Wilbert Timothy Tsai, MD
NPI 1013114420ActiveIndividual· Family Medicine· Pomona, CA
Family Medicine (MD) in Pomona, California, licensed in CA, with an NPI issued in June 2007. Their prescriptions cost Medicare Part D more than their services did: $1,040,943 for 7,427 claims, against $67,947 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 14 companies reporting payments in 2025, $1,779 in all, mostly food and beverage. Lists Casa Colina Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1013114420 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 29, 2007 |
| Last updated in NPPES | Aug 17, 2026 |
| Certified by provider | Aug 17, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | A107727 | CA |
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 - Family Practice (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 234 |
|---|---|
| Services billed | 1,054 across 27 procedure codes |
| Paid by Medicare | $67,947 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,427 · 13,490 30-day fills |
|---|---|
| Patients | 582 |
| Total drug cost | $1,040,943 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 2007 |
|---|---|
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Hospital affiliations
- Casa Colina HospitalPomona, CA
- Pomona Valley Hospital Medical CenterPomona, CA
- San Antonio Regional HospitalUpland, CA
Other facilities
- Allegiant Healthcare, IncHome health agency · Pomona, CA
- Apple Healthcare IncHome health agency · Rancho Cucamonga, CA
- Bristol Hospice - Inland Valley LLCHospice · Ontario, CA
- Good Heart Hospice & Palliative Care, Inc.Hospice · Rancho Cucamonga, CA
- Casa Colina Hosp for Rehab MedicineInpatient rehabilitation facility · Pomona, CA
Industry payments (Open Payments)
- 2025$1,779 · 73 payments from 14 companies
- 2024$1,787 · 80 payments from 22 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $483.59 | 16 |
| Amgen Inc. | $364.48 | 17 |
| Novo Nordisk Inc | $197.53 | 7 |
| Merck Sharp & Dohme LLC | $182.98 | 8 |
| Pfizer Inc. | $114.45 | 5 |
What the 2025 payments were for
- Food and Beverage$1,779 · 73 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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