Quick answers
- Which hospitals does Robert J. Marx work at?
- Medicare's official clinician data lists Robert J. Marx at 2 hospitals: El Camino Health and Good Samaritan Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Robert J. Marx see patients?
- Medicare's clinician data lists 1 practice location in Los Gatos, CA. Call before your visit to confirm the address.
- What is Robert J. Marx's specialty?
- Medicare lists General Practice as the primary specialty.
- Does Robert J. Marx accept Medicare assignment?
- Yes. Medicare's clinician data says Robert J. Marx accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Robert J. Marx offer telehealth?
- Medicare's clinician data says Robert J. Marx offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Robert J. Marx?
- (408) 358-3511, as listed in official Medicare / NPI Registry data.
- What is Robert J. Marx's NPI number?
- 1073576351. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Robert J. Marx works
Medicare's Facility Affiliation Data lists Robert J. Marx at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- El Camino HealthMountain View, CA · Acute Care Hospital · CCN 050308
- Good Samaritan HospitalSan Jose, CA · Acute Care Hospital · CCN 050380
Practice locations
Addresses where Robert J. Marx is enrolled with Medicare (CMS data updated 2026-10-02).
- 14911 National AveLos Gatos, CA 95032 (408) 358‑3511
Specialties
- General Practiceprimary
Other general practitioners in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Johns Hopkins University School Of Medicine |
| Graduation year | 1975 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1073576351 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians