Ling Xu, M.D.
NPI 1073684429ActiveIndividual· Internal Medicine· Castro Valley, CA
Internal Medicine (M.D.) with University Healthcare Alliance, practicing in Castro Valley, California. Their prescriptions cost Medicare Part D more than their services did: $281,417 for 3,405 claims, against $106,845 paid for services in 2024. Lists Eden Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1073684429 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 9, 2006 |
| Last updated in NPPES | Apr 24, 2024 |
| Certified by provider | Apr 24, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A69273 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 382 |
|---|---|
| Services billed | 1,542 across 31 procedure codes |
| Paid by Medicare | $106,845 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,405 · 8,442 30-day fills |
|---|---|
| Patients | 457 |
| Total drug cost | $281,417 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 1983 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- University Healthcare AlliancePleasanton, CA · 327 clinicians
Hospital affiliations
- Eden Medical CenterCastro Valley, CA
- Stanford Health CareStanford, CA
- Stanford Health Care Tri-ValleyPleasanton, CA
Other facilities
- Blc Homehealth IncHome health agency · San Leandro, CA
- Healthflex Home Health ServicesHome health agency · Oakland, CA
- Sutter Care at HomeHome health agency · Concord, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 31 internal medicine physicians in Castro Valley · All internal medicine physicians in California