Xihua Sun, M.D. ,M.S.
NPI 1851326672ActiveIndividual· Specialist· San Jose, CA
Specialist (M.D. ,M.S.) in San Jose, California, licensed in CA, with an NPI issued in July 2006. Their prescriptions cost Medicare Part D more than their services did: $288,368 for 637 claims, against $131,680 paid for services in 2024. Sk Life Science, Inc. was the largest of 6 companies reporting payments in 2025, $1,218 in all, mostly food and beverage. Lists Santa Clara Valley Medical Center as a hospital affiliation.
Overview
| NPI | 1851326672 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. ,M.S. |
| Sole proprietor | Yes |
| NPI issued | Jul 11, 2006 |
| Last updated in NPPES | Aug 12, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Specialist Primary | 174400000X | A55886 | 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 - Neurology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 196 |
|---|---|
| Services billed | 12,160 across 10 procedure codes |
| Paid by Medicare | $131,680 |
Part D prescriptions in 2024
| Prescriptions (claims) | 637 · 1,331 30-day fills |
|---|---|
| Patients | 133 |
| Total drug cost | $288,368 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 1982 |
|---|---|
| Medicare specialty | Neurology |
Hospital affiliation
- Santa Clara Valley Medical CenterSan Jose, CA
Industry payments (Open Payments)
- 2025$1,218 · 43 payments from 6 companies
- 2024$1,182 · 33 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sk Life Science, Inc. | $314.55 | 16 |
| Catalyst Pharmaceuticals, Inc. | $273.81 | 15 |
| Alexion Pharmaceuticals, Inc. | $269.98 | 2 |
| Eisai Inc. | $216.17 | 5 |
| Lundbeck LLC | $81.22 | 3 |
What the 2025 payments were for
- Food and Beverage$1,218 · 43 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 190 Specialist providers in San Jose · All Specialist providers in California