Andrew Ma, MD
NPI 1528299708ActiveIndividual· Internal Medicine, Infectious Disease· Thousand Oaks, CA
Internal Medicine, Infectious Disease (MD) in Thousand Oaks, California, trained at Tufts University School of Medicine (class of 2009). In 2024 Medicare paid $227,644 for 535 patients, and Part D covered 505 of their prescriptions, 83% of them generic. Ferring Pharmaceuticals Inc. was the largest of 4 companies reporting payments in 2025, $387.36 in all, mostly food and beverage.
Overview
| NPI | 1528299708 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Aug 5, 2009 |
| Last updated in NPPES | Oct 2, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | A115952 | 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 - Infectious Disease (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 535 |
|---|---|
| Services billed | 52,427 across 35 procedure codes |
| Paid by Medicare | $227,644 |
Part D prescriptions in 2024
| Prescriptions (claims) | 505 · 643 30-day fills |
|---|---|
| Patients | 96 |
| Total drug cost | $302,337 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | Tufts University School of Medicine |
|---|---|
| Graduation year | 2009 |
| Medicare specialty | Infectious Disease |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Mark H Mazur MD and Barry Statner MD A Professional CorporationThousand Oaks, CA · 15 clinicians
Hospital affiliations
- Adventist Health Simi ValleySimi Valley, CA
- Los Robles Hospital & Medical CenterThousand Oaks, CA
Other facilities
- Access Tlc Home Health CareHome health agency · San Fernando, CA
Industry payments (Open Payments)
- 2025$387.36 · 12 payments from 4 companies
- 2024$117.45 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ferring Pharmaceuticals Inc. | $197.75 | 6 |
| Novo Nordisk Inc | $102.08 | 1 |
| Abbvie Inc. | $68.39 | 4 |
| Gilead Sciences, Inc. | $19.14 | 1 |
What the 2025 payments were for
- Food and Beverage$387.36 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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