Yan Xing, MD
NPI 1184987166ActiveIndividual· Internal Medicine, Medical Oncology· Duarte, CA
Internal Medicine, Medical Oncology (MD) with City of Hope Medical Foundation, practicing in Duarte, California. Their prescriptions cost Medicare Part D more than their services did: $561,348 for 182 claims, against $113,003 paid for services in 2024. E.R. Squibb & Sons, L.L.C. was the largest of 3 companies reporting payments in 2025, $195.77 in all, mostly food and beverage.
Overview
| NPI | 1184987166 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 24, 2012 |
| Last updated in NPPES | Nov 24, 2020 |
| Certified by provider | Nov 24, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | A158622 | CA |
| Internal Medicine | 207R00000X | 251165 | MA |
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 - Medical Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 230 |
|---|---|
| Services billed | 1,460 across 23 procedure codes |
| Paid by Medicare | $113,003 |
Part D prescriptions in 2024
| Prescriptions (claims) | 182 · 203 30-day fills |
|---|---|
| Patients | 43 |
| Total drug cost | $561,348 |
| Generic share | 72% of claims |
Education and affiliations
| Graduation year | 1994 |
|---|---|
| Medicare specialty | Medical Oncology |
| Telehealth | Offers telehealth |
Medical group
- City of Hope Medical FoundationDuarte, CA · 982 clinicians
Industry payments (Open Payments)
- 2025$195.77 · 3 payments from 3 companies
- 2024$2,883 · 11 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| E.R. Squibb & Sons, L.L.C. | $124.94 | 1 |
| Immunocore Limited | $37.02 | 1 |
| Regeneron Healthcare Solutions, Inc. | $33.81 | 1 |
What the 2025 payments were for
- Food and Beverage$195.77 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 50 medical oncologists in Duarte · All medical oncologists in California