Thanh Cao, D.O.
NPI 1073963583ActiveIndividual· Internal Medicine, Nephrology· Fountain Valley, CA
Internal Medicine, Nephrology (D.O.) with Balboa Nephrology Medical Group Inc, practicing in Fountain Valley, California. Their prescriptions cost Medicare Part D more than their services did: $1,061,052 for 2,666 claims, against $328,637 paid for services in 2024. Gilead Sciences, Inc. was the largest of 7 companies reporting payments in 2025, $766.47 in all, mostly food and beverage. Lists Hoag Memorial Hospital Presbyterian and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1073963583 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | Yes |
| NPI issued | Jun 15, 2016 |
| Last updated in NPPES | Jan 16, 2026 |
| Certified by provider | Jan 16, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 20A17028 | 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 - Nephrology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 650 |
|---|---|
| Services billed | 3,523 across 18 procedure codes |
| Paid by Medicare | $328,637 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,666 · 5,463 30-day fills |
|---|---|
| Patients | 409 |
| Total drug cost | $1,061,052 |
| Generic share | 78% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Balboa Nephrology Medical Group IncFountain Valley, CA · 76 clinicians
Hospital affiliations
- Hoag Memorial Hospital PresbyterianNewport Beach, CA
- Memorialcare Orange Coast Medical CenterFountain Valley, CA
- Uci Health-OrangeOrange, CA
Other facilities
- Davita Westminster South DialysisDialysis facility · Westminster, CA
- Rai - Goldenwest - WestminsterDialysis facility · Westminster, CA
- Rai - Hospital Circle - WestminsterDialysis facility · Westminster, CA
- Rai - New Hope - Fountain ValleyDialysis facility · Fountain Valley, CA
Industry payments (Open Payments)
- 2025$766.47 · 11 payments from 7 companies
- 2024$831.14 · 8 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Gilead Sciences, Inc. | $268.71 | 2 |
| Bayer Healthcare Pharmaceuticals Inc. | $213.67 | 4 |
| Medtronic, Inc. | $122.78 | 1 |
| Mallinckrodt Hospital Products Inc. | $83.15 | 1 |
| Lilly USA, LLC | $34.16 | 1 |
What the 2025 payments were for
- Food and Beverage$683.32 · 10 payments
- Education$83.15 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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