WEIJING SUN (MD) – Hematology & Oncology Physician, NPI 1811925316
Hematology & Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
9,962 INTERNAL MEDICINE in PA
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Provider Addresses for WEIJING SUN (MD)
Hospital of the University of Pennsylvania, 3400, Spruce Street, University City, Philadelphia, Philadelphia County, Pennsylvania, 19104, United States
15 PENN TOWER
PHILADELPHIA, PA 19104
Phone:
Type: Mailing
2650 SHAWNEE MISSION PKWY
WESTWOOD, KS 662052003
Phone: (913) 588-1227
Type: Location
2330 SHAWNEE MISSION PKWY
WESTWOOD, KS 662052005
Phone: (913) 588-6029
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 62 Open Payments records for all available years, with a total value of $70,031.
Total Amount is formed as General ($70,031) + Research ($0) + Ownership ($0) = $70,031.
Last reported payment date: 2024-10-06 • Largest payer in this snapshot: Astellas Pharma US Inc ($40,334).
Total Amount
$70,031
General + Research + Ownership
Payments
62
Total payment records
General Amount
$70,031
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-06
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Astellas Pharma US Inc | $40,334 |
| Ipsen Biopharmaceuticals, Inc | $22,528 |
| Merck Sharp & Dohme LLC | $5,944 |
| AstraZeneca Pharmaceuticals LP | $790 |
| BeiGene USA, Inc. | $274 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2017-08-25
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20170825001994 | I | Medical Oncology | KS | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 301 | 104 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 40 | 33 | $0 |
| 99205 | New patient office or other outpatient visit, 60-74 minutes | 37 | 37 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 29 | 28 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 23 | 23 | $0 |
Insurance plans in this area (ZIP 19104)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Hematology/Oncology, Internal Medicine | KS | |
| Hematology/Oncology, Internal Medicine | KS | |
| - | IL | |
| P A T H O L O G Y | PA | |
| Nurse Practitioner | KS | |
| Hematology/Oncology, Internal Medicine | KS | |
| Nurse Practitioner | KS | |
| Radiation Oncology | MO | |
| Hematology/Oncology, Internal Medicine | KS | |
| Radiation Oncology | MO |
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