David Cao
NPI 1437758653ActiveIndividual· Physician Assistant· Pomona, CA
Physician Assistant with Chaparral Medical Group Inc, practicing in Pomona, California. Their prescriptions cost Medicare Part D more than their services did: $2,972,636 for 6,064 claims, against $10,869 paid for services in 2024. Tandem Diabetes Care, Inc. was the largest of 10 companies reporting payments in 2025, $385.31 in all, mostly food and beverage. Lists San Antonio Regional Hospital as a hospital affiliation.
Overview
| NPI | 1437758653 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Oct 19, 2020 |
| Last updated in NPPES | Jan 31, 2024 |
| Certified by provider | Jan 31, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 58735 | CA |
| Physician Assistant | 363A00000X | — | — |
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 - Physician Assistant (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 93 |
|---|---|
| Services billed | 128 across 5 procedure codes |
| Paid by Medicare | $10,869 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,064 · 12,279 30-day fills |
|---|---|
| Patients | 658 |
| Total drug cost | $2,972,636 |
| Generic share | 39% of claims |
Education and affiliations
| Graduation year | 2020 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Chaparral Medical Group IncPomona, CA · 65 clinicians
Hospital affiliation
- San Antonio Regional HospitalUpland, CA
Industry payments (Open Payments)
- 2025$385.31 · 16 payments from 10 companies
- 2024$1,057 · 52 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Tandem Diabetes Care, Inc. | $77.89 | 3 |
| Novartis Pharmaceuticals Corporation | $72.60 | 3 |
| Amgen Inc. | $47.24 | 2 |
| Xeris Pharmaceuticals, Inc. | $42.76 | 2 |
| Averitas Pharma Inc. | $41.21 | 1 |
What the 2025 payments were for
- Food and Beverage$385.31 · 16 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 205 physician assistants in Pomona · All physician assistants in California