Mary Chau, D.O.
NPI 1255365888ActiveIndividual· Family Medicine· Sun City, CA
Family Medicine (D.O.) in Sun City, California, licensed in CA, with an NPI issued in July 2006. Their prescriptions cost Medicare Part D more than their services did: $289,686 for 3,600 claims, against $19,852 paid for services in 2024. Novo Nordisk Inc was the largest of 2 companies reporting payments in 2025, $199.24 in all, mostly food and beverage.
Overview
| NPI | 1255365888 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | Yes |
| NPI issued | Jul 10, 2006 |
| Last updated in NPPES | Jul 9, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 20A7618 | 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 - Family Practice (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 49 |
|---|---|
| Services billed | 181 across 6 procedure codes |
| Paid by Medicare | $19,852 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,600 · 9,392 30-day fills |
|---|---|
| Patients | 236 |
| Total drug cost | $289,686 |
| Generic share | 91% of claims |
Education and affiliations
| Graduation year | 1999 |
|---|---|
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Industry payments (Open Payments)
- 2025$199.24 · 3 payments from 2 companies
- 2024$14.93 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $142.72 | 2 |
| Medtronic, Inc. | $56.52 | 1 |
What the 2025 payments were for
- Food and Beverage$199.24 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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