 466 · 619 30-day fills |
|---|---|
| Patients | 88 |
| Total drug cost | $1,373,212 |
| Generic share | 72% of claims |
Education and affiliations
| Graduation year | 1982 |
|---|---|
| Medicare specialty | Medical Oncology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- University of Kansas Hospital AuthorityOverland Park, KS · 250 clinicians
Hospital affiliations
- University of Kansas Health System - St Francis CampusTopeka, KS
- University of Kansas Health System Olathe HospitalOlathe, KS
- University of Kansas HospitalKansas City, KS
Other facilities
- Aquinas/Carondelet Home HealthHome health agency · Shawnee, KS
Industry payments (Open Payments)
- 2025$33,153 · 35 payments from 6 companies
- 2024$37,848 · 32 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ipsen Biopharmaceuticals, Inc | $27,191 | 16 |
| Beone Medicines USA, Inc. | $2,631 | 3 |
| Gilead Sciences, Inc. | $2,180 | 1 |
| Jazz Pharmaceuticals Inc. | $1,020 | 13 |
| Astrazeneca Pharmaceuticals LP | $122.31 | 1 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$23,660 · 4 payments
- Consulting Fee$4,580 · 2 payments
- Travel and Lodging$3,952 · 14 payments
- Food and Beverage$961.11 · 15 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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