Robert J. Marx, MD
NPI 1073576351ActiveIndividual· General Practice· Los Gatos, CA
General Practice (MD) in Los Gatos, California, trained at Johns Hopkins University School of Medicine (class of 1975). 163 Medicare patients in 2024, $63,550 paid; nearly all of their 1,291 Part D prescriptions were generic (93%). Astrazeneca Pharmaceuticals LP was the largest of 3 companies reporting payments in 2025, $646.96 in all, mostly food and beverage.
Overview
| NPI | 1073576351 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Apr 8, 2006 |
| Last updated in NPPES | Aug 31, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| General Practice Primary | 208D00000X | A30254 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - General Practice (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 163 |
|---|---|
| Services billed | 908 across 23 procedure codes |
| Paid by Medicare | $63,550 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,291 · 3,274 30-day fills |
|---|---|
| Patients | 163 |
| Total drug cost | $31,708 |
| Generic share | 93% of claims |
Education and affiliations
| Medical school | Johns Hopkins University School of Medicine |
|---|---|
| Graduation year | 1975 |
| Medicare specialty | General Practice |
| Telehealth | Offers telehealth |
Hospital affiliations
- El Camino HealthMountain View, CA
- Good Samaritan HospitalSan Jose, CA
Industry payments (Open Payments)
- 2025$646.96 · 6 payments from 3 companies
- 2024$648.73 · 6 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $497.00 | 4 |
| Lilly USA, LLC | $124.99 | 1 |
| Exact Sciences Corporation | $24.97 | 1 |
What the 2025 payments were for
- Food and Beverage$646.96 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other General Practice providers in Los Gatos
- 1134424682
- 1700105400